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无机材料学报

无机材料学报

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PMN基电致伸缩陶瓷电致应变温度特性

温保松; 严鸿萍; 马佳华   

  1. 中国科学院上海硅酸盐研究所, 上海 200050
  • 收稿日期:1999-12-07 修回日期:2000-01-19 出版日期:2000-12-20 网络出版日期:2000-12-20

Temperature Characteristics of Electrostrictive Strain in PMN-Based Electrostrictive Ceramics

WEN Bao-Song; YAN Hong-Ping; MA Jia-Hua   

  1. Shanghai Institute of Ceramics; Chinese Academy of Sciences; Shanghai 200050; China
  • Received:1999-12-07 Revised:2000-01-19 Published:2000-12-20 Online:2000-12-20

PDF (PC)

1048

被引次数

4

摘要： 研究了扩散相变中心温度分别为４０℃和６５℃的两种Ｌａ－掺杂ＰＭＮ基陶瓷在其扩散相变温度范围的电致应变、电致应变随电场（Ｓ～Ｅ）的滞后特性和剩余应变效应．结果发现，对于扩散相变中心温度为４０℃的材料在０～１ｋＶ／ｍｍ单向电场驱动下；从－１０～６０℃电致应变和滞后都随温度的升高而减小；对另一种材料无论由±１ｋＶ／ｍｍ交变电场或由０～１ｋＶ／ｍｍ单向电场驱动，温度从１３～４１℃变化均出现电致应变峰值，而滞后和剩余应变随温度的升高而减小．对以上实验结果本文作了详细讨论．

关键词: PMN基陶瓷, 电致伸缩, 扩散相变

Abstract: The electrostrictive strain, hysterestic (S～ E) nature and remanent strain effect were investigated in their diffuse phase transition temperature
rang for two kinds of La-doping PMN-based ceramics with the diffuse phase transition center temperature 40℃ and 65℃ respectively.
The experimental results show that for the material with diffuse phase transition center temperature 40℃, its strain and hysteresis decrease as temperature
increases in the range of --10℃ to 60℃ driving by 0～1kV/mm one direction field, and for the other material whether driving by ±1kV/mm AC field or 0～1kV/mm one direction field the strains exhibit a
peak value with temperature change from 13℃ to 41℃, the remanent strain and hysteresis decrease monotonically with temperature increase. Above
experimental results were also explained in detail.

Key words: PMN-based ceramics, electrostriction, diffuse phase transition

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