Studies of Thermal, Impedance and Magnetic Properties of (Bi1/2Na1/2)(Fe2/3W1/3)O3 Multiferroics
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- 作者：Suhel Ahmed ; Subrat Kumar Barik
- 关键词：Ceramics ; x ; ray diffraction ; impedance spectroscopy ; dielectric properties ; magnetic properties
- 刊名：Journal of Electronic Materials
- 出版年：2017
- 出版时间：February 2017
- 年：2017
- 卷：46
- 期：2
- 页码：1030-1040
- 全文大小：
- 刊物类别：Chemistry and Materials Science
- 刊物主题：Optical and Electronic Materials; Characterization and Evaluation of Materials; Electronics and Microelectronics, Instrumentation; Solid State Physics;
- 出版者：Springer US
- ISSN：1543-186X
- 卷排序：46
文摘
A polycrystalline sample of (Bi1/2Na1/2)(Fe2/3W1/3)O3 was synthesized by high-temperature solid-state reaction technique. Calcination temperature and thermal stability of the material were analyzed by thermogravimetric analysis. X-ray diffraction analysis reveals a phase transformation from rhombohedral to orthorhombic due to Na and W co-doping in BFO. Electrical properties of the material were measured in a wide temperature range of 30–450°C, at different frequencies (100 Hz–1 MHz). Dielectric study revealed that the prepared material had a Neel temperature at 325°C. Direct current conductivity was found to obey the Arrhenius relationship. The value of activation energy was found to be 0.67 eV for the grain (175–450°C) and 0.94 eV for the grain boundary (200–450°C). The enhanced magnetic property of the synthesized material was evaluated from the magnetization–magnetic field loop study.