Phase-field simulation of strain-induced ferroelectric domain evolution in hexagonal manganites

被引：3
|
作者：
Shi, Xiaoming [1 ]
Huang, Houbing [1 ]
Wang, Xueyun [1 ,2 ]
机构：
[1] Univ Sci & Technol Beijing, Dept Phys, Beijing 100083, Peoples R China
[2] Beijing Inst Technol, Sch Aerosp Engn, Beijing 100081, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2017年 / 719卷
基金：
美国国家科学基金会;
关键词：
YMnO3; Vortex to stripe domain; Strain induced; Topological charge; CONDENSATION; DEFECTS;
D O I：
10.1016/j.jallcom.2017.05.212
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The domain structures evolution induced by strain in hexagonal manganites was simulated through using phase-field simulation. The result demonstrated that tensile strain in x direction (or compressive strain in y direction) and pure shear strain will drive topological ferroelectric vortex into topological stripe domains in y direction and x direction, respectively. During this ferroelectric domain evolution, the annihilation of topological vortex-antivortex was found in a way that vortices and antivortices are moving in the opposite direction. Meanwhile, the topological charge is conservative during this evolution under the periodic boundary condition. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码：455 / 459
页数：5
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