The evolution of anti-vortex like domain under electric field in polycrystalline ferroelectric

被引：1

作者：

Tian, Xiaobao ^{[1
,2
]}

Zhou, Changchun ^{[3
]}

He, Xiaoqiao ^{[2
,4
]}

Zhou, Zhihong ^{[1
]}

Chen, Yu ^{[1
]}

Guo, Hao ^{[1
]}

Fan, Haidong ^{[1
]}

机构：

[1] Sichuan Univ, Dept Mech, Chengdu 610065, Sichuan, Peoples R China

[2] City Univ Hong Kong, Dept Architecture & Civil Engn, Tat Chee Ave, Hong Kong, Hong Kong, Peoples R China

[3] Sichuan Univ, Natl Engn Res Ctr Biomat, Chengdu 610064, Peoples R China

[4] City Univ Hong Kong, Shenzhen Res Inst, Ctr Adv Struct Mat, Shenzhen 518057, Peoples R China

来源：

COMPOSITES PART B-ENGINEERING | 2018年 / 154卷

基金：

中国国家自然科学基金;

关键词：

Polycrystalline ferroelectric; Anti-vortex; Motion; Electric field; HEAT-TRANSFER; NANOFLUID FLOW; SIMULATION; ANNIHILATION; CONVECTION; RADIATION;

D O I：

10.1016/j.compositesb.2018.07.063

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Domain wall (DW) plays an important role in the domain evolution. The anti-vortex could be a special domain structure of the mixed DWs, i.e. the Ising wall and the Mixed Ising-Neel wall. The anti-vortex domain in polycrystalline ferroelectric has been investigated by a modified first-principles-based atomistic method incorporating the anisotropic shell model. Results show that the nucleation and the disappearance of the anti-vortex happen at grain boundaries (GBs) under sinusoidal electric fields loading. As the anti-vortex motion by the electric field, it is a perfect view point for the domain evolutions. It has been found that the anti-vortex core can't pass through the GBs because of the size and disorder field. This phenomenon indicates that anti-vortex is only been obtained in grains at polycrystalline ferroelectric, and the electric field range must between -6.3 and 6.3 x 10(8) V/m.

引用

页码：195 / 199

页数：5

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