A PHENOMENOLOGICAL THEORY OF THE FERROELECTRIC PHASE-TRANSITION OF BI4TI3O12

被引：16
|
作者：
ISHIBASHI, Y
机构：
[1] Department of Applied Physics School of Engineering, Nagoya University, Nagoya
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1995年 / 34卷 / 9B期
关键词：
BI4TI3O12; LANDAU THEORY; FERROELECTRIC; PHASE TRANSITION;
D O I：
10.1143/JJAP.34.5475
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The ferroelectric phase transition in Bi4Ti3O12 is interpreted phenomenologically on the basis of a Landau-type free energy. The requirements on the concrete parameter values, necessary to induce the first order tetragonal-monoclinic phase transition in Bi4Ti3O12, are discussed. It turns out that a simple free energy function consisting of six terms in the polarization components p(alpha) and p(c) reproduces well the phase transition itself and the temperature dependence of spontaneous polarizations, while a seventh term is required to reproduce the temperature dependence of the dielectric susceptibilities.
引用
收藏
页码：5475 / 5477
页数：3
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