Study of microscopic piezoelectricity of (Pb0.76Ca0.24)TiO3 thin films

被引：23

作者：

Guo, HY ^{[1
]}

Xu, JB

Wilson, IH

Xie, Z

Luo, EZ

机构：

[1] Chinese Univ Hong Kong, Dept Elect Engn, Shatin, Hong Kong, Peoples R China

[2] Chinese Univ Hong Kong, Mat Sci & Technol Res Ctr, Shatin, Hong Kong, Peoples R China

来源：

PHYSICS LETTERS A | 2002年 / 294卷 / 3-4期

关键词：

D O I：

10.1016/S0375-9601(02)00023-3

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Piezoelectric response AFM was used to characterize (Pb0.76Ca0.24)TiO3 (PCT) thin films prepared by sol-gel method. Compared to lead zirconate titanate (PZT) films, better piezoelectric response contrast was obtained for the PCT film with relatively smaller remanent polarisation. This is attributed to the large electrostriction coefficient and weak clamping effect by substrate, which is related to the high piezoelectric anisotropy of PCT material. Remanent polarisation and spontaneous polarisation images reveal the existence of ferroelectricity in the PCT film with a thickness of 40 nm. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：217 / 221

页数：5

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