Effect of gradient stress on the dielectric constant of BaTiO3 film

被引：0
|
作者：
Li, Li-Ben [1 ]
Chen, Qing-Dong [1 ]
Li, Xin-Zhong [1 ]
Zhen, Zhi-Qiang [1 ]
Hu, Zhi-Xiang [1 ]
机构：
[1] School of Physics and Engineering, Henan University of Science and Technology, Luoyang 471003, China
来源：
Shanghai Jiaotong Daxue Xuebao/Journal of Shanghai Jiaotong University | 2010年 / 44卷 / 05期
关键词：
Permittivity - Polarization - Barium titanate - Temperature distribution;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
A set of gradient stress was obtained by solving the elastic mechanical equations and used to Landau thermodynamic theory to explain the diffuse dielectric anomaly of BaTiO3 film grown on a tensile substrate. The results predict that a-and aa-phase may coexist in the film. The hysteretic spontaneous polarization behavior of the film can not be revealed for the in-plane polarization exists for the two phases. The temperature dependence of out-plane dielectric constant agrees with the experimental result.
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页码：655 / 658
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