OAJ MaterialsOAJ Materials andand DevicesDevices CONFERENCE VOLUMECONFERENCE VOLUME Communications presented at TRAMP19 Communications presented at TRAMP19 (Marrakech, Morocco, november 2019)(Marrakech, Morocco, november 2019) Guest editors Daoud Mezzane, Mohammed Guest editors Daoud Mezzane, Mohammed Gouné, Khalid HoummadaGouné, Khalid Hoummada Published by Collaborating Published by Collaborating AcademicsAcademics http://co-ac.comhttp://co-ac.com Materials and Devices, Vol.4, No2 (2019) pp 2912-1 – 2912-99 ISSN 2495-3911 DOI: 10.23647/ca.md20192912 An international research journalAn international research journal http://materialsanddevices.co-ac.com ISSN 2495-3911 General informations The OAJ Materials and Devices is a journal created at the end oy 2016, devoted to all aspects of materials and related devices. It is Open Access and free of charges for authors. Our aim was to create a high quality journal, with a strict peer-review process, and complying with the transparency rules edicted by the DOAJ, COPE,... Materials and Devices publishes several types of articles : - A : regular papers, that should present the results of original research, not published or submitted somewhere else. - L : short papers, presenting original results, written as letters, focusing on one or few particular aspects, representing a very significant progress, for rapid publication. - R : review papers, that presents a summary of results published in literature, on fields covered by the journal. - T : technical papers, on the development of laboratory techniques and aparatus relevant to studies on materials and related devices. Such papers will present the details of a given technique, and an example of application in real condition, they may also take the form of overviews or reviews. In one of these last cases, the word «  review » or « overview » will appear explicitly in the title of the article. - Ur   : Unexpected and «   negative   » results , the journal accepts papers describing unexpected results, or results considered as negative, provided that the original ground arguments are sound, and that a reasonable interpretation can be proposed. Typical examples are : a synthesis process that is generally successful, which aborts in given cases, or give different unexpected but interesting results, results contradicting a theory or a model, etc. The idea to publish such papers is mainly to save time to the scientific community by giving information that is generally not available, except as private communications between researchers. - Opinion articles, the journal accepts submissions of this type of papers in which authors express, expose, and motivate their opinion, suggestions, proposals, analyzes, on general, philosophical, political aspects, policies related to researches on Materials and on Devices, on all subjects from the production of the scientific results, to the publication and use of those results. See details in the journal’s site. - Comments: short articles allowing to discuss specific points of an article that preferentially has been published in the OAJ Materials and Devices, and that is of particular importance for the readership of the journal. They should not attack the article, but provide a scientific, objective view or commentary, or complementary informations in a respectuous style. - Conf: conference papers : OAJ Materials and Devices may also publish conference proceedings and conference papers in special volumes. Organizers of conference interested should contact the journal in advance to know details. (Updated on june, 21st, 2019) Aims and scope of the journal The topics covered by the journal are wide, it aims at publishing papers on : - all aspects related to materials, namely according to their chemical formula (oxides, fluorides, carbon compounds, …, organic, inorganic), to their physical properties (conductors, super-conductors, semi-conductors, insulators, dielectrics,...), to their nature (crystalline or amorphous materials, liquid crystals, modulated systems, aperiodic materials, nanomaterials and nanostructured materials)… or environmental type (ecomaterials), or according to some specific applications. Papers on biomaterials, geomaterials, archeomaterials or on studies of ancient materials are also welcome. A particular attention is also paid on environmental studies related with materials. Authors are also encouraged to submit papers on theoretical studies applied to materials, including pure mathematical approaches, physical approaches, models, numerical simulations, etc. OAJ Materials and Devices - I http://materialsanddevices.co-ac.com/ - devices in a wide sense. Concerning Devices, the scope is restricted to those integrating given materials (for instance memories based on some specific magnetic materials) or those related to materials in their study or use (for instance specific instruments in materials science, devices of interest for the use of particular materials,...) . Papers on all types of such devices are welcome. Policy of the journal Materials and Devices is an Open Access (*) journal which publishes original, and peer-reviewed papers accessible only via internet, freely for all. Your published article can be freely downloaded, and self archiving of your paper is allowed! We apply « the principles of transparency and best practice in scholarly publishing » as defined by the Committee on Publication Ethics (COPE), the Directory of Open Access Journals (DOAJ), and the Open Access Scholarly Publishers Organization (OASPA). The journal is now indexed by the DOAJ and listed by this organization. Evaluation – peer-reviewing : After reception, the paper is sent to reviewers for evaluation. In case of negative or divergent opinions of reviewers, the editor-in-chief sends the paper to another reviewer and then gives a final decision based on all reports. Reviewers are asked to reply within three weeks to warranty a fast publication process. Copyright on any article in the OAJ Materials and Devices is retained by the author(s) under the Creative Commons (Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)), which is favourable to authors. (*) An open access journal means that all content is freely available without charge to the user or his/her institution. Users are allowed to read, download, copy, distribute, print, search, or link to the full texts of the articles in this journal without asking prior permission from the publisher or the author. This is in accordance with the BOAI definition of open access. International editorial board – list of members Orientation of the journal, choice of reviewers, special issues, editorial policy, etc, are discussed by the international editorial board. Algeria Mokhtar BOUDISSA, Professor Researcher, Dpt EBT, ENMC Laboratory, Faculté de Technologie, Université F. Abbas SETIF-1, Sétif  19000 - boudi44 @ yahoo.fr Brazil Paulo T.C. FREIRE, Full professor, Universidade Federal do Ceará, Fortaleza - tarso @ fisica.ufc.br José DE LOS SANTOS GUERRA, Professor, Instituto de Física, Universidade Federal de Uberlandia (UFU), Uberlandia – jsantosguerra @ gmail.com Burkina faso Dieudonné Joseph BATHIEBO, Full professor, University of Ouagadougou – djbathiebo@gmail.com Canada Zuo-Guang YE, Professor, Simon Fraser University, Burnaby, BC - zye@sfu.ca Cuba Aimé PELÁIZ BARRANCO, Full professor, Physics Faculty, Havana University - pelaiz@fisica.uh.cu Maria SÁNCHEZ, Full professor, Faculty of Physics, University of Havana – maruchy @ fisica.uh.cu Elena VIGIL, Full professor, Physics Fac. - Materials Sc. & Tech. Inst. (IMRE), University of La Habana, and Solar Energy Cathedra Chairperson, Cubasolar-U.H. - evigil @ fisica.uh.cu Czech Republic Ivan GREGORA, Institute of Physics, Czech Academy of Science, Prague - gregora@fzu.cz Vacláv JANOVEC, emeritus professor, Prague Denmark Heloisa BORDALLO, Associate Professor, Niels Bohr Institute - University of Copenhagen France Patrice BOURSON, Professor, LMOPS Université de Lorraine - Centralesupelec 2 rue E. Belin 57070 Metz - patrice.bourson@univ-lorraine.fr OAJ Materials and Devices - II mailto:patrice.bourson@univ-lorraine.fr mailto:gregora@fzu.cz mailto:evigil@fisica.uh.cu mailto:maruchy@fisica.uh.cu mailto:pelaiz@fisica.uh.cu mailto:zye@sfu.ca mailto:djbathiebo@gmail.com mailto:jsantosguerra@gmail.com mailto:tarso@fisica.ufc.br mailto:boudi44@yahoo.fr Alain CLAVERIE, Research Director, CEMES/CNRS Toulouse, and private consultant to several companies (microelectronics, areospace) - claverie@cemes.fr Pierre SAINT-GRÉGOIRE, Dr Hab, president of Collaborating Academics, https://fr.linkedin.com/in/saint-gregoire-pierre-5bb6372b, pstgregoire@gmail.com Philippe SCIAU, Senior Scientist, CEMES-CNRS, 29 rue J. marvig, 31055 Toulouse philippe.sciau@cemes.fr Georges ZISSIS, Professor, Université Toulouse 3 - Paul Sabatier; Laboratoire LAPLACE UMR 5213, Toulouse - georges.zissis@laplace.univ-tlse.fr Germany Lukas M. ENG, TU Dresden, Institute of Applied Physics, and also, Center for Advancing Electronics Dresden - lukas.eng@tu-dresden.de India Amit DAS, doctor, Solid state physics division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085 SM YUSUF, Head, Magnetism Section, and Professor at Homi Bhabha National Institute, Solid state physics division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085 Israël Gil ROSENMAN, The Henry and Dinah Krongold Chair of Microelectronics, School of Electrical Engineering-Physical Electronics, Faculty of Engineering, Tel Aviv University, Ramat Aviv - gilr@eng.tau.ac.il Kazakhstan Koblandy TURDYBEKOV, Head of the Department of Physics, Karaganda State Technical University, Karaganda - xray-phyto@yandex.kz Mexico A. Guillermo CASTELLANOS-GUZMÁN, Professor-Researcher, DIP CUCEI Universidad de Guadalajara, Guadalajara Jal. - gcastel@cucea.udg.mx Moldova Anatolie SIDORENKO, Director, Institute of Electronic Engineering and Nanotechnologies "D.GHITU" ASM – anatoli.sidorenko@nano.asm.md, anatoli.sidorenko@kit.edu Morocco Abdelhai RAHMANI, Professor, Physics Department, Faculty of Sciences, Meknes rahmani614@gmail.com / a.rahmani@flsh.umi.ac.ma People Republic of China Yang GAN, Professor, Department head, Harbin Institute of Technology, Harbin - ygan@hit.edu.cn Qinghui JIANG, Assoc Professor, State Key Laboratory of Material Processing and Die & Mould Technology, and School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074 - qhjiang@hust.edu.cn Zhifu LIU, Professor, CAS Key Lab of Inorganic Functional Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences - liuzf@mail.sic.ac.cn Xiaoyong WEI, Professor, Electronic Materials Research Laboratory (EMRL) Xi’an Jiaotong University, Xi’an 710049 - wdy@mail.xjtu.edu.cn Poland Maria ZAPART, Institute of Physics, Faculty of Production Engineering and Materials Technology, Czestochowa University of Technology -  zapart@wip.pcz.pl Russian Federation Boris DARINSKII, Professor, Voronezh State University, University sq.1, Voronezh 394006 - darinskii@mail.ru Alexander SIDORKIN, Professor, Voronezh State University, University sq.1, Voronezh 394006 - sidorkin@phys.vsu.ru Alexander SIGOV, Professor, Head of Condensed Matter Physics Chair, President of the University, Moscow Technological University, Moscow - sigov@mirea.ru Mikhail SMIRNOV, Professor, Physical Department, St. Petersburg State University - smirnomb@rambler.ru OAJ Materials and Devices - III mailto:smirnomb@rambler.ru mailto:sigov@mirea.ru mailto:sidorkin@phys.vsu.ru mailto:darinskii@mail.ru mailto:zapart@wip.pcz.pl mailto:wdy@mail.xjtu.edu.cn mailto:liuzf@mail.sic.ac.cn mailto:qhjiang@hust.edu.cn mailto:ygan@hit.edu.cn mailto:a.rahmani@flsh.umi.ac.ma mailto:rahmani614@gmail.com mailto:anatoli.sidorenko@kit.edu mailto:anatoli.sidorenko@nano.asm.md mailto:gcastel@cucea.udg.mx mailto:xray-phyto@yandex.kz mailto:gilr@eng.tau.ac.il mailto:lukas.eng@tu-dresden.de mailto:georges.zissis@laplace.univ-tlse.fr mailto:philippe.sciau@cemes.fr mailto:pstgregoire@gmail.com https://fr.linkedin.com/in/saint-gregoire-pierre-5bb6372b mailto:claverie@cemes.fr Alexander VTYURIN, deputy director, head of Raman spectroscopy group, Kirensky Institute of Physics, Krasnoyarsk - vtyurin@iph.krasn.ru Senegal Issakha YOUM, Professor, Department of Physics, FST, University Cheikh Anta DIOP de Dakar, Dakar-Fann Singapore Pooi See LEE, Professor, Nanyang Technological University, Singapore, pslee@ntu.edu.sg South Africa Malik MAAZA, Chair, UNESCO UNISA Africa Chair in Nanosciences, College of Graduate Studies, UNISA, Pretoria, & NANOAFNET, iThemba LABS, National Research Foundation of South Africa, Faure, Western Cape - Maaza@tlabs.ac.za , Maazam@unisa.ac.za Spain Carmen ARAGÓ, Full Professor, Dpt. Física de Materiales, Universidad Autónoma de Madrid carmen.arago@uam.es Paloma FERNÁNDEZ, Full professor, Department Materials Physics, Fac. of Physics, University Complutense, Madrid - arana@fis.ucm.es Emilio J. JUAREZ-PEREZ, Senior Researcher, ARAID Foundation, INA - Institute of Nanoscience of Aragon, ICMA - Aragon Materials Science Institute, Zaragoza University. Campus Río Ebro. Edificio I+D. C/ Mariano Esquillor, s/n, 50018 -Zaragoza - ejjuarezperez@unizar.es, http://araid.es/es/users/ejjuarez Javier PIQUERAS, Professor, Universidad Complutense de Madrid Togo Kossi NAPO, Professor, UNESCO Chair on Renewable energies, Faculty of Sciences, University of Lomé -  silnapo@yahoo.fr Tunisia Hamadi KHEMAKHEM, Professor, Faculty of Sciences of Sfax, Sfax hamadi.khemakhem@fss.usf.tn Ukraine Yulian VYSOCHANSKII, Professor, Uzhgorod National University, Uzhgorod - vysochanskii@gmail.com United Kingdom James F. SCOTT, Depts. of Chemistry and Physics, St. Andrews University, St. Andrews, Fife, UK KY16 9ST - Jfs4@st- andrews.ac.uk: USA Michael D. HAMPTON, Professor, Department of Chemistry, University of Central Florida, Orlando, FL  32816 Alexei GRUVERMAN, Professor of Physics, University of Nebraska-Lincoln - agruverman2@unl.edu Anirudha V. SUMANT, Ph.D., Materials Scientist, Center for Nanoscale Materials, Argonne National Laboratory, 9700 S. Cass Ave., Building 440, Room A-127, Argonne, IL 60439 - sumant@anl.gov , LinkedIn Profile: http://www.linkedin.com/in/anisumant Editor-in-Chief   : Pierre SAINT-GRÉGOIRE (France) – pstgregoire@gmail.com - - - People interested in this project are welcome ! Contact us to submit your proposals, ideas, suggestions, or to get involved in some actions ! Materials and Devices (ISSN 2495-3911) is a relatively new journal, and as such, is not yet indexed. However in future we shall consider as a priority task, to reach a significant impact factor for this journal. OAJ Materials and Devices - IV mailto:hamadi.khemakhem@fss.usf.tn mailto:silnapo@yahoo.fr http://www.linkedin.com/in/anisumant mailto:sumant@anl.gov mailto:agruverman2@unl.edu mailto:Jfs4@st-andrews.ac.uk mailto:Jfs4@st-andrews.ac.uk mailto:vysochanskii@gmail.com http://araid.es/es/users/ejjuarez mailto:ejjuarezperez@unizar.es mailto:arana@fis.ucm.es mailto:carmen.arago@uam.es mailto:ac.za/Maazam@unisa.ac.za mailto:Maaza@tlabs.ac.za mailto:pslee@ntu.edu.sg mailto:vtyurin@iph.krasn.ru ABSTRACTS BOOK Cadi Ayyad University, Faculty of Sciences and Technologies Marrakech 7-9 November 2019 Marrakech, Morocco Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p2 The third International Symposium TRAMP19 follows the previous successful events, TRAMP14, and TRAMP17 and was held in the warm and hospital city Marrakech in Morocco, on 7-9 November 2019. The Symposium was dedicated to the different aspects of the Materials Science and especially to advanced materials and their applications in energy, transport, medical and biological sectors. It has been a great opportunity for the junior and experienced scientists to share their knowledge on these hot subjects. TRAMP ‘s objectives and topics of interest: Bring together a broad international community of scientists, engineers and PhD students. Provide opportunities to strengthen existing collaborations and exchange of ideas to bring new partnerships. Create a forum for researches and experts regarding to Nanomaterials, train students and young researchers. Synthesis, Characterizations and Properties of nanomaterials. Characterizations and Properties of Surfaces and Interfaces. Functional and Nanostructured materials. Nanostructured Thin Films. Metallurgy, Metal alloys and Corrosion. Synthesis and Applications of Nanocomposites. Nanomaterials for Energy and environment Applications. Nanomaterials Applications for Electronics, Medicine and Biotechnologies. Scanning Probe Techniques. https://sites.google.com/site/tramp2019marrakech/ Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p3 Organizing institutions • Laboratory of Condensed Matter and Nanostructures, University Cadi Ayyad, Morocco • University Mohammed V, Rabat, Morocco (CNRST Priority Program PPR 15/2015) • Institute of Condensed Matter Chemistry of Bordeaux (ICMCB), France • Institute Microelectronic Materials and Nanosciences of Provence, Aix Marseille University, Marseille, France • European Research and Innovation Network “Engineering of Nanostructures with Giant Magneto-Piezoelectric and Multicaloric Functionalities” HORIZON-RISE-ENGIMA. Organizers • Mohamed GOUNE, ICMCB, Bordeaux, France • Khalid HOUMMADA,IM2NP, Aix Marseille University, Marseille, France • Hamadi KHEMAKHEM, LaMMA, Faculty Of Sciences, Sfax, Tunisia • Daoud MEZZANE, LMCN, University of Cadi Ayyad, Marrakech, Morocco Organising Committee • University of Cadi Ayyad, Marrakech, Morocco Abdelhadi ALIMOUSSA, Samira AMHIL, M’barek AMJOUD, Said BENMOUMEN, Elhassan CHOUKRI, Lhouceine HAJJI, Zouhair HANANI, Abderahim IHYADN, Said KHARDAZI, Soukaina MERSMLIZ, Daoud MEZZANE, Hanane MEZZOURH, Aziz NEQALI, Hajar ZAITOUNI • University Mohammed V, Rabat, Morocco Abdallah EL KENZ, Hassan EL MOUSSAOUI, El Mehdi SALMANI • IM2NP, Aix Marseille University, Marseille, France Yves KLEIN, Nouredine OUELDNA • ICMCB/CNRS, Bordeaux, France Sebastien FOURCAD https://sites.google.com/site/tramp2019marrakech/ Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p4 International Scientific Committee: • M’barek AMJOUD, University of Cadi Ayyad, Marrakech, Morocco • Mohamed Chérif BENOUDIA, National School Of Mines And Metallurgy, Annaba, Algeria • Ahmed CHITNALAH , University of Cadi Ayyad, Marrakech, Morocco • Abdelilah BENYOUSSEF , Hassan II Academy of Sciences and Technologies, Rabat, Morocco • Lahcen BIH, University Of Moulay Ismail, Meknès, Morocco • Sylvie BORDÈRE, I2M/CNRS, Bordeaux, France • Ahmed CHARAI, University Aix-Marseille, France • Youssef EL AMRAOUI, University Of Moulay Ismail, Meknès, Morocco • Mimoun EL MARSSI, University Of Picardie Jules Verne, Amiens, France • Lahcen ESSALEH, University Of Cadi Ayyad, Marrakech, Morocco • Hamid EZ-ZAHRAOUY, University Mohammed V, Rabat, Morocco • Abdeslem Fnidiki, GPM Université de Rouen, France • Yaovi GAGOU, University Of Picardie Jules Verne, Amiens, France • Stéphane GORSSE, ICMCB/CNRS, Bordeaux, France • Mohammed HAMDANI, University Ibno Zohr, Agadir, Morocco • Mohammed HAMEDOUN, University Mohammed V, Rabat, Morocco • Hamid KEDDAMI, University Of Cadi Ayyad, Marrakech, Morocco • Zdravko KUTNJAK, Jožef Stefan Institute, Ljubljana, Slovenia • Mohammed LAHCINI, University Of Cadi Ayyad, Marrakech, Morocco • Abdelilah LAHMAR, University Of Picardie Jules Verne, Amiens, France • Mohamed LOULIDI, University Mohammed V, Rabat, Morocco • Igor LUKYANCHUK, University Of Picardie Jules Verne, Amiens, France • Oksana MYKAYLO, Uzhgorod National University Ukraine • Abdelmoula NAJMEDDINE, Faculty Of Sciences, Sfax, Tunisia • Abdelhai RAHMANI , University Of Moulay Ismail, Meknès, Morocco • Mustapha RAIHANE, University Of Cadi Ayyad, Marrakech, Morocco • Benaissa RHOUTA, University Of Cadi Ayyad, Marrakech, Morocco • Slim ZGHAL, Faculty Of Sciences, Sfax, Tunisia https://sites.google.com/site/tramp2019marrakech/ Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p5 Sponsors of TRAMP19 symposium University of Bordeaux Cadi Ayyad University Aix-Marseille University Mohammed V University of Rabat Engima Project Laboratory of Condensed Matter and Nanostructures Faculty of Science and Techniques of Marrakech Institute of Condensed Matter Chemistry Bordeaux Institute for Materials, Microelectronic and Nanosciences of Provence National Center for Scientific Research National Center for Scientific and Technical Research Society of Development of Science and Novel Technologies https://sites.google.com/site/tramp2019marrakech/ Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p6 Plenary Speakers https://sites.google.com/site/tramp2019marrakech/ Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p7 PS001 MATERIALS SCIENCE OF NANOSTRUCTURES: UNDERSTANDING OF THE FUTURE A. V. Ragulya1,2* 1Institute for Problems of Materials Science, National Academy of Sciences of Ukraine, Krjijanovskogo 3, 03142 Kyiv, Ukraine 2 NANOTECHCENTER LLC, Krjijanovskogo 3, 03142 Kyiv, Ukraine E-mail*/ andrey.ragulya@gmail.com ABSTRACT The main feature of nanomaterials is the dependence of their properties on the size of the structural element. The main feature of nanotechnology is the ability to operate with nanomaterials that have a certain structure. Therefore, the diversity of structural forms increases every year by exponential low. The escalation of complexity and variety of nanostructures is an intensive way of nanotechnology development today, alternatively to the combinatorics with chemical composition, which gives extensive growth. Examples are known: nanotubes, fullerenes – all first time have been predicted and obtained from carbon only and then were composed from other elements or chemicals. The same happened with 2D materials: from graphene to graphene-like sulfides, selenides, maxenes, and others.New structural forms and new materials with extraordinary properties are ahead. The classical materials science is grounded on the study of relations between composition, structure and properties of materials, taking into account the processes of production and processing and production economics. In terms of physics and chemistry, we are accustomed to perceiving material through the prism of the energy of interatomic interaction. Classical materials science is first and foremost the science of bodies in which covalent chemical bonds with energy higher than 2 electron volts operate. In this coordinate system we consider the majority of material properties - strength and hardness, thermal conductivity and diffusion, ferroelectricity and luminescence. However, in nature, there are also low energy bonds, there are mechanisms providing self-assembly and self-organization of nanoparticles with the aid of weak bonds. For the convergence of the two segments of materials science it is necessary to develop new processes with feedback, which allow to create new structures, new methods of analysis of these structures, new methods of control of process parameters. Development of multiscale modeling and design of new structures and materials is required. For example, methods of operating 2D materials are required to connect them to complex devices. It is possible to mix the maxenes evenly as a powder in the polymer and to obtain a screen from microwave radiation. It is possible to construct an ordered layered structure, an electronic device, by ordering the nanoparticles in an external field. Keywords: strong chemical bonds, weak chemical bonds, complex nanostructures AKNOWLEDGEMENT: This work was supported in part by the Research Executive Agency (grant agreement 778072 — ENGIMA — H2020-MSCA-RISE-2017). https://sites.google.com/site/tramp2019marrakech/ mailto:andrey.ragulya@gmail.com Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p8 PS002 IS THE NANOPIEZOTRONICS BASED ON A PIEZOELECTRIC EFFECT? Franck DAHLEM* E-mail*/ franck.dahlem@cermav.cnrs.fr ABSTRACT The nanopiezotronics refers to the research field on the coupling between semiconducting and piezoelectric properties of nano-objets. It was for instance observed that the mechanical deformation of flexible structures based on ZnO or III-nitride nanowires generates electrical spikes [1] or modifies their I/V characteristic. The piezoelectricity was claimed as the origin of these electro-mechanical couplings which could result on a broad range of new applications from nano-generators to nano-sensors [2]. In this talk, the spontaneous and piezoelectric polarizations of III-nitride materials will be described and the local study of the surface potential and piezocharges will be presented in order to investigate the nanopiezotronic signal obtained via conductive scanning probe microscopy in III-N nanowires. The results emphasize the negligible role of the piezoelectric effect [3], especially via the questioning of the giant piezoelectricity which was claimed to be present in such nanowires [4]. Several scanning force microscopy techniques dedicated to the local probing of electro-behaviors like the Kelvin probe force microscopy (KPFM) or the piezoresponse force microscopy (PFM) will be introduced during the presentation with a special care concerning their applications to semiconductors and related artifacts. REFERENCES [1] Z.L. Wang , J.H. Song , Science 312 , 242 (2006) [2] Z.L. Wang , MRS bulletin vol. 37 (2012) [3] L. Jaloustre, S. Le-Denmat, T. Auzelle, M. Azadmand, L. Geelhaar, F. Dahlem, R. Songmuang, ArXiv. (2019) [4] M. Minary-Jolandan, R. A. Bernal, and H. D. Espinosa, MRS Communications 1, 45 (2011) https://sites.google.com/site/tramp2019marrakech/ mailto:franck.dahlem@cermav.cnrs.fr Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p9 PS003 THE RELATIONSHIP BETWEEN THE ENERGETIC PERFORMANCE OF RECHARGEABLE BATTERIES AND THE PROPERTIES OF THEIR ELECTRODE MATERIALS Ismael SAADOUNE1* 1Cadi Ayyad University, Marrakech Email*/ i.saadoune@uca.ma ABSTRACT The depletion of fossil fuels and their drastic effects on the environment are becoming problematic. Hence, researchers were encouraged to use the clean renewable energies and to smoothly transit from thermal to electrical vehicles. Nevertheless, these two energetic applications require efficient energy storage technologies to fit with their impressive recent development. Owing to its high-energy density, long life cycling, lightweight and recyclability, lithium-ion batteries (LIBs) are widely used for portable electric devices along with electric vehicles (EVs). Sodium ion batteries (Na-ion) are also predicted to be promising low cost alternatives of the current lithium technology especially in large-scale applications. The concept of Li-ion and Na-ion consists of the reversible exchange of the alkali metal between the anode and the cathode materials, that constitute the main component of these two technologies. The energetic performances of the Li- and Na-ion (Capacity, Voltage, Energy, Cycling…) strongly depend on the structure and the physico-chemical performance of the electrode materials. Through some recent investigations done in LCME Laboratory (UCA), this keynote will present a series of example elucidating the dependence of the storage performance of Li- and Na-ion batteries on the features of the electrodes. Keywords: Energy Storage, Li-ion batteries, Na-ion batteries, Electrode Materials. Acknowledgements: The author would like to thank OCP, IRESEN and CNRST for their financial support. https://sites.google.com/site/tramp2019marrakech/ mailto:i.saadoune@uca.ma Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p10 PS004 ENTROPIC DESCRIPTION OF A Mg-BASED METALLIC GLASS FROM SERRATIONS STATISTICS Yannick Champion1* 1Univ. Grenoble Alpes, CNRS, SIMaP, 38000 Grenoble, France E-mail*/ yannick.champion@simap.grenoble-inp.fr ABSTRACT Series of independent instrumented nano-indentation experiments were performed on a Mg65Cu12.5Ni12.5(Ce75La25)10 metallic glass at room temperature and at strain rates in the range of 1 to 0.3 s-1. The loading part of curves shows serrations which size and frequency of occurrence were measured using an automated procedure. It was conjectured, that (i) serration occurs through rearrangement of appropriate zone in the glass that should naturally scale with a multiple of an elementary domain size characterizing the deformation mechanism. (ii) As activated zones leading to serration are very few, the process should fit with rare event dynamics. Actually, serration sizes are well fitted by a Poisson distribution and the waiting times between successive serrations is consistent with the Poisson statistics. The model predicts an elementary domain which size scales with that of the activation volume of about 3 atoms, measured from nano-indentation near-creep tests at constant load in the same series of experiments (Thurieau et al, J. Appl. Phys. 2015). Dynamics of shear bands initiation, which is seemingly of avalanche type, is analyzed using the statistical approach proposed by Adam and Gibbs (J. Chem. Phys. 1965) to describe viscosity. An entropic description is proposed where elementary domains are associated to energy levels and able to cooperatively evolve to form avalanches (serrations). https://sites.google.com/site/tramp2019marrakech/ mailto:yannick.champion@simap.grenoble-inp.fr Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p11 PS005 FERROELECTRIC TOPOLOGICAL NANOMATERIALS FOR ULTRAFAST COMPUTING CIRCUITS WITH LOW ENERGY DISSIPATION Luk’yanchuk*,a, Yu. Tikhonovb, A. Sénea, A. Razumnayab, V. Vinokourc a University of Picardie, France, b Southern Federal University, Russia, c Argonne National Laboratory, USA Email*/ lukyanc@ferroix.net ABSTRACT Formation of unusual textures of polarization is imminent for nano-scale ferroelectric samples, films, rods, and granules, where the depolarization surface effects play a crucial role. The topologically protected stability of such textures and security of information storage is coming from polarization vorticity, provided by the condition of absence of the energetically-unfavorable depolarization charge. The endurance of ferroelectric formations with respect to high-energy irradiation makes them ideal for the aerospace industry, and the periodic domain walls structures can be used as a platform for terahertz radiation, generators and detection devices. Polarization domains that alternate the surface charge distribution can be formed in ferroelectric thin films as an effective mechanism to confine the depolarization field to the near-surface layer and diminish the depolarization energy. However, their existence has long been considered as barely possible until the direct theoretical predictions [1,2] and experimental evidence [3,4] in thin oxide-based superlattices. Very recently we have demonstrated that the effective capacitance of ferroelectric layers with domains is negative [5,6]. This effect is explained by the opposite orientation of the depolarizing field with respect to the field-induced averaged polarization. This phenomenon is currently considered as the platform for the realization of the dissipation-free high-performance nano-circuits [7]. Moreover, in the sub-THz region, the resonance plasmonic effect can be induced by oscillating domain walls [8] and can be suitable for the design of the ultra -small low- energy THz chips. Multi-vortex [9] and skyrmion [10] states can be formed inside ferroelectric cylindrical nano-dots and nanorods to reduce the depolarization energy. We study the topological stability of such states and target the multi-domain and topological excitations in FE nanodots as a platform for IT-secured multivalued logic units, breaking ground for neuromorphic computing [11,12]. REFERENCES [1] A. M. Bratkovsky and A. P. Levanyuk, Phys. Rev. Lett. 84, 3177 (2000). [2] I. A. Luk'yanchuk, et al. Phys. Rev. Lett., 94, 047601 (2005), ibid. 102, 147601 (2009) [3] S. K. Streiffer, J. A. Eastman, D. D. Fong et al., Phys. Rev. Lett. 89, 067601 (2002); [4] S. O. Hruszkewycz, M. J. Highland, et al., Phys. Rev. Lett.110, 177601 (2013). [5] P. Zubko, …, A. Sené, I. Luk’yanchuk, J.-M. Triscone & J. Íñiguez, Nature, 534, 524 (2016) [6] I. Luk’yanchuk, et al. (Nature) Communications Physics 2, 22 (2019) [7] J. Íñiguez, P. Zubko, I. Luk’yanchuk, & A. Cano, Nature Reviews Materials, 4, 243 (2019) [8] I. Luk'yanchuk, A Sené, V. Vinokour, Phys. Rev. B 98, 024107 (2018) [9] G. Pascoli L. Lahoche, I. Luk'yanchuk, Integrated Ferroelectrics, 99, 60 (2008) [10] L Baudry, A Sené, IA Luk'yanchuk, L Lahoche, and JF Scott, Phys. Rev. B 90, 024102 (2014) [11] P.-W. Martelli, S. M. Mefire, I. Luk'yanchuk, Europhys. Lett. 111, 50001 (2015) [12] Baudry, L., Lukyanchuk, I. & Vinokur, V. M. Sci. Rep. 7: 42196 (2017) [13] Keywords: ferroelectrics, THz radiation, nanoelectronics, multibit logic, negative capacitance https://sites.google.com/site/tramp2019marrakech/ mailto:lukyanc@ferroix.net Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p12 PS006 3D IMAGING OF MATERIALS CHEMISTRY AT THE ATOMIC-SCALE BY ATOM PROBE TOMOGRAPHY F. Danoix, M. Gouné*, K. Hoummada**, R. Danoix, F. Vurpillot, D. Blavette GPM – UMR CNRS 6634 – Normandie Université – France * ICMCB - UPR CNRS 9048 - Bordeaux – France ** IM2NP, CNRS, Aix Marseille Université (France) E-mail*/ frederic.danoix@univ-rouen.fr ABSTRACT The technique of atom probe tomography (APT) enables atomic level microstructural characterization to be performed on a wide range of materials, from laboratory model to complex engineering alloys, to thin multilayer films, semiconducting structures and devices, and, since recently, to ceramic materials. The intrinsic performances of recent instruments will be presented, and well as their unique outcomes. Information on the size, morphology and compositions of coexisting phases, solute partitioning of the elements between the phases, and solute segregation to defects, like dislocation lines, interfaces and grain boundaries can be obtained down to the atomic scale. These informations lead to a more complete understanding of fundamental and service properties of complex engineering materials. The types of atomic level information that may be obtained with atom probe tomography are illustrated in a large variety of materials. https://sites.google.com/site/tramp2019marrakech/ mailto:frederic.danoix@univ-rouen.fr Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p13 PS007 Toward material engineering and applications Mustapha Jouiad* E mail*/ mustapha.jouiad@u-picardie.fr ABSTRACT The inherent increasing demand in energy solutions and new technologies in various sectors such as transport and environment has prompted scientists to custom the materials design and properties for targeted application. Most of the newly developed materials are complex composites with more and more reduced size and dimensions. Special fabrication techniques have then emerged to make the processing possible and easily tunable. Among these techniques and the list is not exhaustive: Atomic Layer Deposition, Plasma Enhanced Chemical Vapor Deposition, Electron Beam & Thermal evaporators, Magnetron Sputtering, Electron beam and Photo lithography have attracted increasing interest due to their volatility and reproducibility. In parallel and to accommodate this progress made in nanomaterials, advanced characterization techniques such as High-Resolution Scanning Transmission Electron Microscopy (HRSTEM), Electron Energy Loss Spectroscopy (EELS), Scanning Near-field Optical Microscopy (SNOM), In situ experiments (TEM+AFM+SEM) and 3D imaging, appear as major tools to first evaluate the processing routes and parameters, then to correlate the fabricated materials to their targeted application. This duality, which consists of closing the loop between these two aspects fabrication and characterization in one hand and the material testing in the other hand, is a must to achieve cutting edge research and breakthrough. Ultimately, this approach will allow better prediction of the material design for the desired application. In addition, as this approach lies in cross disciplines, it gives to scientists leverage to overcome the multidisciplinary aspect related to nanotechnology. In this seminar, this approach will be applied to novel materials with special emphasis to the potential applications in energy harvesting & conversion, sensing, biology, and communications. These applications can find use in different domains such as space, transport and energy saving. https://sites.google.com/site/tramp2019marrakech/ mailto:mustapha.jouiad@u-picardie.fr Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p14 PS008 SOFT CALORIC LIQUID CRYSTAL-BASED MATERIALS Brigita R.,1,* Gregor S.,2 Boštjan Z.,1 Samo K.,1,3 Zdravko K.1 1 Jožef Stefan Institute, Ljubljana, Slovenia 2 Faculty of Mathematics and Physics, University of Ljubljana, Ljubljana, Slovenia 3 Faculty Natural Sciences and Mathematics, University of Maribor, Maribor, Slovenia Email*/ brigita.rozic@ijs.si ABSTRACT Caloric effects are manifested in the heating or cooling a caloric material due to the application or removal, respectively, of the external field under nearly adiabatic conditions. Materials with large caloric effects, such as the electrocaloric (EC) and elastocaloric (eC) effects, have the promise of realizing new solid state refrigeration techniques [1, 2]. First proof of such conceptual cooling devices was produced from relaxor ferroelectric ceramic and polymer thin films [3, 4], but with rather low power density, due to the relatively large EC inactive regenerator mass [5]. The natural idea is to replace such regenerator with the EC active dielectric fluid, such as liquid crystals (LCs), which may improve the power density of EC cooling devices. Another soft material, called liquid crystal elastomers (LCEs), are good candidates with large elastocaloric effect with potentially better elastocaloric responsivity than shape memory alloys wires, in which the eC temperature change of 40 °C was observed at 0.8 GPa stress field [6]. In this contribution a review of recent direct measurements of the large EC effect in LCs and large eC effect in LCEs [7, 8] will be given. In smectic liquid crystalline materials and mixtures of LCs with functionalized nanoparticles the EC effect exceeding 8 K was found in the vicinity of the isotropic to smectic A phase transition. Direct EC measurements indicate that the EC response is significantly enhanced by the latent heat [9]. Further, the results of direct measurements of the eC in side-chain and main-chain (MC) LCEs will be presented. The eC change of temperature of about 1 K was observed in MCLCEs. However, both soft materials can play a significant role as active cooling elements and parts of thermal diodes or regeneration material in development of new cooling devices. REFERENCES [1] Z. Kutnjak et al., Wiley Encyclopedia of Electrical and Electronics Engineering, p. 1-19 (2015). [2] X. Moya et al., Nature Mater. 