摘要
铁电材料疲劳后出现的内部不同区域中的疲劳程度不一致,称为铁电疲劳不均匀性。概述了在铁电薄膜、陶瓷、单晶中观察到的疲劳不均匀现象,介绍了铁电材料中近电极区域的疲劳集中现象,针对铁电材料的极化反转机制和铁电疲劳不均匀性的微观机理进行了阐述分析,并展望了今后的研究方向即利用压电响应力显微术从微米纳米尺度对疲劳不均匀性进行深入研究。
In this review, the heterogeneity of ferroelectric fatigue is introduced firstly. The observed heterogeneity phenomena in ferroelectric films, ceramics and single crystals separately are described. Then the fatigue induced damage mostly occurring in the near electrode volume is pointed out. Finally, the various kinetics models of polarization switching and the possible microscopic mechanisms of fatigue heterogeneity in ferroelectric materials are reviewed. It is anticipated that piezoresponse force microscopy will have numerous applications in the more detailed investigation of fatigue heterogeneity on a micro- and nanometer scale.
出处
《材料导报》
EI
CAS
CSCD
北大核心
2010年第5期16-21,共6页
Materials Reports
基金
国家自然科学基金资助项目(50672042)
关键词
铁电疲劳
疲劳不均匀性
近电极区域
极化反转动力学
ferroelectric fatigue, .heterogeneity of fatigue, near electrode volume, kinetics of polarization switching
