Dielectric, magnetic, and magnetoelectric properties of laminated PbZr0.52Ti0.48O3/CoFe2O4 composite ceramics
Dielectric, magnetic, and magnetoelectric properties of laminated PbZr0.52Ti0.48O3/CoFe2O4 composite ceramics
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DOI：
10.1063/1.2358191
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发表时间：
2006-11-01
影响因子：
3.2
通讯作者：
Nan, Ce-Wen
中科院分区：
文献类型：
--
作者：
Zhou, Jian-ping;He, Hong-cai;Nan, Ce-Wen
采用常规陶瓷工艺制备了PbZr0.52Ti0.48O3（PZT）/CoFe 2 O 4（CFO）/PbZr0.52Ti0.48O3层状多铁性复合材料。不同层之间的元素发生相互扩散，改变材料性质。由于PZT层的高介电常数和CFO层的低介电常数，这种夹层陶瓷的介电行为由不同层的相对厚度决定。的磁电行为强烈依赖于CFO层的相对厚度，直流磁场，交流磁场频率，和磁场和极化方向之间的角度θ。复合材料的最大磁电感应电压系数达到27 mV/Oe，接近文献报道的值。用有限元法模拟了复合材料的磁电效应。分析了实验与模拟结果差异的原因。(c)2006年，美国物理学会。
Multiferroic laminated composites of PbZr0.52Ti0.48O3(PZT)/CoFe2O4(CFO)/PbZr0.52Ti0.48O3 were prepared by conventional ceramic processing. The interdiffusion of the elements between different layers occurred, altering material properties. The dielectric behavior of such a sandwiched ceramic was dominated by the relative thickness of the different layers because of the high dielectric constant of the PZT layer and the low dielectric constant of the CFO layer. The magnetoelectric behaviors were strongly dependent on the relative thickness of the CFO layer, dc magnetic field, ac magnetic frequency, and the angle theta between the magnetic field and polarization direction. The maximal magnetoelectric-induced voltage coefficient of the composites reaches up to about 27 mV/Oe, close to what was reported previously. The magnetoelectric effect of the laminated composites was also simulated with the finite-element method. The reasons for the difference between experiment and simulation were discussed. (c) 2006 American Institute of Physics.