13, 439 (2014). [3] S.-G. Lu et al., Appl. Phys. Lett. 97, 162904 (2010). [4] B. Rožič et al., J. Appl. Phys. 110, 064118 (2011). [5] U. Plaznik et al., Appl. Phys. Lett. 106, 043903 (2015). [6] E. A. Pieczyska et al., Exp. Mech. 46, 531 (2006). [7] I. Lelidis and G. Durand, Phys. Rev. Lett. 76, 1868 (1996). [8] X.-S. Qian et al., Adv. Funct. Mater. 23, 2894 (2013). [9] E. Klemenčič et al., Scientific reports. 9, 1171 (2019). Keywords: electrocaloric, elastocaloric, liquid crystal, liquid crystal elastomers https://sites.google.com/site/tramp2019marrakech/ mailto:brigita.rozic@ijs.si Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p15 Invited Speakers https://sites.google.com/site/tramp2019marrakech/ Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p16 IS001 NANOCRYSTALLINE MULTIFUNCTIONAL Pr-Co COMPOUNDS: PERMANENT MAGNETS, MAGNETIC REFRIGERATION AND HYDROGEN STORAGE Fersi Ra. Bouzidia,b W., Patout Lc., Charaï A. c Bessais L. b and Thabet-Mliki N. a* a Université de Tunis El Manar, LMOP LR99ES17 Faculté des Sciences de Tunis, b Université Paris Est, ICMPE (UMR 7182), CNRS, UPEC, F- 94320 THIAIS France c Aix-Marseille Université – CNRS, IM2NP, Faculté des Sciences de Jérôme, F-13397 Marseille, France E Mail*/ najeh.mliki@fst.utm.tn ABSTRACT Rare-earth transition metal intermetallics RMn, where a rare earth (R) is combined with a transition metal (M), are attractive compounds for their technological magnetic application. Of all them, only the R-3d intermetallics ever exhibit a significant magnetic moment on the M partner. This group is the subject of this work. After presenting the relevant theoretical models for magnetism in R-3d intermetallics the crystallographic relations between the stoichiometry are discussed. Following a detailed treatment, the overall magnetic properties are summarized. The characteristics of the intermetallic compound RMn are depending on the nature of the metals involved and the stoichiometry of the compound. We focus here in the Pr-Co binary system, it forms several intermetallic compound which have structural and magnetic properties enough different. These compounds can crystallize in hexagonal and rhombohedral structures depending on annealing temperature. The structures of PrCox compounds derived from the structure of the compound by replacing PrCo5 third of rare earth atoms by a pair of atoms of transition metal smaller. The crystal structure of Pr2Co7, as well as Pr5Co19 compounds, can be constructed by the substitution of Co atom by the rare earth atom in each mesh PrCo5, as well as the PrCo3 and PrCo2 compounds, by an ordered substitution of atoms. These compounds exhibit magnetic properties that can be exploited to produce soft, hard or semi-hard magnetic materials. The origin of these unique magnetic properties is mainly due to the coexistence of two complementary types of magnetism: magnetism characteristic of localized 4f electrons of the rare earths and itinerant magnetism of the 3d electrons of the transition metals. Moreover, we report that the insertion of a light element such as carbon or hydrogen, allows to increase the Curie temperature of these systems. The related hydrides present a reversible cycle of absorption/desorption. We also report on the study of the magnetocaloric effect (ME) of the intermetallic Pr-Co type. It shows that the ME effect is sensitive to the stack configuration. The temperature dependence of the magnetization (M vs. T) and the Arott plots around the second order magnetic transition for Pr5Co19 and Pr2Co7 compounds are reported. These results indicate that Pr-Co compounds could be good candidates for permanent magnets, but also for magnetic refrigeration at high temperature and for hydrogen storage. Keywords: nanomaterials, permanent magnets, magnetic refrigeration, hydrogen storage, energy. https://sites.google.com/site/tramp2019marrakech/ mailto:najeh.mliki@fst.utm.tn Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p17 IS002 LEAD-FREE AND ANTIFERROELECTRIC MATERIALS AS ELECTROCALORIC COOLANTS B. Rožič,1 B. Asbani,2 M. El Marssi,2 H. Uršič,1 J. Koruza3, B. Malič,1 R. Pirc,1 D. Mezzane,4 Z. Kutnjak,1* 1Jožef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia 2LPMC, University of Picardie Jules Verne, 33 rue Saint-Leu, Amiens, France 3Technical University Darmstadt, Alarich-Weiss-Str. 2, Darmstadt, Germany 4LMCN, F.S.T.G. University Cadi Ayyad, BP 549, Marrakech, Morocconiversity/ Institute Email*/ zdravko.kutnjak@ijs.si ABSTRACT The request for greener heat-management technologies has recently developed significant interest in new electrocaloric (EC) effect-based cooling devices that have the potential to replace the existing cooling technics [1,2]. In this contribution the direct measurements of the large EC effect in antiferroelectric, lead- based and lead-free ferroelectric materials [3,4] will be presented. Specifically, the negative EC effect in antiferroelectric PZSTN, n/95/5 PLZT and PBZ ceramics will be investigated by direct experiments. Here, it is demonstrated that both negative and positive EC response can be arbitrarily invoked in antiferroelectric materials by properly controlling the electric field and temperature. In addition, the large positive EC response observed by direct experiments in lead-free BCTZ-based ferroelectric materials will be reviewed. A prototype of electrocaloric based cooling device using a regeneration technique will be presented, its properties reviewed and compared to existing caloric prototypes. REFERENCES: [1] Z. Kutnjak., B. Rožič, R. Pirc., Wiley Encyclopedia of Electrical and Electronics Engineering, p. 1-19 (2015). [2] A. S. Mischenko et al., Science 311, 1270 (2006). [3] R. Pirc, B. Rožič, J. Koruza, G. Cordoyiannis, B. Malič, Z. Kutnjak, J. Phys.: Condens. Matter 27, 455902 (2015). [4] B. Asbani, J.-L. Dellis, A. Lahmar, M. Courty, M. Amjoud, Y. Gagou, K. Djellab, D.Mezzane, Z. Kutnjak, M. El Marssi, Appl. Phys. Lett. 106, 042902 (2015). Keywords: antiferroelectric, ferroelectric, electrocaloric, dielectric, lead-free https://sites.google.com/site/tramp2019marrakech/ mailto:zdravko.kutnjak@ijs.si Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p18 IS003 CHARACTERIZING THE POROSITY IN THIN BST FILMS BY LASER- ACOUSTIC WAVES. Fouzia Tayaria,Wolfgang Donnerb and Anouar Njeha*. aLaboratoire de Physique des Matériaux, Faculté des Sciences de Sfax, Université de Sfax, Tunisia. bInstitute of Materials Science, University of Technology, Petersenstr.23, 64287 Darmstadt, Germany. E-mail*/ njehanouar@gnet.tn ABSTRACT Porosity may be harmful for the properties of thin films. Depositing dense films is often the aim of the technological development, although there are also applications requiring adjusting a special amount of pores in the film. In thin films, the pore dimension is in the sub-micrometer range so that detecting the pores is difficult. The laser-acoustic technique is shown to be able to indicate an enhanced porosity in thin films. It is based on surface acoustic waves and yields Young’s modulus of the film. The elastic modulus of the material is distinctly influenced by porosity. It reduces with increasing porosity and depends also on the shape of the pores. Test series of BST (Ba0.65Sr0.35TiO2) thin films with porosity were deposited on Pt/TiO2/SiO2/Si substrate. The laser-acoustic tests yielded elastic moduli for the films that were up to 24% lower compared to the value of the bulk material. The lowering of Young’s modulus was found to correlate with increasing porosity. For the manufactured BST series a pore volume fraction up to approximately 7% was estimated. A theory for Young’s modulus depending on porosity, also taking into account the pore shape, was employed to deduce information on the pore structure from the laser-acoustic results . Key words: BST thin films, texture, porosity, laser acoustic waves. https://sites.google.com/site/tramp2019marrakech/ mailto:njehanouar@gnet.tn Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p19 IS004 STRUCTURAL, DIELECTRIC AND ENERGY STORAGE PROPERTIES OF NEODYMIUM NIOBATE WITH TETRAGONAL TUNGSTEN BRONZE STRUCTURE Mahfoud BELARBI, Abdelilah LAHMAR1*, Yaovi GAGOU and Mimoun EL MARSSI 1University of Picardie Jules Verne/ Laboratory of Condensed Matter Physics E Mail*/ abdel.ilah.lahmar@u-picardie.fr /Phone:+33322827691 ABSTRACT The present work reports on the effects of Nd3+ substitution on the structural, dielectric and energy storage behaviour of polycrystalline Ba2NaNb10O30 (BNN) ceramics. The ferroelectric lead-free Ba2Na1-xNdX/3Nb5O15 ceramics were prepared by conventional solid-state reaction technique. The room temperature X-ray study and Raman investigations have allowed to evidence the stabilization of a tetragonal tungsten bronze structure with P4bm as space group for all studied compound. Dielectric study carried out on the prepared ceramics has permitted to determine the temperature of phase transitions (Tc). It was found that the dielectric constant increased with increasing the amount of Nd in BNN matrix. Room temperature energy storage property was determined using P-E hysteresis loops. The optimum discharge density was found for x= 0.7 with Wrec = 18,1 mJ.cm-3) at 1KHz. Keywords: Tetragonal Tungsten Bronze, Dielectric, Energy storage. https://sites.google.com/site/tramp2019marrakech/ mailto:abdel.ilah.lahmar@u-picardie.fr Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p20 IS005 BENEFIT OF PRESSURE IN THE SINTERING PROCESS Alain LARGETEAU1*, Myhtili PRAKASAM, Oudomsack VIRAPHONG 1CNRS, Univ. Bordeaux, Bordeaux INP, ICMCB, UMR 5026, F-33600 Pessac, France Email*/ largeteau@icmcb-bordeaux.cnrs.fr ABSTRACT Pour atteindre certains objectifs, la conception de procédés originaux de synthèse dans la gamme de pression (1 bar – 60 kbar (6 GPa)) a mené à l’obtention de matériaux impossibles à élaborer par tout autre procédé. Le service de synthèse Hautes Pressions (HP) étudie l’effet de P pour l’obtention de matériaux et la maitrise des transitions de phase. Ces matériaux peuvent être sous forme de monocristaux, micro/nano- cristallites, polycristaux (par frittage pour l’obtention de céramiques) et de monolithes (par densification et/ou consolidation de matériaux pulvérulents). Le procédé HP est maitrisé sous forme gaz, liquide et solide; le milieu fluide en condition hydrothermale (état souscritique ou supercritique) permet par le biais du phénomène de dissolution-précipitation, la croissance de monocristaux et le frittage de poudres (céramiques, métalliques). L’impact de la PRESSION au travers de ses principales caractéristiques (faible énergie mise en œuvre en comparaison avec la température (T), accroissement de la réactivité chimique, diminution du volume, force motrice) est étudié pour une grande variété de domaines d’applications : piézoélectricité, photonique, biomatériaux, outils d’usinage. Des exemples de l’intérêt de la RESSION seront donnés pour les exemples suivants: - Diminution de T de frittage / consolidation / densification, par son effet de Force motrice, afin de :  Limiter la croissance granulaire,  Favoriser la phase basse température : SiO2 quartz (transition - à 573°C),  Préserver la composition initiale du biomatériau (conservation d’éléments volatils: OH-, H2O, CO2),  Augmenter le domaine de stabilité thermique évitant la décomposition : BP [Tdecomp. = 1130°C]: Tfritt. = 1600°C/5 GPa, MgB2 [Tdecomp. = 830°C]: Tfritt. = 1200°C/5 GPa, - Orientation de la réaction chimique dans le sens de la synthèse conduisant à la phase la plus dense : diamant (c-C) au détriment du graphite (h-C), - Initiation d’une nouvelle microstructure plus fine par la maitrise des changements de phase (matériaux polymorphes) soit à l’état solide (Al2O3:  -> ) ou bien soit à l’état liquide par dissolution d’une phase et précipitation d’une autre phase (SiO2: amorphe -> cristallisé), - Frittage de matériaux réfractaires (borures, nitrures, carbures) pour atteindre une densité améliorée en comparaison avec les procédés à plus basse pression (c-SiC), - Frittage de phase stable qu’à haute pression (c-C, c-BN), - Densification de céramiques avec une porosité proche de 0% (céramiques transparentes) ou à forte porosité (biomimétisme structure osseuse) Divers procédés HP seront présentés pour la synthèse de matériaux / multimatériaux / composites sous forme dense (HP-HT, HP-SPS, HyS, HIP, ..) et poreux (HyS, FIP, HIP, CIP, UAP, ..), mais également pour l’obtention de matériaux sous forme de monocristaux (HyCG, HyS) et micro/nano-cristallites (HyCr), la purification de matériaux naturels (HyPu) et la décontamination athermique (sanitisation à froid: Pascalization) de biocomposites dont l’un des constituants est thermo-instable (HHP, HPP) https://sites.google.com/site/tramp2019marrakech/ mailto:largeteau@icmcb-bordeaux.cnrs.fr Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p21 IS006 THE ROLE OF MECHANICAL FIELDS AND STRESS RELAXATION ON AMORPHOUS/CRYSTALLINE TRANSITION OF NANOSCALE SILICON NITRIDE IN -Fe S.Bordère* E-mail*/ Sylvie.bordere@u-bordeaux.fr ABSTRACT The need to reduce the fuel consumption of vehicles, improve passenger safety and the new global standards for the CO2 emission force the automotive industry to rapidly develop new materials with higher mechanical properties and lower density. The attractive properties of nanoscales Si3N4 in terms of both density and strengthening make them excellent candidate for nitriding applications in the transportation industry. Upon nitriding of Fe-Si binary alloys at 570°C, a very large amount of Si3N4 forms in the -Fe matrix as an amorphous phase of size-dependent cuboidal morphology whose density is very low (1.8 g. cm-3). Upon denitriding at the same temperature, a transition from amorphous Si3N4 to crystalline Si3N4 was observed. This change in structure is associated with a change from the cube-like morphology to a hexagonal prism shape and an increase of density from 1.8 g. cm-3 to 3.6 g. cm-3. In this paper, the understanding of such an evolution was addressed through an approach based on numerical modelling that couples both stress field and the diffusion-controlled growth of nanoparticules of Si3N4. The role of the anisotropy of stress fields, the elastic strain energy stored in the material, the pressure jump at the interface between Si3N4/ -Fe and the stress relaxation phenomenon on the stability of both amorphous and crystalline nanoparticles were discussed. The results obtained open new avenues for developing new lighter materials for transportation. https://sites.google.com/site/tramp2019marrakech/ mailto:Sylvie.bordere@u-bordeaux.fr Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p22 IS007 DESIGN, MICROSTRUCTURES AND PROPERTIES OF HIGH ENTROPY ALLOYS AND COMPLEX CONCENTRATED ALLOYS S. Gorsse1*, F. Perouzet1,2, D. Hachet1,3, S. Godet3, C. Navone2, R. Banerjee4, O. Senkov5, D. Miracle5 1Univ. Bordeaux, CNRS, Bordeaux INP, ICMCB, France. 2LITEN, CEA, France. 3Université libre de Bruxelles, Belgium. 4University of North Texas, USA. 5Air Force Research Laboratory, USA. E-mail*/ sgorsse@gmail.fr ABSTRACT High entropy alloys (HEAs) and complex concentrated alloys (CCAs) based on 3d transition metals (3d TM CCAs) and refractory elements (RCCAs) are widely studied as candidates for structural and functional materials. 3d TM CCAs usually have FCC or duplex FCC+BCC microstructures, while RCCAs usually have BCC-based phases. In fact, many 3d TM CCAs and RCCAs have both disordered solid solution and long-range ordered phases, i.e. FCC+L12 and BCC+B2 respectively, giving the opportunity to produce precipitation-strengthened alloys. Besides, low stacking fault energy FCC HEAs/CCAs are susceptible to deformation twinning which imparts excellent strength-ductility combination by increasing strain hardenability. This talk steps back over the rapid development of HEAs/CCAs to discuss their principles and the new concepts they introduce, their microstructures and properties, their design strategies, and will develop ideas to guide future efforts. We will also explore different processing routes with the aim to evaluate the effects on the microstructure and tensile properties of 3d TM CCAs. https://sites.google.com/site/tramp2019marrakech/ mailto:sgorsse@gmail.fr Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p23 IS008 DISCOVERY OF A FeCoNiPdCu HIGH-ENTROPY ALLOY WITH EXCELLENT MAGNETIC SOFTNESS Wencka M1*. 