无机材料学报

• 研究论文 • 上一篇    下一篇

铁电微分回线谱参数和极化疲劳

陈敏1, 朱贵文2, 周伟华3, 沈韩1, 李景德1

  

  1. 1. 中山大学物理科学与工程技术学院, 广州 510275; 2. 广东药学院物理教研室, 广州 510224; 3. 宜春学院物理系, 宜春 336000

  • 收稿日期:2006-05-25 修回日期:2006-08-08 出版日期:2007-05-20 网络出版日期:2007-05-20

Differential Hysteresis loop of Ferroelectrics and Polarization Fatigue

CHEN Min1, ZHU Gui-Wen2, ZHOU Wei-Hua3, SHEN Han1, LI Jing-De1   

  1. 1. School of Physics Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China; 2. Department of Physics, Guangdong College of Pharmacy, Guangzhou 510224, China; 3. Department of Physics, Yi Chun College, Yichun 336000, China
  • Received:2006-05-25 Revised:2006-08-08 Published:2007-05-20 Online:2007-05-20

摘要:

用铁电微分回线谱分析方法研究了Ba 0.99 Sr 0.01 TiO 3陶瓷的极化疲劳效应, 该方法可将线性和非线性电导、非铁电极化电容、以及纯铁电极化信号完全分开. 实验给出各效应对应的微分谱线型参数在疲劳过程中的变化规律, 并据此分出样品中分别由180°畴和90°畴提供的极化, 发现在同等作用下, 180°畴提供的极化更快出现疲劳.

关键词: 铁电性, 疲劳, 微分回线, 钛酸锶钡

Abstract:

By means of ferroelectric differential hysteresis loop spectra, the polarization fatigue of Ba 0.99 Sr 0.01 TiO3 ceramics was carefully studied. The effects of conductance, paraelectrics and pure ferroelectrics could be definitely separated. The results show that the polarization fatigue arose from 180° domain appears much faster than that arose from 90° domain. Ferroelectric differential loop spectra are proved to be a much more powerful method to describe polarization fatigue than traditional hysteresis loop.

Key words: ferroelectricity, fatigue, differential hysteresis loop, BST

中图分类号: