The effect of stress on the dielectric constants of Bi4Ti3O12 films

被引：2

作者：

Li, Liben ^{[1
]}

Chen, Qingdong ^{[1
]}

You, Jinghan ^{[1
]}

Tang, Zhengxin ^{[1
]}

机构：

[1] Henan Univ Sci & Technol, Sch Sci, Luoyang 471003, Peoples R China

来源：

THIN SOLID FILMS | 2010年 / 518卷 / 20期

关键词：

Thermodynamic theory; Bi4Ti3O12; Stress impact; THIN-FILMS; TITANATE;

D O I：

10.1016/j.tsf.2009.10.035

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Both experiment and theory have shown that the stress has a notable impact on the polarization of Nd-doped Bi4Ti3O12 films. In this paper, thermodynamic theory is used to study the effect of stress on the dielectric constants of Bi4Ti3O12 films at room temperature with a two-dimensional model. Results indicate that the change of the dielectric constant for a-phase induced by the lattice distortion is far greater than that for c-phase. Considering the domain reorientation, the external tensile stress may lead to an obvious decrease in the effective dielectric constant of Bi4Ti3O12 films. Crown Copyright (C) 2009 Published by Elsevier B.V. All rights reserved.

引用

页码：5649 / 5651

页数：3

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