1Institute of Molecular Physics, Polish Academy of Sciences ul. Smoluchowskiego 17, 60-179 Poznań, Poland Email*/ magdalena.wencka@ifmpan.poznan.pl ABSTRACT The author reports on the discovery of a magnetically soft high-entropy alloy of composition FeCoNiPdCu, which performs comparably to the best commercial soft magnets for static and low-frequency applications. Properly heat-treated FeCoNiPdCu develops nanostructure that can be viewed as a two-phase bulk nanocomposite of randomly intermixed FeCoNi magnetic domains and PdCu nonmagnetic “spacers”, both of 2–5 nm cross dimensions. Due to the nanometric size, the FeCoNi domains are magnetically single-domain particles, and since the particles are exchange-coupled across the boundaries, exchange averaging of magnetic anisotropy takes place, resulting in an almost vanishing coercive field and excellent magnetic softness. The formation of a two-phase nanostructure favorable for the exchange averaging of magnetic anisotropy is a consequence of specific values of the binary mixing enthalpies for the chosen elements. Though high-entropy alloys are generally considered to be random solid solutions of multiple elements on a topologically ordered crystal lattice, clustering of the atoms into preferential chemical environments on a nanoscale essentially determines their magnetic properties. Experimentally, the magnetic properties of the FeCoNiPdCu high- entropy alloy are compared to the commercial, magnetically soft non-oriented silicon electrical steel [1]. Keywords: high-entropy alloy, bulk nanocomposite, magnetism, magnetic softness REFERENCES [1] P. Koželj, S. Vrtnik, A. Jelen, M. Krnel, D. Gačnik, A. Meden, M. Wencka, J. Leskovec, S. Maiti, W. Steuer, J. Dolinšek: Discovery of a FeCoNiPdCu high-entropy alloy with excellent magnetic softness, Advanced Ingineering Materials 2019: 1801055 https://sites.google.com/site/tramp2019marrakech/ mailto:magdalena.wencka@ifmpan.poznan.pl Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p24 IS009 MAGNETOELECTRIC EFFECT IN CHEMICALLY DISORDERED PEROVSKITE MULTIFERROICS V. V. Laguta1,2,3*, A. V. Ragulya1,3 1Institute for Problems of Materials Science, National Academy of Sciences of Ukraine, Krjijanovskogo 3, 03142 Kyiv, Ukraine 2Institute of Physics AS CR, Cukrovarnicka 10, 162 53 Prague, Czech Republic, 3NANOTECHCENTER LLC, Krjijanovskogo 3, 03142 Kyiv, Ukraine Email*/laguta@fzu.cz ABSTRACT Multiferroics are materials having two or more order parameters (for instance, magnetic, electric or elastic) coexisting in the same phase. They have emerged as an important topic in condensed matter physics due to both their intriguing physical behaviors and a broad variety of novel physical applications they enable. The unique physical properties of multiferroics originate from the complex interactions among the structural, polar and magnetic long-range order parameters. In magnetoelectric (ME) multiferroic materials, besides of the linear and biquadratic couplings of magnetic and electric order parameters, quadratic paramagnetoelectric (PME) effect should exist in the paramagnetic phase below the TC temperature of the paraelectric-to- ferroelectric phase transition, where the electric polarization is non-zero. In general, the quadratic ME coupling is much less studied in magnetoelectrics than the linear coupling while the former one can be even larger than its linear counterpart in antiferromagnetic (AFM) materials. Large ME coupling in AFM multiferroics, especially in ceramic samples, are attractive for applications in ME memory elements and spintronics as AFM domains are almost unsusceptible to external magnetic fields that preserves well the stored information. The coupling between ferroelectricity and antiferromagnetism offers an intriguing possibility of electric field control and switching of AFM domains. It is aim of this report to present results of comprehensive study of the ME effect in chemically disordered perovskite multiferroics based on ferroelectric-antiferromagnets Pb(Fe1/2Nb1/2)O3 [PFN] and Pb(Fe1/2Ta1/2)O3 [PFT]. Usage of ceramic samples enables performing dielectric and ME response measurements up to 400-500 K without marked influence of conductivity. However, main attention is paid to low (T<150 K) temperatures, where the ME coupling coefficient is extremely large (as compared to the well- known multiferroic BiFeO3) and shows strong nonlinearity. We also present the results of ME measurements in PFN ceramics with 900 and 1800 switching of electric polarization in the AFM phase which demonstrate that the alignment of electric domains leads to corresponding alignment of magnetic domains. The behavior of the ME coupling between disordered (dynamically or statically) spin ensemble and polarization in case of spin-glass or superparamagnetic phases was studied as well. Extremely large ME response is demonstrated in magnetoelectrics with superparamagnetic phase. Phenomenological Landau theory of phase transitions is used to explain experimental data. Keywords: multiferroic, magnetoelectric, multifunctional material, magnetoelectric AKNOWLEDGEMENT: This work was supported in part by the Research Executive Agency (grant agreement 778072 — ENGIMA — H2020-MSCA-RISE-2017). https://sites.google.com/site/tramp2019marrakech/ mailto:laguta@fzu.cz Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p25 IS010 PROBING STRUCTURAL AND MAGNETIC PROPERTIES OF THIN FILMS BY 57Fe MÖSSBAUER SPECTROMETRY J. Juraszek1*, F. Appert, S. Jouen, M. Jean, L. Diallo, L. Lechevallier, A. Fnidiki 1Normandie Univ., UNIROUEN, INSA Rouen, CNRS, GPM, 76000, Rouen, France Email*/ jean.juraszek@univ-rouen.fr ABSTRACT In this talk, recent advances of 57Fe conversion electron Mössbauer spectrometry (CEMS) for the analysis of thin films will be presented. Examples of applications will include various functional materials such as multiferroic thin films [1-2] and diluted magnetic semiconductors [3]. For multiferroic bismuth ferrite (BiFeO3) thin films, we will show that both strain and magnetic field destabilize the cycloidal spin structure (figure 1), resulting in a critical magnetic field sharply reduced from the bulk value [4]. Figure 1: Mössbauer spectrum at 300 K of a 70-nm thick (001) BFO thin film grown onto GSO substrate and corresponding cycloidal spin structure derived from the fit. This work is supported by the Région Normandie and the European Regional Development Fund of Normandy (ERDF) through the "MAGMA" project, and by the Région Normandie through the “TEMPO” project. REFERENCES: [1] I.C. Infante, J. Juraszek, S. Fusil, et al. , Physical Review Letters 107, 237601 (2011). [2] D. Sando, A. Agbelele, D. Rahmedov, et al. , Nature Mater., 12, (2013) 641–646. [3] M. L. Diallo, L. Diallo, A. Fnidiki, et al., J. Appl. Phys. 122, (2017) 083905. [4] A. Agbelele, D. Sando, C. Toulouse, et al., Adv. Mater. (2017) 1602327. Keywords: thin film, multiferroic, Mössbauer spectrometry, magnetism. https://sites.google.com/site/tramp2019marrakech/ mailto:jean.juraszek@univ-rouen.fr Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p26 IS011 ELECTROCALORIC EFFECT IN FERROELECTRIC COMPOSITES AND DOMAIN STRUCTURE Yaovi Gagou1* E-mail*/ yaogagou@gmail.com ABSTRACT Climate global warming is becoming a very serious problem all over the world, so that everyone must play their part in helping to save our planet. It should be noted that industrial production alone generates nearly 51% of greenhouse gases. Among these greenhouse gases, there are coolants used in cooling devices. Freon and these analogs are also poisonous gases that are not environmentally friendly, so they must be disposed of in the future. The alternative will be to produce cooling based on the barocaloric (BCE), magnetocaloric (MCE), piezocaloric (PCE)or electrocaloric effect (ECE). Physics based on these physical properties is gaining importance in order to replace the cooling gases with the solid material and the applications could take place massively in the near future, if the variation of the electrocaloric temperature approaches the 10 K for a material under a reasonable applied field. In this presentation, we investigated the electrocaloric effect of phase transition region in ferroelectrics in general and those based on BaTiO3. At first, we were interested in the effect of doping to decrease Curie temperature towards room temperature and then on the amplification of the ECE. The first goal is reached. With regard to the amplification of the ECE our work continues on the study of the grain size effect and the control of domain structure and the combination of ferroelectric materials. The obtained results on the ferroelectric composites based on BCTL or BTSr and the perspectives were highlighted. https://sites.google.com/site/tramp2019marrakech/ mailto:yaogagou@gmail.com Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p27 IS012 MECHANISMS DURING THIN FILM REACTION AND THEIR INFLUENCE ON THIN FILM PROPERTIES Alain PORTAVOCE1* E. Assaf, L. Patout, M. Bertoglio, K. Hoummada, C. Alfonso, A. Charaï, and S. Bertaina 1IM2NP, CNRS-Aix-Marseille Univ., Faculté des Sciences de Saint-Jérôme case 142, 13397 Marseille, France Email*/ alain.portavoce@im2np.fr ABSTRACT Thin films are essential bricks of many nanostructures used in nanotechnology devices. For example, the gate of complementary metal oxide semiconductor (CMOS) transistors is a stack of several nano-films of different electrical properties, typically: 20 nm- thick SiO2/ 5 nm-thick monocrystalline doped-semiconductor/ 2 nm-thick SiO2/ 10 nm-thick HfO2/ 3 nm-thick TiN/ 20 nm-thick highly-doped polycrystalline Si/ 20 nm-thick silicide/ W 1ST metallic contact. In order to get the desired properties, some layers composing the nanostructure need to be made of given phases containing several elements (given structure and composition). In this case, the desired phase needs to be grown after deposition, often using solid-state reaction. To this aim, several reaction processes can be used to form the phase of interest, such as thin-film reactive diffusion, which is a usual process in industry (“Salicide” process in microelectronics for silicide growth, for example). However, the reaction process type is expected to influence the structure and the atomic distribution of the obtained layer, and thus, could modify the film properties. Consequently, the growth process should be wisely chosen. This study presents the influence of two types of solid-state reaction, reactive diffusion (RD) and non-diffusive reaction (NDR), on the chemical, structural, and magnetic properties of ferromagnetic Mn5Ge3 and MnCoGe thin films, potentially interesting for Ge- based spintronics. In our case, RD-mediated growth is characterized by a strong initial composition gradient and “long-range” atomic transport during the film growth, while NDR takes place without composition gradient and without long-range atomic transport. The comparison of these two opposite methods illustrates the influence of atomistic processes taking place during solid-state crystal growth, such as atomic transport, on the properties of the obtained crystal. The results show also how the control of atomic transport could allow thin film properties to be modified. https://sites.google.com/site/tramp2019marrakech/ mailto:alain.portavoce@im2np.fr Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p28 IS013 DYNAMICAL PROPERTIES OF FERROELECTRIC THIN FILMS AND SUPERLATTICES Razumnaya A.G1*., Linnik E.D., Mikheykin A.S., Tikhonov Yu.A., Lukyanchuk I.A. 1Southern Federal University Email*/ agrazumnaya@sfedu.ru ABSTRACT Ferroelectric thin films and artificial superlattices composed of alternating ferroelectric layers usually exhibit better functional parameters than bulk materials of the same compositions or even can have new properties, not reachable in the bulk. Epitaxial Ba0.5Sr0.5TiO3 (BST0.5) thin film, bi-color artificial BaTiO3/Ba0.5Sr0.5TiO3 (BT/BST) and tri-color BaTiO3/Ba0.5Sr0.5TiO3/SrTiO3 (BT/BST/ST) superlattices were grown on cubic single crystal (001)MgO substrates by pulsed laser deposition using alternating focusing of the laser beam on stoichiometric BT, BST, and ST targets. The bi- and tri-color superlattices were symmetric with the modulation periods of Λ = 135 Å and 143 Å, consequently. The total thickness of the grown BT/BST and BT/BST/ST superlattices was 1000 nm, while that of the BST-film was 600 nm. For comparison, the Ba0.5Sr0.5TiO3 (BST05) ceramics sample was prepared by conventional solid-state reaction method from stoichiometric mixtures of BaCO3, SrCO3, and TiO2 raw materials. The structural parameters of the layers were determined by X-ray diffraction. Near- and sub- Terahertz dynamics of soft and Debye-type central modes was studied by the polarized Raman spectroscopy of the BT/BSTx superlattices in the temperature range of 80-500 K. Based on the temperature dependence of the polar modes we revealed the phase transitions temperatures in the studied heterostructures. In the sub-THz frequency range of the XZ spectra, we observed the coexistence of the Debye-type central peak and soft mode in bi-color BaTiO3/Ba0.5Sr0.5TiO3 superlattice. This work was supported by internal grant No. VnGr-07/2017-23 of Southern Federal University, Russia, and by H2020-RISE-ENGIMA action Keywords: ferroelectrics, Raman spectroscopy, lattice dynamics, crystal structure, phase states https://sites.google.com/site/tramp2019marrakech/ mailto:agrazumnaya@sfedu.ru Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p29 IS014 CONTRIBUTION TO THE IMPROVEMENT OF LIGHT EMITTING DIODES BASED ON NITRIDES Z. Benzarti Khalfallah1* 1Laboratoire des Matériaux Multifoncionnels et Applications (LaMMA), Département de Physique, Faculté des Sciences de Sfax, Université de Sfax, Route de Soukra km 3,5 B.P. 1171 – 3000 Sfax, Tunisie. Email*/ zohra.benzarti@gmail.com ABSTRACT Nowadays, the commercial success of light-emitting diodes (LEDs) has encouraged researchers to focus on the achievement of even higher efficiency optoelectronic devices. However, the improvement in the performance of LEDs is limited by some issues related to the active region and template properties, which have to be ameliorated. Commonly, sapphire substrates are used for the nitride material growth. Nevertheless, the large mismatch with nitride templates is considered as a source of significant number of defects, which reduce LED’s luminescence. In order to overcome these drawbacks, we have proposed novel technology, so-called “SiN treatment”. This technique has been proved to be very promising method for nitride material growth. It is a simple and cost effective technology, which introduces a randomly in-situ SiN nano-masking on sapphire substrate. We have elaborated Si-doped GaN template layer and nitride-based multiple quantum well (MQW) light-emitting diodes with GaN buffer layer using SiN treatment by metalorganic vapor phase epitaxy (MOVPE). It is shown that optical properties of InGaN/GaN MQWs depend on the defect density of elaborated templates. Thereafter, we report an enhancement of the emission of MQW LEDs using SiN treatment, compared to the MQW LED emissions deposited on a conventional GaN buffer layer. keywords: GaN, MOVPE, SiN treatment, LEDs. https://sites.google.com/site/tramp2019marrakech/ mailto:zohra.benzarti@gmail.com Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p30 Orals https://sites.google.com/site/tramp2019marrakech/ Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p31 OR001 WEAR AND FRICTION BEHAVIOR OF THE POROUS TiNiCu ALLOY FOR BIOMEDICAL APPLICATION Latifa K. 1*, Hacène C.1, Abednour H.1, Soumaya M.2 1 National School of Mines and Metallurgy, Annaba- Algeria 2 Research Center In industrial technologies CRTI, Algiers- Algeria E Mail*/ latifabiomat@gmail.com ABSTRACT Porous TiNiCu alloys are used in wide and different engineering applications due to their excellent mechanical properties such as ductility, strength, toughness, etc. Also, these alloys have a good resistance to corrosion and the excellent biocompatibility properties, the demands increased to use it in different medical applications. The biomedical application of these alloys requires good structural and surface biocompatibility. It is characterized by the damage caused by the implant-tissue interaction. This damage is related to products released by friction. For this purpose, the objective of this work is the study of the tribological behavior of porous TiNiCu alloys, using two static partners: alumina ball and bone pion.In this research work, porous TiNiCu alloys were prepared from the pre-alloyed powders. The milling was realised using a planetary ball mill for 10 hours an under argon atmosphere. The The milled TiNiCu powders were then sintered at temperatures of 950°C for 7h.The results of the investigation confirm that wear degradation is manifested by the abrasive mechanism for both partners. The addition of copper improves the tribological properties of the alloys developed by decreasing the coefficient of friction. Keywords: TiNiCu alloys, sintering, wear. https://sites.google.com/site/tramp2019marrakech/ mailto:latifabiomat@gmail.com Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p32 OR002 DESIGN OF A BIO-FLEXIBLE PIEZOELECTRIC NANOGENERATOR FOR BIOMECHANICAL ENERGY HARVESTING Z. Hanani a,b,*, D. Mezzane a, M. Amjoud a, M. Lahcini c, Y. Gagou d, H. Ursic e, A. Jamali f, N. Novak e, S. Fourcade b, M. El Marssi d, Z. Kutnjak e and M. Gouné b a LMCN, Cadi Ayyad University, Marrakesh, 40000, Morocco b ICMCB, University of Bordeaux, Pessac, 33600, France c LCO2MC, Cadi Ayyad University, Marrakesh, 40000, Morocco d LPMC, University of Picardy Jules Verne, Amiens, 80039, France e Jožef Stefan Institute, Ljubljana, 1000, Slovenia f PME, University of Picardy Jules Verne, Amiens, 80039, France E-mail*/ Zouhair.hanani@edu.uca.ma ABSTRACT Over the last decade, the research and development of piezoelectric and sensing devices based on functional piezoelectric materials has made significant progress 1. Piezoelectric nanogenerators (NGPs) are increasingly becoming a new energy conversion source with promising capabilities for mechanical energy harvesting using piezoelectric materials at the nanoscale 2. So far, the market for piezoelectric devices is largely dominated by lead-based generators based on PZT (PbZr1-xTixO3) systems because of their excellent piezoelectric properties. However, lead is toxic and harmful to the environment and our health 3. Consequently, it is highly desirable to develop environmentally friendly piezoelectric materials whose piezoelectric properties would be comparable to those of lead-based components 4. In this regard, lead-free ceramic Ba0.85Ca0.15Zr0.10Ti0.90O3 (BCZT) with excellent dielectric, ferroelectric and piezoelectric properties were embedded in the biodegradable polylactic acid (PLA). BCZT fillers were elaborated by low-temperature hydrothermal route and functionalized via core-shell structuration using polydopamine layer (PDA). BCZT/PLA nanocomposite films were elaborated by solvent casting method. The core-shell structuration of BCZT particles leads to an enhancement of the dielectric, ferroelectric and energy storage performances. Finally, BCZT/PLA eco-friendly and bio-flexible nanogenerator was designed to have an insight on the output performances. Keywords: Lead-free ceramic, biodegradable polymer, nanocomposite, piezoelectric nanogenerator, energy storage. REFERENCES 1 K. Il Park, C.K. Jeong, J. Ryu, G.T. Hwang, and K.J. Lee, Adv. Energy Mater. 