Magnetoelectric behaviors in BaTiO3/CoFe2O4/BaTiO3 laminated ceramic Check composites prepared by spark plasma sintering
Magnetoelectric behaviors in BaTiO3/CoFe2O4/BaTiO3 laminated ceramic Check composites prepared by spark plasma sintering
复制标题
BaTiO3/CoFe2O4/BaTiO3 层状陶瓷的磁电行为 检查放电等离子烧结制备的复合材料
DOI：
10.1016/j.ceramint.2018.02.192
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发表时间：
2018
影响因子：
5.2
通讯作者：
Xiong Rui
中科院分区：
文献类型：
--
作者：
Liu Yang;Xu Guowang;Xie Yongyu;Lv Hui;Huang Chuyun;Chen Yiwan;Tong Zhengfu;Shi Jing;Xiong Rui
采用放电等离子烧结(SPS)法制备了BaTiO_3(BTO)/CoFe_2O_4(CFO)/BaTiO(BTO)层状陶瓷复合材料。陶瓷复合材料致密，三层间边界清晰。在SPS过程中，致密化所需的时间短、温度低，减少了发生不必要的反应的可能性。BTO/CFO/BTO层状陶瓷复合材料表现出优异的ME性能，包括：(1)最大ME电压系数高达~1.0 V/Oe cm；(2)在102~107 Hz范围内有明显的交流磁场频率响应和灵敏度；(3)完美的ME各向异性与理论拟合曲线；(4)在~105 Hz的谐振频率下，巨大的横向ME电压系数高达~4.1 V/Oe cm。用本工作制备的BTO/CFO/BTO层状陶瓷可以制作多种ME功能器件。
The BaTiO3(BTO) / CoFe2O4(CFO) / BaTiO3(BTO) laminated ceramic composites were prepared via spark plasma sintering (SPS). The ceramic composites were highly dense with clear boundaries between the three layers. The short time and low temperature required for densification during the SPS process diminish the possibility for unwanted reactions to occur. The BTO/CFO/BTO laminated ceramic composites exhibit excellent ME properties including: (1) maximal ME voltage coefficient as high as ~ 1.0 V/Oe cm; (2) obvious AC magnetic field frequency response and sensitivity from 102to 107Hz; (3) perfect ME anisotropy matches well with the theoretical fitting curve; (4) giant transverse ME voltage coefficient as large as ~ 4.1 V/Oe cm at resonance frequency of ~ 105Hz. It is possible to fabricate several kinds of ME function devices with the BTO/CFO/BTO laminated ceramics prepared in this work.