CoFe2O4/BaTiO3 Composites via Spark Plasma Sintering with Enhanced Magnetoelectric Coupling and Excellent Anisotropy
CoFe2O4/BaTiO3 Composites via Spark Plasma Sintering with Enhanced Magnetoelectric Coupling and Excellent Anisotropy
复制标题
具有增强磁电耦合和优异各向异性的放电等离子烧结 CoFe2O4/BaTiO3 复合材料
DOI：
10.1111/j.1551-2916.2011.04582.x
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发表时间：
2011-06-01
影响因子：
3.9
通讯作者：
Xiong, Rui
中科院分区：
文献类型：
--
作者：
Liu, Yang;Ruan, Xuefeng;Xiong, Rui
采用放电等离子烧结法制备了CoFe 2 O 4（CFO）和BaTiO 3（BTO）磁电陶瓷复合材料。结果表明，具有良好微观结构的CFO/BTO陶瓷复合材料的ME电压系数显著提高，最高可达0.18 V/cm Oe，且具有良好的ME各向异性，与拟合曲线吻合较好。在这些陶瓷复合材料中，增强的ME电压系数单独与完美的ME各向异性提供了开发能够探测未知磁矢量的强度以及方向的磁场传感器的可能性。
Magnetoelectric (ME) ceramic composites of CoFe2O4 (CFO) and BaTiO3 (BTO) were prepared by spark plasma sintering. The CFO/BTO ceramic composites with fine microstructures exhibited a significant improvement in the ME voltage coefficient reaching up to 0.18 V/cm Oe. A perfect ME anisotropy was also observed in the CFO/BTO ceramic composites which consisted well with the fitted curve. The enhanced ME voltage coefficient alone with the perfect ME anisotropy in these ceramic composites provides a possibility of developing a magnetic field sensor capable of probing the strength as well as the direction of an unknown magnetic vector.