3, 1539 (2013). 2 M.A. Parvez Mahmud, N. Huda, S.H. Farjana, M. Asadnia, and C. Lang, Adv. Energy Mater. 8, 1 (2018). 3 Binoy Bera, Imp. J. Interdiscip. Res. 2, (2016). 4 Z. Hanani, D. Mezzane, M. Amjoud, A.G. Razumnaya, S. Fourcade, Y. Gagou, K. Hoummada, M. El Marssi, and M. Gouné, J. Mater. Sci. Mater. Electron. 30, 6430 (2019). https://sites.google.com/site/tramp2019marrakech/ mailto:Zouhair.hanani@edu.uca.ma Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p33 OR003 PHOTOCATALYTIC AND PHOTOLUMINESCENT PROPERTIES OF A SYSTEM BASED ON SmPO4 NANOSTRUCTURE PHASE A. Bouddouch1, 2, *, A. Baabou2, E. Amaterz1, 3, A. Taoufyq1, B. Bakiz1, J. C. Valmalette2, F. Guinneton2, S. Villain2, A. Benlhachemi1 (1) Laboratoire Matériaux et Environnement (LME), Faculté des Sciences, université Ibn Zohr, B.P 8106, Cite Dakhla, Agadir, Maroc. (2) Institut Matériaux Microélectronique et Nanosciences de Provence, Université de Toulon, Aix Marseille Univ, CNRS, IM2NP, Toulon, France. (3) Institut de Thermique, Mécanique, Matériaux (ITHEMM), Université de Reims Champagne-Ardenne, Reims, France. Email*/ abdo.bouddouch@gmail.com ABSTRACT In the present work, we investigate the structural, microstructural, vibrational, photocatalytic and luminescence properties of the system SmPO4 thermally treated at 900 °C. Polycrystalline sample was elaborated using a coprecipitation technique. The sample was then characterized using X-ray diffraction, Scanning electron microscopy, Infrared spectroscopy, Raman spectroscopy and photoluminescence analyses under UV excitation. X- ray diffraction profile analyses showed that the monoclinic phase P21/n was observed. The scanning electron microscopy experiments showed a homogeneous distribution of morphologies and indicated that SmPO4 was in nano-sized particle. Attributions of Raman and FTIR vibrational modes were proposed. For the photocatalytic activity, UV-visible spectrophotometer has used to analyze the evolution of photodegradation of rhodamine B. Photoluminescence (PL) properties of SmPO4 nanoparticle has been investigated and reported. Keywords: Samarium phosphate SmPO4, luminescence properties, co-precipitation technique, photocatalytic activity, diffraction techniques, spectroscopy methods. Acknowledgments This project was financially supported by CAMPUS FRANCE (PHC TOUBKAL 2018 (French-Morocco bilateral program) Grant Number: 38999WE). https://sites.google.com/site/tramp2019marrakech/ mailto:abdo.bouddouch@gmail.com Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p34 OR004 HIGHLY TEXTURED Ge(Sn) THIN FILMS GROWN BY MAGNETRON SPUTTERING ON Si(100) H. Khelidj1,3*, A. Portavoce1, K. Hoummada2, M. Bertoglio1, M. C. Benoudia3, D. Mangelinck1 1CNRS, IM2NP, Faculté des Sciences de Saint-Jérôme case 142, 13397 Marseille, France 2Aix-Marseille Université, IM2NP, Faculté des Sciences de Saint-Jérôme case 142, 13397 Marseille, France 3Ecole Nationale Supérieure des Mines et de la Métallurgie, L3M, Annaba, Algeria Adresse /e-mail : IM2NP, Faculté des Sciences de Saint-Jérôme case 142, 13397 Marseille, France Email*/ hamza.khelidj@im2np.fr ABSTRACT CMOS Si-Photonics is currently considered as a key technology for the development of the future generation of communication systems. In particular, Ge(Sn) semiconductor alloys have received increasing attention since it should allow the integration of laser in the CMOS technology [1], which is an essential brick still missing in Si - Photonics technology. Indeed, Ge(Sn) films are expected to be compatible to the CMOS technology, and to exhibit a direct bandgap for Sn concentrations higher than 10 at.%. Furthermore, Ge(Sn) should possess carrier mobility exceeding both the carrier mobility in Ge and Si. However, the low Sn solubility in Ge ( 1 at%) and the large lattice mismatch between α-Sn (6.489 Å) and Ge (5.646 Å) or Si (5.431 Å), complicate the epitaxial growth of Sn-rich Ge(Sn) layers on Si substrates. Growth techniques, such as chemical vapor deposition (CVD) and molecular beam epitaxy (MBE), were shown to be able to grow Sn-rich Ge(Sn) thin films in epitaxy on Si(001) substrate, exhibiting good crystalline properties [2]. Nevertheless, magnetron sputtering is one of the CMOS-compatible techniques the most cost-effective for mass manufacturing. This technique was shown to be able to produce Ge(Sn) thin films deposited on Si or Ge with reasonable electrical properties and high Sn concentration, allowing for the production of efficient Ge(Sn)-based devices [3]. The present work aimed to study Ge(Sn) thin film elaboration on Si(100) substrate, using magnetron sputtering. Ge1−xSnx thin films with 0.04 ≤ x ≤ 0.13 were deposited at room temperature (RT) or at 360 °C on Si(100) substrates, with or without the pre-deposition of a Ge buffer. The film growth kinetics was studied by in-situ XRD, while the film microstructure was investigated using XRD and SEM, and their surface state was studied by AFM. In situ XRD measurements show a strong kinetic competition between Ge(Sn) crystallization and Sn incorporation, complicated by Sn melting and de-wetting, limiting the possibilities of Ge(Sn) layer production. Ge and Sn phase separation can lead to strongly inhomogeneous layers, with probably amorphous Ge inclusions. However, Sn selective etching using a 5% HF solution can be used to improve the surface state of the films. RT deposition leads to the growth of polycrystalline Ge(Sn) layers, while the subsequent deposition of a Ge buffer and the Ge(Sn) film at 360 °C allows the growth of a strongly textured Ge(Sn) layers, probably in epitaxy on the Si(001) substrate, with a good surface state and a high Sn incorporation (~ 13 at%). Key words: Si photonics, CMOS, Ge(Sn), magnetron sputtering, epitaxy. REFERENCES: [1] H. Pérez Ladrón de Guevara, A.G. Rodríguez, H. Navarro-Contreras, M.A. Vidal, Determination of the optical energy gap of Ge1−xSnx alloys with 0300°C) for use in applications in which materials are subjected to harsh operating conditions, such as in power electronics, deep-well oil and gas exploration, and hybrid vehicles applications. Sodium bismuth titanate (Abbreviated as NBT) is considered as one of the promising candidates for energy storage applications due to its interesting properties. However, pure NBTsuffers fromhigh conductivity andlarge coercive field. Doping with rare earth elements was found as an appropriate way toenhance the physical properties of NBT. In the present work, we examine the influence addition of Dysprosium element on the structural, electrical, and energy storage properties ofNa0.5(Bi1−xDyx)0.5TiO3 (xDyNBT) system. Interestingly, the inclusion of Dy3+ allows not only asubstantial decrease of the coercive fieldand increasethe resistivity of pure NBT but also to ahigh stability of the dielectric permittivity (ɛ) over a wide temperature range (~90 − 510°C) with ∆ɛ ≤ ±15% variation. Further, the studied system was found to exhibit improved energy storage density of (1.2 J/cm3) at high temperatures (200°C). The obtained results are very promisingand open a great potential for high temperature power electronics applications. Keywords: NBT, Dielectric properties, High temperature stability, Energy storage, Capacitor https://sites.google.com/site/tramp2019marrakech/ mailto:manalbenyoussef@gmail.com/Phone:+33322827837 Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p69 Posters https://sites.google.com/site/tramp2019marrakech/ Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p70 P001 THE THEORETICAL AND EXPERIMENTAL CHARACTERISTICS OF NOVEL MATERIAL BASED ON STRANDBERG-TYPE HYBRID COMPLEX (C6H10N2)2[Co(H2O)4P2Mo5O23].6H2O N. Baaalla 1,2*, Y. Ammari3, E.K. Hlil 4, R. Masrour 2, A. El Kenz 1 1LaMCScI, Laboratory of Condensed Matter and Interdisciplinary Sciences, B.P. 1014, Faculty of Science, Mohammed V University, Rabat, Morocco. 2 Laboratory of Materials, Processes, and Quality, Cady Ayyed University, National School of Applied Sciences, Safi, Morocco. 3 Laboratoire de Chimie des Matériaux, Faculté des Sciences de Bizerte, Université de Carthage, 7021 Zarzouna, Bizerte, Tunisia. 4 Institut Néel, CNRS, Université Grenoble Alpes, Grenoble, France. E-mail*/ nora.baaalla@um5s.net ABSTRACT The hybrid strandberg complex materials have attracted intensive interest due to their multifunctional properties. In this work, we report the structural, electronic and optical properties of the novel synthetized compound (C6H10N2)2[Co(H2O)4P2Mo5O23].6H2O, investigated successfully by the First principle calculations, based on the density functional theory (DFT). The nanocrystals of (C6H10N2)2[Co(H2O)4P2Mo5O23].6H2O with triclinic structure were characterized by X-ray powder diffraction (XRD). The profiles of the density of states and the optical spectra including the real and imaginary part of dielectric function were presented and analyzed in detail, the results are in good agreement with experimental measurement. It is found that the compound presents a high absorption coefficient in the visible range. A systematic analysis of the experimental and theoretical results shows a good band gap and a high optical property, which reveals promising original material for advanced in optoelectronic and photovoltaic applications. Keywords: (C6H10N2)2[Co(H2O)4P2Mo5O23].6H2O, Optical properties, absorbance, electronic structure, DFT. https://sites.google.com/site/tramp2019marrakech/ mailto:nora.baaalla@um5s.net Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p71 P002 FEATURES OF SINTERING OF MULTILAYER OBJECTS Baranovskyi D. I*. Frantsevich Institute for Problems of Materials Science of NASU, NanoTechCenter LLC E-mail*/ baranovskyi.dmytro@gmail.com ABSTRACT The development of nanotechnology stimulates the improvement of methods for obtaining and researching thin films. Today, thin films have a very wide range of applications, from functional coatings to the manufacture of multilayer systems such as capacitors or fuel cells. One of the most productive methods for obtaining thin films is tape casting. With this method, our team managed to get film about 1 μm in thickness. But this thickness has been reached in the green body sample, that ıs why more interesting fact is thickness after heat treatment. After all, the removal of the organic component can lead to significant shrinkage during sintering. Thus, the main aim of this study is optimization of sintering process of thin films and the study of competing processes of mass transfer at different heating rates. Thin films were prepared from paste based on nanosized BaTiO3 powder with a particle size of 20-25 nm. The study of the kinetics of sintering process will be carried out in a dilatometric installation. And ınvestigation of grain growth and porous structure will be conducted at various stages of sintering, at temperatures range from 700 to 1200 °С. The resulting samples wıll be examined by using a number of techniques: optical profilometry method, XRD, microscopy, and others. Keywords: thin films, tape casting, kinetics of sintering, dilatometry, profilometry method. https://sites.google.com/site/tramp2019marrakech/ mailto:baranovskyi.dmytro@gmail.com Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p72 P003 STRUCTURAL AND DIELECTRIC PROPERTIES OF SODIUM NIOBATE CERAMIC NaNbO3 WITH GLASS ADDITIONS S. BENYOUNOUSSY(1,*), L.BIH2,3A. EL BOUARI1, 1. Laboratory of Physico-Chemical of Materials Applied (LPCMA), Faculty of Sciences Ben M’sik, University HASSAN II of Casablanca, 20670, Morocco 2. Group of physico-chemistry of condensed matter (PCMC), Faculty of Sciences Meknes, University Moulay Ismail, Meknes, Morocco 3. Department Materials and Processes, ENSAM Meknes, University Moulay Ismail, Meknes, Maroc. E-mail* : sanaa.benyounoussy@gmail.com ABSTRACT NaNbO3 is a ferroelectric material which has claimed the attention of researchers and designers of equipment owing to its unique physical properties and as a basis for a class of ecologically benign active materials. Hence, NaNbO3 has been studied by several workers. However, less work has been reported on NaNbO3 glass-ceramics. In the present work, NaNbO3 has been synthesized by solid state sintering technique while the glasses has been synthesized by the conventional melt-quenching technique. The NaNbO3 ceramics were synthesized by adding different contents of glass into NaNbO3. Two composites with different glass weight percentage have been elaborated and sintering at different temperatures. Density measurements, Raman spectroscopy, and Scanning Electron Microscopy are used to characterize their structural study. Electrical properties of the composite samples are carried out by impedance spectroscopy in the frequency range of 10 Hz to 1 MHz under various temperatures from 300 to 473 K. Keywords: phosphate glasses, Sodium niobate, composite, Raman spectroscopy, SEM, dielectric properties. https://sites.google.com/site/tramp2019marrakech/ mailto:sanaa.benyounoussy@gmail.com Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p73 P004 LARGE ELASTOCALORIC EFFECT IN LIQUID CRYSTAL ELASTOMERS Dejvid Č.*,1 Marta L.,1 Andraž R.,1 Nikita D.,1 Boštjan Z.,1 Zdravko K.,1 Brigita R.1 1 Jožef Stefan Institute, Ljubljana, Slovenia Email*/ Dejvid.Cresnar@ijs.si ABSTRACT Caloric effects are manifested in the heating or cooling a caloric material due to the application or removal, respectively, of the external field under nearly adiabatic conditions. Materials with large caloric effects, such as the elastocaloric (eC) effect, have the promise of realizing new solid-state refrigeration techniques [1]. Soft materials, called liquid crystal elastomers (LCEs), are good candidates exhibiting a large elastocaloric effect with potentially better elastocaloric responsivity than shape memory alloy wires, in which the eC temperature change of 40 K was observed at 0.8 GPa stress field [2, 3]. In this contribution a review of recent direct measurements of the eC effect in LCEs will be given. The eC temperature change of about 1 K was observed in MCLCEs at relatively small stress field of 0.6 MPa [4]. Soft materials can play a significant role as active cooling elements and parts of thermal diodes or regeneration material in the development of new cooling devices. REFERENCES [1] X. Moya et al., Nature Mater. 