An ab initio investigation of flexoelectric effect in ultrathin BaTiO3 nanotubes

被引：5
|
作者：
Yin, Binglun [1 ,2 ]
Qu, Shaoxing [1 ,2 ]
机构：
[1] Zhejiang Univ, Dept Engn Mech, Hangzhou 310027, Peoples R China
[2] Zhejiang Univ, SMRC, Hangzhou 310027, Peoples R China
来源：
JOURNAL OF APPLIED PHYSICS | 2014年 / 115卷 / 07期
基金：
中国国家自然科学基金;
关键词：
POLARIZATION; CAPACITORS;
D O I：
10.1063/1.4866355
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We predict the existence of radial polarizations in single-layer-thick BaTiO3 nanotubes via ab initio calculations. The electric polarization is confirmed and calculated by a reliable method based on electrostatic potential analysis. And the polarization is found proportional to the strain gradient, which is induced by the bending deformation. The calculated effective transverse flexoelectric coefficient of BaTiO3 nanotubes possesses an order of -1 nC/m. (C) 2014 AIP Publishing LLC.
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页数：4
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