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无机材料学报

无机材料学报

• 研究论文 • 上一篇    下一篇

弛豫型铁电陶瓷PMN材料的P～E回线特性

黄仲臧; 陈王丽华+; 蔡忠龙+   

  1. 中国科学院上海硅酸盐研究所; 上海 200050; +香港理工大学应用物理系及材料研究中心
  • 收稿日期:1998-06-09 修回日期:1900-01-01 出版日期:1998-12-20 网络出版日期:1998-12-20

Characteristic of P～E Loop of PMN Relaxor Ferroelectric Ceramic Material

HUANG Zhong-Zang; CHAN H.L.W.+; CHOY C.L+   

  1. Shanghai Institute of Ceramics; Chinese Academy of Sciences Shanghai 200050 China; +Department of Applied Physics and Materials Research Center The Hong Kong Polytechnic UniversityKowloon Hong Kong China
  • Received:1998-06-09 Revised:1900-01-01 Published:1998-12-20 Online:1998-12-20

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摘要： 按照Swarts和Shrout提出的方法制得了单相的钙钛矿结构Pb（Mg1／3Nb2／3）O3陶瓷样品，这种弛豫型铁电体陶瓷显示了不同于正常铁电体的P～E回线随频率变化特性．

关键词: 弛豫型铁电体, 正常铁电体, P～E回线

Abstract: According to the method proposed by Swarts and Shrout, PMN ceramic material with single perovskite phase was prepared, and no any
pyrochloride one was detected by X-ray diffraction analyses. SEM observation shows that the sample was dense without the apparent
pores. The hysteresis (P～E) loop was measured by using a Radiant Technology RT 66a and an amplifier. The change of P～E loop of the
sample with the frequency measured shows that the dependence of the polarization on the field of PMN relaxor ferroelectric ceramic material
at low frequency (e.g.10 Hz) is a curve without any hysteresis at room temperature, and P～E loop appears with the increase of frequency
measured(e.g.>100 Hz), the higher the frequency, the larger the P～E loop, which differs from that of normal ferroelectrics.

Key words: relaxor ferroelectrics, normal frroelectrics, hysteresis loop

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