13, 439 (2014). [2] E. A. Pieczyska et al., Exp. Mech. 46, 531 (2006). [3] I. Lelidis and G. Durand, Phys. Rev. Lett. 76, 1868 (1996). [4] M. Lavrič, B. Zalar, B. Rožič, Z. Kutnjak, to be published Keywords: elastocaloric, liquid crystal, liquid crystal elastomers https://sites.google.com/site/tramp2019marrakech/ mailto:Dejvid.Cresnar@ijs.si Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p74 P005 MAGNETOCALORIC PROPERTIES OF THE LaFe13–XSiX ALLOYS: AB INITIO CALCULATIONS AND MONTE CARLO SIMULATION K. Daoudi 1, *, H. Zaari 1, A. El Kenz 1, A. Benyoussef 1,2,3 1 Laboratory of Condensed Matter and Interdisciplinary Sciences, Faculty of Sciences, Mohammed V University, Rabat, Morocco 2 Materials and Nanomaterials Center, MAScIR Foundation , Rabat Design Center Rue Mohamed Al Jazouli – Madinat Al Irfane , Rabat 10 100 – Morocco 3 Hassan II Academy of Science and Technology, Rabat, Morocco Email*/ daoudikhadijaa@gmail.com ABSTRACT Magnetic refrigeration techniques based on the magnetocaloric effect (MCE) have recently been demonstrated as a promising alternative to conventional vapor-cycle refrigeration. In the present work, the LaFe13–xSix alloys (1.0 ≤ x ≤ 1.6) has been studied by using Density Functional Theory implemented in Quantum Espresso package. Giant magnetocaloric properties are determined in the framework of Monte Carlo simulation and the Means field Theory. These properties are summarized into thermodynamic quantities. The results indicate that the LaFe13–xSix alloys exhibit a large magnetic entropy change over a wide temperature range. Keywords: LaFe13–xSix alloys, magnetocaloric materials, DFT, Monte Carlo, Means field Theory. https://sites.google.com/site/tramp2019marrakech/ mailto:daoudikhadijaa@gmail.com Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p75 P006 COBALT DOPED COPPER OXIDE THIN FILMS FOR SOLAR SELECTIVE ABSORBERS APPLICATION Hind alaakib1 E-mail*/ hind.elaakib@gmail.com Abstract: In this study, undoped and cobalt doped copper oxide thin films were deposited by RF sputtering. In addition, the covered surface was varied to investigate the effect of doping percentage on the structural, electrical, morphological and optical properties of the obtained thin films. All the obtained thin film samples have good solar selectivity (>12) with low thermal emittance (<7%) and high solar absorptance (>92%). The Co:CuO thin films possess high solar-selectivity value of 12 and thus could be suitable and used as a novel candidate material for selective absorber films in solar collectors for thermal energy conversion. Keywords: Cobalt doped CuO; thin films; optical properties; structural and electrical properties; RF sputtering; selective absorber and emissivity. https://sites.google.com/site/tramp2019marrakech/ mailto:hind.elaakib@gmail.com Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p76 P007 ZINC CHLORIDE AS PRECURSORS TO ELABORATE ZINC OXIDE WITH SPIN COATING TECHNIQUE E. Elmahboub, A. Elhichou, and M. Mansori. Groupe d'Étude des Matériaux Optoélectroniques (G.E.M.O.) F.S.T. BP 549, Cadi Ayyad University, Marrakech, Morocco E mail*/ elmahbobeelyazid@gmail.com ABSTRACT The zinc chloride is one of the precursors used to deposited the zinc oxide (ZnO) thin films by sol-gel spin coating technique from aqueous solution onto glasses substrates at optimum conditions. The effect of the concentration of precursor on the structural, optical and electrical properties of ZnO thin films has been investigated. The X-ray diffraction analysis showed typical patterns of the hexagonal ZnO structure for all films. The films were polycrystalline with the (002) preferred orientation. The grain size and optical band gap were evaluated for different concentrations. The optical transmittance measurements of ZnO thin films showed that all films are transparent in the visible regions and decrease with increase the ZnCl2 concentration. The film with 0.4 M ZnCl2 has a high crystallographic quality with an energy band gap of 3,36 eV. The produced ZnO thin films at optimum conditions may be useful for specific applications as transparent n-type windows in solar cells for sensor devices where large surface areas are needed. Keywords: Zinc oxide; Thin films; Nanoparticles; Zinc chloride; Spin coating. https://sites.google.com/site/tramp2019marrakech/ mailto:elmahbobeelyazid@gmail.com Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p77 P008 Al:ZnO PROPERTIES IMPROVEMENT BY Mg CODOPING AS OPTICAL WINDOW A. EL Hamidi*, K. Meziane, A. Elhichou, A. Almaggoussi Groupe d’Etude des Matériaux Optoélectroniques (GEMO), FST Marrakech, University Cadi Ayyad, BP549, Av. A. Khattabi, Marrakech, Morocco E-mail*/ eeasmaaelhamidi@gmail.com ABSTRACT In the present work, we first studied the influence of aluminum doping on the structural and optical properties of zinc oxide thin films. Thus, thin layers of zinc oxide have been successfully deposited by the sol-gel technique on glass substrates under optimized experimental conditions. The pH of the solution and the annealing temperature were maintained at 10 and 500 ° C respectively. Thin layers of ZnO were doped at different Al concentrations (1%, 3%, 5% and 7%). The results of XRD showed that all the films lost the preferential orientation according to the (002) plane, while the UV results showed a decrease of the transmittance as soon as the Al concentration exceeded 1%. This deterioration in optical properties led us to co-dope thin layers of ZnO by (Mg, Al) in order to improve the optical and structural properties. Therefore, in a second step, we opted for co- doping by simultaneously introducing aluminum and magnesium in varying proportions. The whole molar amount of impurity was maintained constant and equal to 5%. The results show that with the increase in the Mg percentage, the preferential orientation of the films according to (002) improves and the transmittance reaches 80%. The optimized results were obtained for a co-doping concentration (Al-Mg) with a ratio of 2/1. https://sites.google.com/site/tramp2019marrakech/ mailto:eeasmaaelhamidi@gmail.com Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p78 P009 THERMO-RAMAN STUDIES AND ELECTRICAL PROPERTIES OF THE Sr1.15Na1.7Nb4W1-XMoXO15 CERAMICS H. Es-soufia* (a) Equipe de Physico-Chimie de la Matière Condensée, PCMC, Faculté des Sciences de Meknes. Université Moulay Ismail, Morocco. E-mail*/hichamessoufi@gmail.com L. Biha,b (a) Equipe de Physico-Chimie de la Matière Condensée, PCMC, Faculté des Sciences de Meknès. Université Moulay Ismail, Morocco. (b) Département matériaux et procédés, ENSAM Meknès, Université Moulay Ismail, Meknès, Morocco. bihlahcen@yahoo.fr H. Bihc (c) Département de Chimie, Faculté polydisciplinaire de Taza, Morocco. bih.hssain@usmba.ac.ma A. Alimoussad, D. Mezzaned (d)Laboratoire de la matière condensée et nanostructure–LMCN, Faculté des Sciences et Techniques Guéliz-Marrakech. Morocco. aalimoussa@gmail.com, d.mezzane@gmail.com ABSTRACT The Sr1.15Na1.7Nb4W1-xMoxO15 (0≤x≤1) ceramics, labeled SNNbWM-x, were elaborated by the solid state route. Their structures were studied by X-ray diffraction and Raman spectroscopy and their electrical properties were investigated by impedance spectroscopy. X-Ray patterns of the ceramics reveal that the substitution of tungsten by molybdenum induces a full solid solution and the compounds crystallized in single-phase tetragonal tungsten bronze (TTB) with space group P4bm. Raman spectra of the SNNbWM-x compounds highlighted the vibration modes of the different cations involved in the TTB structure and showed a small peak’s displacement according to the Mo/W ratio. The Raman peak position temperature dependence studies had allowed to identify the presence of a phase transition around the temperature Te = 270°C in each compound. The investigation of the electrical properties of the SNNbWM-x samples in the frequency range 20 Hz–106Hz at various temperatures from room temperature to 550°C showed that theses ceramics exhibited a phase transition around 270°C in agreement with the thermo-Raman studies. https://sites.google.com/site/tramp2019marrakech/ mailto:hichamessoufi@gmail.com mailto:bihlahcen@yahoo.fr mailto:bih.hssain@usmba.ac.ma mailto:aalimoussa@gmail.com mailto:d.mezzane@gmail.com Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p79 P010 AB-INITIO CALCULATION AND MONTE CARLO SIMULATION OF THE MULTIFERROIC RMnO3 Fatima Zahrae Kassimi1*, A. El Kenz1 and A.Benyoussef123, A.Rachadi1 ,H.Zaari 1 1 LaMCScI, physic departement, Faculty of Science, Mohammed V University, Rabat, Morocco 2 Institute of Nanomaterials and Nanotechnology, MAScIR, Rabat, Morocco 3 Hassan II Academy of Science and Technology, Rabat, Morocco. E-mail*/ kassimifatimazahra68@gmail.com ABSTRACT Muliferroic are multifunctionnal materials which exhabit more than one type of ordernig including magnetic, electric and elastic order. While there are numerous technological application for magnetic and ferroelectric. In this work will be focused on the electronic and magnetic properties of the pervoskite RMnO3 where R is rare earth (R=Tb) using ab-initio calculation and Monte Carlo simulation (MCS), Firstly, we calculate the electronic and magnetic properties using the full-potential augmented wave (FP-LAPW) implemented in the wien2ka code, we also present the results of densities of states of two up and down spin polarisations, then we will establish a physical model to describe our system, we calculate the exchange coupling and the crystal filed. Finally, we study Monte Carlo simulation and we will compare these results with the experimental results to prove that this multifarroic exhibit also magneto-caloric coupling and can be used for Magnetic refrigeration. Keywords: muliferoiic, FP-LAPW, Monte Carlo,magntocaloric,Magnetic refrigeration,Wien2ka https://sites.google.com/site/tramp2019marrakech/ mailto:kassimifatimazahra68@gmail.com Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p80 P011 SYNTHESIS OF KESTERITE THIN FILMS: INFLUENCE OF ANNEALING IN VACUUM M. Hamici1*, P. Saint-Grégoire2, H. Far3 1. Dosage Analysis and Characterization Laboratory, EBF department Faculty of Technology, Setif-1 University, Algeria 2. Collaborating Academics, 14 avenue Frédéric Mistral, 34110 Frontignan, France 3. Department of Physics, Exact Sciences and Computer Science Faculty Mohamed Seddik University Ben Yahia – Jijel, Algeria E-mail*/ hemissi_melia@yahoo.fr ABSTRACT In this work, we studied the structural, optical, and electrical properties of the quaternary and ternary compounds of the kesterite structure as a function of the annealing temperature. The chemical solution was an aqueous solution based on copper, zinc, tin and sulfur precursors. The thin layers were deposited on soda lime glass plates by the pneumatic spray method. The product was sprayed onto the glass plates initially put down on a heating plate raised to 380 ° C. The obtained layers were then annealed at 400 ° C and 500 ° C for 20 min in vaccum. We have confirmed the existence of a kesterite phase by XRD. This structure has also been checked by Raman spectroscopy which shows the two peaks characteristic of kesterite. The chemical composition of the samples follows the initial stoichiometry giving ratios between the elements of the compound in agreement with the expected composition. The optical transmission of the layers was in average around 60% for quaternary compounds, and lower for the ternary compounds. The optical gaps were determined to lie between 2.02 eV and 2.21 eV in agreement with results reported by a majority of authors. The found optical and electrical properties are encouraging in the perspective of integration of such layers in photovoltaic devices. Keywords: CZTS, CZS, XRD, thin films, optical transmission, band gap, photovoltaic https://sites.google.com/site/tramp2019marrakech/ mailto:hemissi_melia@yahoo.fr Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p81 P012 PLASMA ELECTROLYTIC OF ZINC: THE FORMATION OF MICRO-ARCS OR SPARKS ON THE ZINC AT HIGH VOLTAGE Khadoudj Guessoum1*, Emmanuel Rocca2, Delphine Veys-Renaux2 1. Faculté de Technologie, Université Abderrahmane Mira, Bejaia DZ 06000, Algeria 2. Institut Jean Lamour-UMR CNRS 7198, Université de Lorraine, BP 70239, Vandoeuvre-lès- Nancy-54506, France. E-mail*/ gueksabrina05@yahoo.fr ABSTRACT For several years, one of the main objectives of many processes is to fulfill the requirements of environmental standards, and to avoid the use of toxic reagents as hexavalent chromium or nickel salts. In this framework, the processes based on electrochemical conversion as anodizing can be interesting alternatives. At low voltage, below the dielectric breakdown of the interface, several processes of zinc anodizing in alkaline media were already studied for anticorrosion properties or photo-catalytic applications. Moreover, many works have been devoted to the knowledge of the zinc oxidation mechanism, especially the dissolution– passivation phenomenon at low potential because of the technical importance of aqueous alkaline batteries made from this metal. At low potential, the anodic layers are mainly constituted by zincite, ZnO, and zinc hydroxide if the alkaline media is at low carbonate concentration. At high voltage, during the dielectric breakdown and the formation of micro- arcs or sparks, the development of ceramic-type coatings seems to be possible because of the high temperature reached in the electric discharges occurring at the “metal/oxide/electrolyte” interface.The aim of this work is to describe the electrochemical behavior of zinc in a large anodic voltage range (until 300 V namely beyond the dielectric breakdown) by using a DC regime. This study focuses on the influence of the KOH concentration and the presence of additives, such as silicates and aluminates. Different in- situ electrochemical measurements in a two-electrode cell allowed a better understanding of the anodizing process with respect to the composition of the “metal/oxide/ electrolyte” interface. The anodized coatings or oxide layers were characterized by different metallographic analyses: scanning electron microscopy equipped with energy-dispersive X- ray spectroscopy, and X-ray diffraction. Keywords: Zinc, micro-arc oxidation (MAO), plasma electrolytic oxidation (PEO). https://sites.google.com/site/tramp2019marrakech/ mailto:gueksabrina05@yahoo.fr Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p82 P013 STRUCTURAL, DIELECTRIC AND IMPEDANCE SPECTROSCOPY ANALYSIS OF LEAD FREE(Ba0,85Ca0,15Zr0,1Ti0,9O3) CERAMICS SYNTHESIZED BY SOL-GEL METHOD S.Khardazia* , D.Mezzanea, Y.Gagoub , M.Amjouda a Laboratoire de la matière condensée et nanostructures LMCN, F.S.T.G. Université Cadi Ayyad, BP 549, Marrakech, Morocco bLaboratoire de physique de la matière condensée LPMC, Université Jules Verne de Picardie, 33 rue Saint-Leu, 80039 Amiens Cédex, France E mail*/ khardazzisaid@gmail.com ABSTRACT In recent decades, there is an increasing attention paid to ferroelectric and ecological materials, both in scientific research and technology developments. In the present work, a lead free ceramics Ba 0,85Ca0,15Zr0,1Ti0,9O3(BCZT) was prepared by sol-gel method. Morphological and structural properties of BCZT were investigated by SEM and XRD technique confirmed by Raman spectroscopy at room temperature, respectively. Dielectric characteristics were analyzed by Impedance spectroscopy. Rietveld refinement indicates the formation of a single phase compound with a tetragonal structure of space group P4mm. The ceramics sintered at 1350°C exhibits a dense microstructure. The dielectric measurements of BCZT were studied as a function of temperature in the frequency range of 100Hz-500 kHz. The variation of dielectric constant (ε’) shows a maximum value of ~4700 at the ferroelectric-paraelectric phase transition (Tc= 64°C). The Diffuse nature of the transition is well described by Santos–Eiras phenomenological model. Impedance spectroscopy analysis over the frequency range of 100Hz to 500 kHz presents mainly grain and grain-boundary contribution above 266°C. Keywords: dielectric materials, sol-gel method, phase transition, diffuse nature, https://sites.google.com/site/tramp2019marrakech/ mailto:khardazzisaid@gmail.com Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p83 P014 UNOCCUPIED ELECTRONIC STRUCTURE OF GRAPHENE DERIVED TWO-DIMENSIONAL SUBSTRATES Younal Ksari1*, Yu-Pu Lin, Luca Giovanelli, Jean-Marc Themlina Aix-Marseille Université, CNRS, IM2NP : UMR 7334, Faculté des Sciences de St-Jérôme, 13397 Marseille, France. e-mail : younal.ksari@im2np.fr Email*/ Younal.ksari@im2np.fr ABSTRACT The possibility of opening a gap in the electronic structure of the two-dimentional (2D) material known as graphene continues to be investigated for the development of nanoelectronics. Another approach consists to further elaborate new 2D materials with original electronic properties. Such 2D materials can be derived from a graphene layer or a functionalized graphene layer. By decomposition of silicon carbide SiC at 1200 °C under ultra-high-vacuum it is possible to obtain several 2D substrates. Depending on the annealing time it is possible to elaborate the so called buffer layer (BLG) also named zero-layer graphene, a monolayer graphene above the BLG, a bilayer graphene above a BLG and so on until full graphitization resulting in a multi-layer graphene substrate. Hydrogenation of a BLG substrate under different temperature conditions allows to obtain two additional substrates called H-BLG and QFSG for quasi free standing graphene, this QFSG being a decoupled monolayer graphene floating above an underlying hydrogenated substrate.All these 2D substrates have distinct electronic behaviour which may be interesting for the development of nano-electronic devices including zero gap seconductor, correlated insulator... Using photoemission an inverse photoemission experiments we have studied the electronic properties of these substrates. We show for example that it is possible to modify these properties by performing nitrogen implantation in mono or bilayer graphene. From the respective properties of the H-BLG and QFSG a route is suggested for the large scale production of graphene based devices [1]. REFERENCES [1] Yu-Pu Lin, Younal Ksari and Jean-Marc Themlin, Hydrogenation of the buffer-layer graphene on 6H-SiC (0001): A possible route for the engineering of graphene-based devices Nanoresearch, 8-3, p. 839-850, 2015 Keywords : graphene, electronic properties, 2D materials, nanoelectronics. https://sites.google.com/site/tramp2019marrakech/ mailto:Younal.ksari@im2np.fr Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p84 P015 HYDROGEN STORAGE IN SOLID FORM Labrousse Jihad1*, A. El kenz and A. Benyoussef123, H.Zaari1 1LaMCScI, physic department, Faculty of Science, Mohammed V University, Rabat Morocco 2Institute of Nanomaterials and Nanothechnology, MAScIR, Rabat, Morocco 3Hassan II Academy of Science and technology, Rabat, Morocco Email*/ jihadlbs@gmail.com ABSTRACT The hopes of using hydrogen as an energy carrier are severely dampened by the fact that there is still no safe, high-density method available for storing hydrogen. We investigate the possibility of storing hydrogen on one of carbon's family ''Graphene" , Recently, several studies on graphene, the one-atom-thick membrane of carbon atoms packed in a honeycomb lattice, have highlighted the potentialities of this material for hydrogen storage and raise new hopes for the development of an efficient solid-state hydrogen storage device. Here we review on-going efforts and studies on functionalized and nanostructured graphene for hydrogen storage and suggest possible developments for efficient storage/release of hydrogen under ambient conditions. We have tried to calculate the storage properties of hydrogen on a graphene sheet by using the pseudo potential quantum espresso and calculate the density of state and band structure by using the GGA aproximation and then we calculated the band energy of the complete system. Keywords: Quantum espresso, Hydrogen storage, Band structure, Density of states, Graphene https://sites.google.com/site/tramp2019marrakech/ mailto:jihadlbs@gmail.com Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p85 P016 EFFECT OF IONIC LIQUIDS AND HUMIDITY ON IONIC CONDUCTIVITY FOR CARBOXYMETHYL CHITIN BASED SOLID POLYMER ELECTROLYTE M. latifia,b, A. Ahmada, H. Kaddamib, N.H. Hassana a Faculty of Science and Technology, School of Chemical Sciences and Food Technology, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor Darul Ehsan, Malaysia. b Cadi Ayyad University, Faculty of Sciences and Technologies, Laboratory of Organometallic and Macromolecular Chemistry, Avenue AbdelkrimElkhattabi, B.P. 549, Marrakech, Morocco. E-mail*/ latifimeriem@gmail.com ABSTRACT Carboxymethyl chitin (CMChit) has the potential to be used as a solid polymer electrolyte (SPE), it gives an ionic conductivity of the order of 10-6 Scm-1 in plain films. 