English

应用科学学报 ›› 2000, Vol. 18 ›› Issue (4): 365-367.

• 论文 • 上一篇    下一篇

(Pb1-xSrx)TiO3系红外敏感铁电陶瓷的研究

王茂祥, 孙彤, 孙平   

  1. 东南大学电子工程系, 江苏南京 210096
  • 收稿日期:1999-07-08 修回日期:1999-10-07 出版日期:2000-12-31 发布日期:2000-12-31
  • 作者简介:王茂祥(1967-),男,江苏句容人,博士生.
  • 基金资助:
    国家自然科学基金资助项目(69671008)

Research on (Pb1-xSrx)TiO3 Infrared Sensitive Ferroelectric Ceramics

WANG Mao-xiang, SUN Tong, SUN Ping   

  1. Department of Electronic Engineering, Southeast University, Nanjing 210096, China
  • Received:1999-07-08 Revised:1999-10-07 Online:2000-12-31 Published:2000-12-31

PDF

68

摘要： 通过改变材料组分并掺杂一定浓度的MnO2,制备了系列(Pb1-xSrx)TiO3(PST)红外敏感铁电陶瓷材料.对其电热性能如介电系数的温谱特性、频谱特性和热释电性能等进行了研究.结果表明,材料的居里温度随组分化学计量比的变化大致成线性关系,每增加mol比1%的Pb,将使居里温度提高约5℃.而随着测试频率的增加,居里温度与温度系数基本不变,但介电常数却略有下降.通过对PST系样品热释电性能的测量,可知材料的热释电系数约在10-3C/(m2·K)量级.

关键词: (Pb1-xSrx) TiO3系陶瓷, 频谱特性, 热释电性能, 温谱特性

Abstract: Through varying the component proportion of the Pb/Sr and doping 0. 25wt% MnO2, a series of (Pb1-xSrx) TiO3 infrared sensitive ferroelectric ceramic material was prepared. In this paper, the temperature, frequency, pyroelectric properties of these materials were studied. Results showed that the Curie temperature To would shift lineally with the Pb/Sr ratio. And the increase of 1% mol ratio Pb would raise Curie temperature by about 5℃. With the increase of working frequency, the dielectric constant ε of these materials showed a decrease, but the Curie temperature Tc and the temperature coefficient remained basically the same. The spontaneous polarization intensity of these materials decreased with the rise of the ambient temperature. The pyroelectric coefficient was in the order of 10-3C/(m2·K).

Key words: temperature properties, pyroelectric property, (Pb1-xSrx) TiO3 ceramic, frequency properties

中图分类号: