Synthesis and characterization of BaTiO_3/α-Fe_2O_3 core/shell structure

作     者：Suzana FILIPOVI? Vera P.PAVLOVI? Miodrag MITRI? Steva LEVI? Neboj?a MITROVI? Aleksa MARI?I? Branislav VLAHOVI? Vladimir B.PAVLOVI? 

作者机构：Institute of Technical Sciences of Serbian Academy of Sciences and Arts Faculty of Mechanical Engineering University of Belgrade "Vin?a" Institute of Nuclear Sciences University of Belgrade Faculty of Agriculture University of Belgrade Faculty of Technical Sciences ?a?ak University of Kragujevac North Carolina Central University 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 

出 版 物：《Journal of Advanced Ceramics》 (先进陶瓷（英文）)

年 卷 期：2019年第8卷第1期

页      面：133-147页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：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 

主　　题：ceramics electronic materials magnetic materials Raman spectroscopy X-ray diffraction(XRD) ferroelectricity 

摘      要：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 BaTiO_3/α-Fe_2 O_3 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.