1-Butyl-3- methylimidazolium chloride and 1-Butyl-3-methylimidazolium acetate (BMIM[Ac]), two types of ionic liquids (ILs) were added to the CMChit-SPE to improve the ionic conductivity. The films were prepared by solution casting method then conditioned in different atmospheres of different relative humidity. The Films prepared were characterized using Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), Field-emission scanning electron microscopy (FESEM-EDX), Differential scanning calorimetry (DSC), Electrochemical Impedance Spectroscopy (EIS) and linear scanning voltammetry (LSV). In controlled humidity, BMIM[Cl] showed an optimum of ionic conductivity in the order of 10-4 S cm-1 and electrochemical stability of 1.93 V, by the addition of only 30wt. %. On the other hand, for BMIM[Ac], the optimum was reached with the addition of 40 wt.% for the same order of ionic conductivity and electrochemical stability of 2.93 V. Keywords: carboxymethyl chitin, solid polymer electrolyte, ionic liquids, humidity. https://sites.google.com/site/tramp2019marrakech/ mailto:latifimeriem@gmail.com https://www.sigmaaldrich.com/catalog/product/aldrich/94128?lang=en®ion=US https://www.sigmaaldrich.com/catalog/product/aldrich/94128?lang=en®ion=US Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p86 P017 PULSE-POWER INTEGRATED-DECAY TECHNIQUE FOR THE MEASUREMENT OF THERMAL CONDUCTIVITY OF NANOFLUID GRAPHENE IN GLYCEROL/WATER M. Lotfi1,2, A. Bakak1, A. Sellam1, D. Lahboub1, A. Koumina1, R. Heyd1 1Equipe de Physique des Nanostructures, Cadi Ayyad University, ENS Marrakesh, Morocco 2 Laboratoire de Nanomatériaux pour l’énergie et l’environnement (LN2E), Cadi Ayyad University FSSM, Morocco E mail*/ lotfimohamed_1999@yahoo.fr ABSTRACT We present experimental results of the thermal conductivity of nanofluid prepared by dispersing nanoparticles of graphene in glycerol/water at various concentrations in mass fraction. The measurements have been performed by the pulse-power integrated-decay technique for the measurement of thermal conductivity of nanofluid. A self-heated thermistor probe is used to deliver heat and also to measure the temperature response. Our experimental technique allows a very accurate determination of the enhancement in the thermal conductivity of the fluids due to the presence of dispersed nanoparticles. Measured enhancements compare well with some of the values published so far in the literature. Keywords: nanofluid, graphene, glycerol, thermal conductivity. https://sites.google.com/site/tramp2019marrakech/ mailto:lotfimohamed_1999@yahoo.fr Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p87 P018 MODELING THE ADSORPTION OF HYDROGEN IN THE METAL ORGANIC FRAMEWORK (MOF5, CONNECTOR): Z(C8H4O4)3 M. EL Kassaoui*, A. Benyoussef, A. El Kenz, Faculty of Sciences, Mohammed V University, Rabat / Laboratory of Condensed Matter and Interdisciplinary Sciences E-mail*/ psmajid0@gmail.com / 0615293933 ABSTRACT Metal-organic frameworks (MOFs) are thought to be a set of promising hydrogen storage materials; The electronic structure of porous metal-organic framework-5 MOF-5 of composition Zn4O 1,4- benzenedicarboxylate was investigated with an ab initio method. The purpose of this work allowed us to study the structural stability, the electrical properties of the MOF-5 type organometallic materials [Zn4O(C8H4O4)3] and their Connector (metal oxide centers) to Zinc base were studied using the first calculations based on the functional density theory (DFT) and using the Quantum Espresso code and the PBE-GGA approximation. With determination of adsorption energy to contribute to a better understanding of the fundamental interactions of H2 with MOF-5. The adsorption energy of the hydrogen molecule in MOF-5 was studied taking into account the favorable adsorption sites (Metallic, Carboxylic and Cyclic) and orientations (vertical, horizontal, inclined) with the energy of Coupling based on the calculation of the first and second adsorption sites. In addition, the interaction between the hydrogen molecule and MOF-5 is very stable and more adsorption in the organic part (Cyclic site). Keywords: DFT; Hydrogen storage; Metal organic framework; Adsorption energy https://sites.google.com/site/tramp2019marrakech/ mailto:psmajid0@gmail.com Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p88 P019 STRUCTURAL AND MICROSTRUCTURAL ANALYSIS OF ECOLOGICAL AND NANOSTRUCTURED BCZT THIN FILMS Hanane Mezzourh1,2, Yassine Ben Cherifi1, M’barek Amjoud1, Daoud Mezzane1, Mimoun El Marssi2, Igor A. Luk'yanchuk2 1Laboratory of Condensed Matter and Nanostructures, Cadi Ayyad University, Marrakesh, 40000, Morocco 2Laboratory of Condensed Matter Physics, University of Picardy, Amiens, 80039, France E-mail*/ mezzourhhanane@gmail.com ABSTRACT Today, energy storage and environmental protection are the major challenges; therefore, researches have been carrying out studies in order to develop environmentally- friendly nanomaterials with high energy density. In this study, we have developed thin films of Ba0,85Ca0,15Ti0,9Zr0,1O3 (BCZT) by sol-gel via spin-coating on Pt/Ti/SiO2/Si substrates; and heat-treated at 750°C/30min. The SEM micrographs showed that the six-layers BCZT films are dense and homogeneous and the XRD reveled the presence of single perovskite phase at room temperature. Likewise, in order to prepare BCZT nanorods thin films, firstly, uniform and homogeneous TiO2 nonorods have grown on FTO substrates via the hydrothermal process. Then, Ca ions were added to the rutile phase of TiO2 nonorods to form CaTiO3 (CT) perovskite phase confirmed by X-ray diffraction analysis. In a last step, this CT perovskite nonorods will be doped by Ba and Zr ions to obtain BCZT nanostrctured thin film that is a potential candidate for energy storage application. Keywords: BCZT, energy storage, hydrothermal, nanorods, sol-gel, spin-coating. https://sites.google.com/site/tramp2019marrakech/ mailto:mezzourhhanane@gmail.com Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p89 P020 CURED CUTTLEBONE/CHITOSAN-HEATED CLAY COMPOSITES: MICROSTRUCTURAL CHARACTERIZATION AND PRACTICAL PERFORMANCES Abdellah Mourak*, Mohamed Hajjaji, Abdelhakim Alagui Laboratoire de Physico-chimie des Matériaux et Environnement, Faculté des Sciences Semlalia, Université Cadi Ayyad, B.P. 2390, Av. Pce My Abdellah, 40001, Marrakech, Morocco Email*/ Abdellah.mourak@edu.uca.ac.ma ABSTRACT Clay-based materials composed of geopolymers and natural fibbers, among others, could be suitable composites for building construction. So, in this study, composites of a heated kaolinitic-illitic clay and cuttlebone or chitosan (up to 10 mass%) were etched with a NaOH solution (6 M), shaped as briquettes and cured at 83 °C for up to 30 days. The microstructure of the cured composites was investigated, and some of their practical performances were evaluated. The results showed that metakaolinite and illite - to some extent-, and a portion of Na+ ions were involved in the formation of zeolite (chabazite) and Na-carbonate respectively. Moreover, layers of cuttlebone or chitosan were built up around the clay particles, and the thick layers developed in the cuttlebone and in the chitosan-rich composites affected differently the zeolization process. Chitosan versus cuttlebone favoured zeolization by facilitating the ions mobility, and the illite reactivity. By referring to the mechanical/physical properties of the cured NaOH-etched heated clay, the bending and the compressive strengths of the cured composites as well as their water absorption increased by two-to three times. The strengthening of the composites was related mainly to the reduction of porosity (up to 40% for the cuttlebone-rich composite). Keywords: Heated Clay-Cuttlebone-Chitosan-Alkali-activation-Microstructure https://sites.google.com/site/tramp2019marrakech/ mailto:Abdellah.mourak@edu.uca.ac.ma Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p90 P021 COMPOSITES WITH FERROELECTRIC PROPERTIES IN As2S3-Sb2S3-SbI3 SYSTEM Mykaylo O.A.1, Rubish V.M.1, Gasinets S.M.1 , Hreshchuk O.M.2, Makar L.I.1 , Pisak R.P.1, Rizak I.M.1, Solomon A.M.3, Yukhymchuk V.O.2, Yasinko T.I.1 1Institute for Information Recording, NAS of Ukraine, 4, Zamkovi skhody St.,88000, Uzhgorod, Ukraine, center.uzh@gmail.com 2V. E. Lashkaryov Institute of Semiconductor Physics, NAS of Ukraine, Prospekt Nauky, 41, Kyiv 03028, Ukraine 3Institute of Electron Physics NAS of Ukraine, 21 Universytetska St., 88017, Uzhgorod, Ukraine Email*/ oksanamykaylo@gmail.com ABSTRACT Studies of nanoscale ferroelectric materials are important in the view of both fundamental and practical aspects. The experience of obtaining crystallites in amorphous matrices, especially well known for II-VI chalcogenides, also inspires the fabrication and investigation of glass-embedded nanoscale ferroelectric chalcogenidebased materials which are interesting with respect to size- related effects and possible applications. In our recent studies we present the technology of synthesis and results of investigations of glasses in new As2S3-Sb2S3-SbI3 system.The glasses of As2S3- Sb2S3-SbI3 system with content As2S3 45, 40, 35 and 30 mol.%, Sb2S3 – 27.5, 30, 32.5, 35 mol.% and SbI3 – 27.5, 30, 32.5, 35 mol.% were prepared by vacuum melting method (~0.01 Pa) of the relevant mixture of As2S3, Sb2S3 and SbI3 components, preliminary synthesized from high-purity elemental substances. Glassy As2S3 was obtained by cooling a homogenized for 48 h melt from 780 K in air. Polycrystalline Sb2S3 and SbI3 were obtained by slow cooling the homogenized for 72 and 12 h melts from 900 and 445 K, respectively, to room temperature. During the synthesis, we applied the stepwise increase in temperature. The melts were periodically mixed. The melts of As2S3-Sb2S3-SbI3 system were homogenized at 820-850 K for 24-36 h. Cooling of the melts was carried out into cold water. Nanoheterogenous structure of glasses in As2S3-Sb2S3-SbI system established on the basis of Raman spectra investigations. Their structural network is formed by only binary structural groups with heteropolar bonds (AsS3, SbS3, SbI3, AsI3) and contains small amount fragments with S-S bonds. Raman spectra of (As2S3)30(Sb2S3)35(SbI3)35 glasses annealed at 348 K for 48h and at 328 K for 2h clearly exhibit distinct peaks at 55, 72, 113, 139 and 320 cm-1. All these peaks are characteristic for crystalline SbSI Raman spectra measured at 300 K into different scattering configurations. This fact is a good agreement with the earlier data reporting on the annealing induced crystallization of SbSI phase from (As2S3)100 x(SbSI)x and (Sb2S3)100-x(AsSI)x glasses. Keywords: nanomaterials, chalcogenides, spectroscopy, glasses, ferroelectrics. https://sites.google.com/site/tramp2019marrakech/ mailto:center.uzh@gmail.com mailto:oksanamykaylo@gmail.com Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p91 P022 EFFECTS OF VOLUME CONCENTRATION AND TEMPERATURE ON THE THERMAL AND RHEOLOGICAL PROPERTIES OF ALUMINUM OXIDE /WATER NANOFLUID Omar Ouabouch1, Mounir Kriraa2, Mohamed Lamsaadi1 1Laboratory of Flows and Transfers Modelling, Sultan Moulay Slimane University, Faculty of Sciences and Technologies, B.P. 523, Beni-Mellal, Morocco. 2Laboratory of Engineering, Industrial Management and Innovation, Faculty of Sciences and Techniques, Hassan 1st University, Settat, Morocco. E-mail*/ ouabouch.omar@gmail.com ABSTRACT Nanofluids are colloidal solutions composed of Nano-sized particles suspended in a liquid that surprising thermal properties have been the subject of intense research over the past decade. This work aims to study the influence of the temperature and volume concentration of nanoparticles dispersed in a base fluid on the thermal conductivity and dynamic viscosity of the nanofluid in homogeneous suspension Aluminum oxide / water, without surface pre- treatment. Keywords: Nanofluid, Nanoparticles, Thermal conductivity, Dynamic viscosity. https://sites.google.com/site/tramp2019marrakech/ mailto:ouabouch.omar@gmail.com Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p92 P023 ELECTRIC AND THERMAL INSULATOR GLASS-CERAMIC BASED ON CORDIERITE FROM COAL FLY ASH Kamal Tabita*, Hanaa Hajjoua, Mohamed Waqifa, Latifa Saâdia a Nanostructures and Condensed Materials Laboratory (LMCN), Faculty of Science and Technology, Cadi Ayyad University, BP 549, Marrakech, Morocco. E-mail*/ tabit.kamal7@gmail.com ABSTRACT Cordierite-based glass-ceramics have been successfully produced from coal fly ash (80.74 wt.%), magnesium hydroxide, and aluminum hydroxide. The phase crystallization was followed by thermogravimetric and differential thermal analysis, X-ray diffraction, Fourier transform infrared, and scanning electron microscope. The properties of sintered materials in the range 900-1200 °C such as apparent porosity, bulk density, and mechanical parameters were measured. The results show that the increase in firing temperature from 900 °C to 1200°C induces the transformation of coal fly ash component and magnesium oxide to -cordierite with high purity. The formation of cordierite at 1200 °C involves the densification of ceramic body and the decrease in apparent porosity to 22 %. The obtained cordierite-based ceramic exhibit a thermal conductivity (1.12 W/m.°K) and compressive strength (128 MPa), which promote its application as a thermal insulator. Also, the dielectric constant ( = 9.5 at 1MHz) measurement shows that the obtained ceramic can be useful as insulator for electric and electronic applications. Keywords: Cordierite; Coal fly Ash; Thermal insulator; Dielectric https://sites.google.com/site/tramp2019marrakech/ mailto:tabit.kamal7@gmail.com Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p93 P024 STUDY OF THE EFFECT OF COMPOSITION AND TEMPERATURE ON THE STRUCTURE STABILITY AND OPTICAL PROPERTIES OF NEW TELLURIUM BASED DOUBLE PEROVSKITES Youssef Tamraoui1,2,*, F.El bachraoui1,2, F. Mirinioui2, P. Lazor3, Wenge Yang4,5, J. Alami2, and Bouchaib Manoun1,2 1 Univ Hassan 1er, Laboratoire Rayonnement-Matière et Instrumentation, Faculty of Sciences and Technology Settat,University Hassan 1st Morocco. 2 Materials Science and Nano-engineering Department, Mohammed VI Polytechnic University, Ben Guerir, Morocco. 3 Department of Earth Sciences, Uppsala University, SE-752 36, Uppsala, Sweden 4 High Pressure Science and Technology Advanced Research (HPSTAR), Shanghai 201203, P.R. China 5 High Pressure Synergetic Consortium (HPSynC), Geophysical Laboratory, Carnegie Institution of Washington, Argonne, IL 60439, USA E-mail*/ Youssef.tamraoui@um6p.ma ABSTRACT The continual development of technology has caused a depletion of all kind of energy resources and climate change with non-predictable consequences. Extensive efforts to change to renewable energies and implementing new and alternatives energy concept are required. Perovskite materials have shown potential in the energy field being one of the most promising materials, such as hybrid perovskites for solar cells, solid oxide fuel cells and refrigeration technologies[1,2]. Double perovskite structure typically has the chemical formula A2BB’O6. Depending on the elements residing at A and B sites, different crystalline structures are possible, resulting in specific electronic and magnetic properties. Fundamental understanding of the structure stability and phase transitions of these materials, under different synthesis conditions, is very important for optimizing the next generation applications-tailored energy conversion devices. In the present study, the mechanisms of self-doping together with continuous composition modulation in the Ba3-xSrxTeO6 (0≤x≤3) system are investigated. For x≤ 1, the exceeded Sr substitutes Ba on the B-site as Ba2(Ba1-xSrx)TeO6; while for x>1, Sr substitutes partial Ba at A-site as (Ba2-ySry)SrTeO6 (here, y=x-1). The structure stability and phase transition of compounds are studied using X-ray diffraction, and Raman spectroscopy at ambient and elevated temperatures. At ambient temperature, a systematic structure transition (I41/a → R3m → R3 → R3m → C1) was determined, with x increasing from 0 to 3. At elevated temperatures (up to 570 °C) all structures tend to merge to the single cubic phase Fm3m, indicating an expanded bonding length and a greater atomic thermal motion. The optical properties of the Ba3-xSrxTeO6 (0≤x≤3) system were part of the paper objective in investigating the substitution effect on the optical response. The optical properties of the compounds were significantly dependent to the symmetry change in the system and a shrink in the band gap energy values was observed as the amount of the strontium increase, at some specific amount of the substitution, some unusual behaviour were observed. REFERENCES: 1. Nielsen KK, Engelbrecht K, Andersen K. 2012;(May 2014). doi:10.1063/1.3695338 2. Tamraoui Y, Manoun B, Mirinioui F, et al. J Mol Struct. 2017;1131. https://sites.google.com/site/tramp2019marrakech/ mailto:Youssef.tamraoui@um6p.ma Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p94 P025 A COMPARATIVE STUDY OF STRUCTURAL AND DIELECTRIC PROPERTIES IN LEAD-FREE BaTi0,89Sn0,11O3 CERAMICS SYNTHESIZED BY SOLID STATE AND SOL-GEL Y. Hadouch1*, D. Mezzane1, M. Amjoud1, E. Choukri1, L. Hajji1, S. Merselmiz1, S.Ben Moumen1, S. Belkhadir1, H. Mezzourh1,2 1Laboratory of Condensed Matter and Nanostructures/ Cadi Ayyad University 2Laboratory of Condensed Matter Physics, University of Picardy, Amiens, 80039, France E-mail*/hadouch.younes@gmail.com ABSTRACT Ferroelectric barium stannate titanate (BTSn) possesses a high dielectric constant coupled with the possibility of shifting the Curie temperature toward room temperature by changing the Sn content. Therefore, it is an interesting material for applications such as capacitor, bolometer, actuator and microwave phase shifter. BaTi0,89Sn0,11O3 ceramics were synthesized by solid state method and sol-gel in order to realize a comparative study of two compounds and to establish a correlation between their structures and their dielectric properties. The crystalline structure, the unit cell parameters and the phase composition were ascertained by the Rietveld refinement. The average grain size estimated from the microstructure was found to be about 1.5 μm for the solid-state derived ceramic and 4-14 μm for the sample prepared by sol-gel method, respectively. Complex impedance spectroscopy results revealed a classical ferroelectric behavior and diffuse nature of the ferroelectric-paraelectric phase transition in each of the two samples, and highlighted the effect of grain size and density on the dielectric properties: permittivity, dielectric losses and conductivity. Keywords: BTSn, solid state, sol-gel, structural properties, dielectric properties, impedance spectroscopy, ferroelectricity, phase transition temperature. https://sites.google.com/site/tramp2019marrakech/ mailto:hadouch.younes@gmail.com Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p95 P026 TiO2 PHOTOCATALYSIS: HYDROGEN PRODUCTION F.Mezzat *1, H,Zaari1, A.El kenz1, A. Benyoussef2. 1LaMCScI, Faculty of Sciences, Mohammed V University of Rabat, 2Institute for Nanomaterials and Nanotechnologies, MAScIR, Rabat, Morocco 3Hassan II Academy of Science and Technology, Rabat, Morocco E-mail*/ mezzat.fatimazahra@gmail.com ABSTRACT TiO2 is extensively used in a variety of applications for photocatalysis and hydrogen evolution. The development of new materials, is strongly required to provide enhanced performances with respect to the photocatalytic properties and to find new uses for TiO2 photocatalysis.To produce the hydrogen by using solar energy, we have been studied the band gap, and optical properties of TiO2 compound, which is considerate one of the most promising photocatalyst used of water splitting.For this purpose, the doping of TiO2 has been studied with non- metallic elements and the use of one, two and three dimensional TiO2 as a photocatalyst. The aims of this research are studying the crystal structure, the optical properties and the photocatalytic activity of TiO2. Keywords: Photocatalysis, Hydrogen, Visible-light, TiO2, Photocatalyst https://sites.google.com/site/tramp2019marrakech/ mailto:mezzat.fatimazahra@gmail.com Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p96 P027 STUDY OF THE ELECTRONIC STRUCTURE AND MAGNETIC PROPERTIES OF MATERIAL DyMn2O5 USING AB-INTIO AND MONTE- CARLO SIMULATION Y. Kaddar 1*, H. ZAARI1, A. Rachadi1, A. EL KENZ1, A.BENYOUSSEF1,2,3 1 Laboratoire de Matière Condensée et Sciences Interdisciplinaires, Faculty of Sciences, Mohammed V University of Rabat, Morocco 2 Institute of Nanomaterials and Nanotechnology, MAScIR, Rabat, Morocco 3 Hassan II Academy of Science and Technology, Rabat, Morocco E-mail*/ younesskaddar@gmail.com ABSTRACT We use Ab-inition methods with the density functional theory (DFT) to study the electronic and magnetic proprieties of multiferioc DyMn2O5.Our goals are to determine the band gap the magnetic anisotropy and exchanges couplings between the magnetic ions. The density of states show an semiconductor behavior in the ferrimagnetic state of DyMn2O5 at Fermi level and there is a small band gap, confirming the experimental fact that DyMn2O5 as a typical semiconductor. The exchange couplings between the magnetic ions were calculated using the Heisenberg model by including only the nearest neighbor interactions, all by selecting stable magnetic configurations. The magnetic properties of the ferrimagnetic DyMn2O5 compound were studied using Monte Carlo simulations. https://sites.google.com/site/tramp2019marrakech/ mailto:younesskaddar@gmail.com Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p97 P028 COMPARATIVE STUDY OF THE SOLID STATE REACTION OF Ni/GaAs AND Ni/InAs S. Rabhia,b*, C. Perrin-Pellegrinoa, M.C. Benoudiab , K. Hoummadaa a Institut Matériaux Microélectronique Nanosciences de Provence (IM2NP), Aix-Marseille Université (AMU), France b Laboratoire Mines Métallurgie Matériaux (L3M), Ecole Nationale Supérieure des Mines et de la Métallurgie (ENSMM), Annaba, Algérie. E-mail*/ Selma.rabhi@ensmm-annaba.dz ABSTRACT Recently, research has turned to III-V semiconductors for the development of future electronic and optoelectronic devices at the nanoscale [1]. The semiconductor III-V InGaAs with well-defined proportions is the most studied to substitute Si on MOSFET technology [2]. With the same lattice parameter, it can be deposited on Si substrate. Good electric contact between metal and III-V still remains a challenging issue for several applications. In one possible integration flow, the fabrication of these contacts is based on the reactive diffusion process in the same way as with Si substrates allowing to improve the ohmic resistance contact between III-V semiconductors and metal [3-4]. However, as a first step to simplify the understanding of the different phenomena that can occur the study of different manufacturing processes has been focused on GaAs and InAs rather than on InGaAs. For this, we have studied the nature and the sequence of the phases formed for the two systems Ni / GaAs and Ni / InAs, where Ni is deposited by sputtering. We have used in this study X- Ray Diffraction in-situ and ex-situ with different diffractometers (two circles and four circles), Scanning and Transmission Electronic Microscopies. The solid-state reaction between a Ni film and GaAs and InAs substrates during annealing (below 400 °C) gives a ternary intermetallic as the first phase formed for two systems, they are in epitaxy with the substrate and have the same hexagonal structure. This phases are Ni3GaAs [5] and Ni3InAs phases. Moreover, the texture of the Ni3GaAs phase is different from the Ni3InAs phase. At high temperatures (above 400 ° C), we observe for both systems the presence of new phases. These are hexagonal and cubic structures for the Ni / InAs system and just one phase hexagonal for the Ni/ GaAs. REFERENCES [1] P. Srinivasan and al, Graphene, Ge/III-V, and Emerging Materials for Post-CMOS Applications 2, ECS Transa, 2010. [2]S. Oktyabrsky, Y. Peide, Fundamentals of III-V Semiconductor MOSFETs, Springer, 2010. [3]S. Oda, D.K. Ferry, Nanoscale Silicon Devices, CRC Press, 2017. [4]D.B. Shiban Tiku, III-V Integrated Circuit Fabrication Technology, CRC Press, 2016. [5] S. Rabhi and al, Scr. Mater. 141 (2017) 28–31. Keywords: Ni/GaAs, Ni/InAs, epitaxy, Ni3GaAs, Ni3InAs, reactive-diffusion, formation kinetics, in-situ structural characterization. https://sites.google.com/site/tramp2019marrakech/ mailto:Selma.rabhi@ensmm-annaba.dz Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p98 Index adiabatic .......................................................................................................................................... 15, 86 alloys ....................................................................................... 2, 13, 15, 24, 25, 26, 35, 39, 40, 51, 54, 87 anisotropy ................................................................................................................................ 24, 26, 116 atomic ..................................................................................................................... 13, 31, 53, 59, 68, 112 bandgap ........................................................................................................................................... 39, 61 capacity................................................................................................................................ 46, 57, 65, 81 catalysis ..................................................................................................................................... 42, 68, 76 ceramics ........................................ 19, 22, 27, 32, 44, 45, 52, 53, 55, 63, 66, 67, 78, 85, 92, 97, 111, 113 chemistry .......................................................................................................................... 7, 13, 48, 76, 85 coercive ............................................................................................................................... 26, 58, 70, 81 concentrations .............................................................................................................. 39, 57, 90, 91, 102 conductivity ...................................................................... 7, 27, 44, 55, 81, 101, 102, 103, 110, 111, 114 crystal ........................................................................... 15, 17, 26, 31, 32, 33, 52, 57, 79, 86, 87, 93, 115 depolarizing ........................................................................................................................................... 11 dielectric ....... 15, 20, 22, 27, 36, 41, 44, 46, 50, 52, 58, 63, 64, 65, 66, 73, 74, 78, 79, 81, 83, 85, 96, 97, 111, 113, 114 diffraction .......... 32, 38, 44, 51, 52, 53, 56, 58, 59, 62, 70, 72, 76, 79, 83, 90, 92, 96, 101, 105, 111, 112 distribution ............................................................................................................... 10, 11, 31, 38, 45, 48 doping ........................................................................................... 30, 51, 55, 64, 67, 70, 89, 91, 112, 115 elastic ........................................................................................................................ 21, 24, 27, 45, 65, 93 ELECTROCALORIC ...................................................................................................................... 19, 52, 58 electrode ..................................................................................................................................... 9, 56, 96 emission ............................................................................................................................. 24, 34, 76, 101 Environment .................................................................................................................................... 67, 83 Epitaxial ................................................................................................................................................. 32 ferroelectric ..... 11, 15, 19, 20, 22, 27, 30, 32, 36, 50, 52, 53, 58, 60, 64, 66, 73, 79, 85, 93, 97, 108, 113 frequency................................................................................................ 10, 26, 32, 41, 55, 79, 85, 92, 97 gap .............................................................................................. 40, 59, 68, 83, 90, 95, 99, 112, 115, 116 growth .................................................................................................................. 7, 24, 31, 33, 39, 55, 84 heterostructures .................................................................................................................. 32, 60, 61, 73 hysteresis .................................................................................................................. 22, 41, 44, 52, 61, 66 impedance ...................................................................................................... 44, 67, 85, 92, 97, 113, 114 irradiation .............................................................................................................................................. 11 lead ............................................................. 13, 19, 20, 22, 36, 39, 50, 52, 56, 58, 66, 79, 81, 84, 97, 113 magnetic .......................................................................................................................................... 26, 68 memory ..................................................................................................................................... 15, 27, 86 metallic .................................................................................................................................... 10, 31, 115 metals ........................................................................................................................................ 17, 25, 53 microstructure ............................................................ 23, 25, 39, 43, 48, 51, 54, 64, 66, 67, 97, 107, 113 nanodomains ......................................................................................................................................... 73 Nanomaterials ........................................................................ 2, 11, 60, 64, 68, 70, 87, 93, 100, 115, 116 nanoregions ........................................................................................................................................... 64 nanostructured ............................................................................................................................ 100, 105 Nanostructures ................................................................................... 3, 5, 44, 52, 72, 102, 105, 111, 113 nanotubes ................................................................................................................................................ 7 nanowires ................................................................................................................................................ 8 https://sites.google.com/site/tramp2019marrakech/ Third International Symposium Nanomaterials: Microstructure and Properties –TRAMP19– https://sites.google.com/site/tramp2019marrakech/ OAJ Materials and Devices, Vol 4 #2, 2912 (2019) – DOI: 10.23647/ca.md20192912 p99 organic ............................................................................................................ 43, 50, 61, 76, 84, 103, 104 paraelectric ................................................................................................................... 27, 52, 73, 98, 113 paramagnetic ......................................................................................................................................... 27 passivation ............................................................................................................................................. 96 permittivity ................................................................................................................... 44, 52, 58, 81, 114 PEROVSKITE ..................................................................................................................................... 27, 68 photovoltaic .................................................................................................................................... 83, 95 polar .................................................................................................................................... 27, 32, 64, 73 polarization ................................................................................................... 11, 27, 41, 50, 60, 66, 78, 79 Raman ......................................................................... 22, 32, 33, 38, 44, 58, 64, 85, 92, 95, 97, 108, 112 relaxor ................................................................................................................................................... 15 semiconductor ................................................................................................ 31, 39, 51, 53, 61, 116, 117 simulation ................................................................................................... 45, 60, 61, 62, 75, 87, 93, 116 sol-gel ............................................................................................... 50, 63, 67, 90, 91, 97, 105, 113, 114 spectra .................................................................................................................... 32, 64, 70, 83, 92, 108 spectroscopy ... 32, 33, 38, 44, 52, 58, 63, 67, 72, 76, 79, 80, 85, 92, 95, 96, 97, 101, 109, 112, 113, 114 spin ................................................................................................................... 27, 29, 43, 68, 90, 93, 105 storage ........................................ 9, 11, 17, 18, 22, 36, 41, 44, 45, 56, 68, 78, 79, 81, 100, 103, 104, 105 strain .................................................................................................................................... 10, 24, 25, 29 structural .. 7, 17, 22, 25, 27, 29, 31, 32, 35, 38, 44, 45, 56, 57, 59, 67, 68, 70, 73, 78, 79, 81, 83, 85, 89, 90, 91, 95, 97, 103, 105, 108, 113, 114, 117 structure7, 9, 17, 21, 22, 23, 24, 29, 30, 31, 33, 44, 45, 50, 52, 53, 54, 55, 56, 62, 64, 66, 73, 76, 79, 83, 84, 90, 92, 95, 97, 99, 100, 103, 108, 112, 113, 115, 117 substitution ...................................................................................................... 17, 22, 52, 70, 79, 92, 112 substrate ............................................................................................... 21, 29, 33, 39, 42, 53, 73, 99, 117 superlattices .............................................................................................................................. 11, 32, 73 susceptibility .......................................................................................................................................... 73 symmetry ............................................................................................................................................. 112 Synthesis ............................................................................................................................................ 2, 61 Thin ................................................................................................................................... 2, 31, 84, 90, 91 transition .................................... 15, 17, 23, 24, 25, 27, 30, 50, 52, 58, 64, 68, 79, 92, 98, 112, 113, 114 Transmission ............................................................................................................................ 14, 42, 117 vibrational ............................................................................................................................................. 38 https://sites.google.com/site/tramp2019marrakech/ Slide 1