Observation of inhomogeneous domain nucleation in epitaxial Pb(Zr,Ti)O3 capacitors

被引：104

作者：

Kim, D. J. ^{[1
]}

Jo, J. Y. ^{[1
]}

Kim, T. H. ^{[1
]}

Yang, S. M. ^{[1
]}

Chen, B. ^{[1
]}

Kim, Y. S. ^{[1
]}

Noh, T. W. ^{[1
]}

机构：

[1] Seoul Natl Univ, Dept Phys & Astron, Seoul 151747, South Korea

来源：

APPLIED PHYSICS LETTERS | 2007年 / 91卷 / 13期

基金：

新加坡国家研究基金会;

关键词：

FIELD;

D O I：

10.1063/1.2790485

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We investigated domain nucleation process in epitaxial Pb(Zr,Ti)O-3 capacitors under a modified piezoresponse force microscope. We obtained domain evolution images during polarization switching process and observed that domain nucleation occurs at particular sites. This inhomogeneous nucleation process should play an important role in an early stage of switching and under a high electric field. We found that the number of nuclei is linearly proportional to log(switching time), suggesting a broad distribution of activation energies for nucleation. The nucleation sites for a positive bias differ from those for a negative bias, indicating that most nucleation sites are located at the ferroelectric/electrode interfaces.

引用

页数：3

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