Phenomenological model for the antiferroelectric phase transition in thin films and small particles

被引：24

作者：

Charnaya, EV ^{[1
]}

Pogorelova, OS

Tien, C

机构：

[1] Natl Cheng Kung Univ, Dept Phys, Tainan 701, Taiwan

[2] St Petersburg State Univ, Inst Phys, St Petersburg 198504, Russia

[3] St Petersburg State Med Univ, Dept Phys, St Petersburg 195067, Russia

来源：

PHYSICA B | 2001年 / 305卷 / 02期

基金：

俄罗斯基础研究基金会;

关键词：

antiferroelectrics; thin films; small particles; phase transitions; Landau theory; susceptibility;

D O I：

10.1016/S0921-4526(01)00613-5

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 [凝聚态物理];

摘要：

A phenomenological Landau model for the antiferroelectric phase transition in thin films and small cylindrical and spherical particles is developed. The boundary value problem was solved numerically for polarizations of polar sublattices and components of the susceptibility tensor. The spatial distribution of polarization and susceptibility and their temperature dependences were calculated. The enhancement of diagonal components of the susceptibility tensor compared to bulk was found. The size-dependent shift of the antiferroelectric phase transition temperature was obtained. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：97 / 104

页数：8

共 23 条

[1]

The nature of ferroelectric order in finite systems [J].