Magneto-dielectric laminated Ba(Fe0.5Nb0.5)O3-Bi0.2Y2.8Fe5O12 composites with high dielectric constant and high permeability
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- 作者：Haibo Yang ; yanghaibo@sust.edu.cn ; Luyang Bai ; Ying Lin ; Fen Wang ; Tong Wang
- 关键词：Laminated ; Dielectric properties ; Magnetic properties ; Sintering
- 刊名：Ceramics International
- 出版年：2017
- 出版时间：15 February 2017
- 年：2017
- 卷：43
- 期：3
- 页码：2903-2909
- 全文大小：1237 K
- 卷排序：43
文摘
Magneto-dielectric laminated ceramic composites of xBa(Fe0.5Nb0.5)O3-(1-x)Bi0.2Y2.8Fe5O12(BFN-BYIG) with high volume fractions of the giant dielectric constant material BFN (x=10, 30, 50, 70 wt%) were fabricated by the solid-state sintering method. Microstructure, dielectric and magnetic properties of the composites were investigated. The composites possess stable dielectric properties in the frequency range from 100 Hz to 1 MHz with high dielectric constant and low dielectric loss. The maximum permeability of the magneto-dielectric laminated composites reaches up to about 25. And the magnetic behaviors are strongly dependent on the mass ratio of BYIG. The results indicate that such multilayer structures of BFN/BYIG can enhance the permeability and decrease the dielectric and magnetic loss efficiently.