Effect of Ni2+ Substitution on the Structural, Magnetic, and Dielectric Properties of Barium Hexagonal Ferrites (BaFe12O19)
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- 作者：Muhammad Asif Rafiq ; Moaz Waqar ; Talha Ahmed Mirza…
- 关键词：Barium hexaferrites ; conventional solid state route ; Ni substitution ; magnetic properties ; dielectric
- 刊名：Journal of Electronic Materials
- 出版年：2017
- 出版时间：January 2017
- 年：2017
- 卷：46
- 期：1
- 页码：241-246
- 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
Polycrystalline barium hexaferrites BaFe12−xNixO19 (x = 0, 0.3 and 0.5) ceramics were synthesized by the conventional solid state route. X-ray diffraction and Fourier transform infrared spectroscopy studies confirmed the successful substitution of Ni in BaFe12O19 without the formation of any additional phase. Scanning electron microscopy images showed a platelet-like morphology of particles with an increase of average grain size by the increase in Ni content. A vibrating sample magnetometer revealed that the remnant magnetization Mr and coercivity Hc increased to a large extent, i.e., from 20.24 to 25.51 emu/g and from 1027.20 to 1971.60 Oe, respectively, with the increase in Ni from x = 0 to x = 0.5; however, saturation magnetization Ms showed a minor variation. Dielectric studies were done using a precision impedance analyzer, which showed a decrease in dielectric loss with the increase in Ni content and very little variation in the conductivity of the samples.
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