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Multiferroic materials attracted a lot of attention in recent years because of their significant scientific interest and technological applications. The multiferroic core/shell powders have a better connectivity between the phases, resulting in superior dielectric and magneto electric properties. In this study, the influence of preparation condition on structure and properties of BaTiO3/α-Fe2O3 core/shell composite materials was examined. The five samples were obtained by varying synthesis conditions, such as synthesized method (co-precipitation and sonochemical method) and pH values of solution. XRD and Raman spectroscopy analyses were performed in order to determine phase composition and structural changes within samples. Morphology modifications were examined by SEM and EDS analyses. Finally, effect of structural and microstructural changes on magnetic and electrical properties was detected and explained.


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Synthesis and characterization of BaTiO3/α-Fe2O3 core/shell structure

Show Author's information Suzana FILIPOVIĆa( )Vera P. PAVLOVIĆbMiodrag MITRIĆcSteva LEVIĆdNebojša MITROVIĆeAleksa MARIČIĆeBranislav VLAHOVIĆf,gVladimir B. PAVLOVIĆa
Institute of Technical Sciences of Serbian Academy of Sciences and Arts, Knez Mihailova 35/IV, 11000 Belgrade, Serbia
Faculty of Mechanical Engineering, University of Belgrade, Kraljice Marije 16, 11000 Belgrade, Serbia
"Vinča" Institute of Nuclear Sciences, University of Belgrade, Mike Petrovića Alasa 12-14, 11000 Belgrade, Serbia
Faculty of Agriculture, University of Belgrade, Nemanjina 6, 11080 Zemun, Belgrade, Serbia
Faculty of Technical Sciences Čačak, University of Kragujevac, Svetog Save 65, 32000 Čačak, Serbia
North Carolina Central University, Durham, NC, USA
NASA University Research Center for Aerospace Device Research and Education and NSF Center of Research Excellence in Science and Technology Computational Center for Fundamental and Applied Science and Education, NC, USA

Abstract

Multiferroic materials attracted a lot of attention in recent years because of their significant scientific interest and technological applications. The multiferroic core/shell powders have a better connectivity between the phases, resulting in superior dielectric and magneto electric properties. In this study, the influence of preparation condition on structure and properties of BaTiO3/α-Fe2O3 core/shell composite materials was examined. The five samples were obtained by varying synthesis conditions, such as synthesized method (co-precipitation and sonochemical method) and pH values of solution. XRD and Raman spectroscopy analyses were performed in order to determine phase composition and structural changes within samples. Morphology modifications were examined by SEM and EDS analyses. Finally, effect of structural and microstructural changes on magnetic and electrical properties was detected and explained.

Keywords:

ceramics, electronic materials, magnetic materials, Raman spectroscopy, X-ray diffraction (XRD), ferroelectricity
Received: 17 July 2018 Revised: 03 October 2018 Accepted: 22 October 2018 Published: 13 March 2019 Issue date: March 2019
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Publication history

Received: 17 July 2018
Revised: 03 October 2018
Accepted: 22 October 2018
Published: 13 March 2019
Issue date: March 2019

Copyright

© The author(s) 2019

Acknowledgements

This research was performed within the project No. 172057 financed by the Ministry of Education, Science and Technological Development of the Republic of Serbia and NSF CREST (HRD-0833184), NASA (NNX09AV07A) and NSF-PREM1523617 awards.

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