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• 物理 • 上一篇    下一篇

AgI的高压电学性质

杨晓翠1, 张立新2, 郝爱民2,3, 杨 洁4, 高春晓3, 邹广田3   

  1. 1. 白城师范学院 物理系, 吉林 白城 137000; 2. 河北科技师范学院 数理系, 河北 秦皇岛 066004; 3. 吉林大学 超硬材料国家重点实验室, 长春 130012; 4. 空军航空大学 基础部, 长春 130022
  • 收稿日期:2008-01-28 修回日期:1900-01-01 出版日期:2009-01-26 发布日期:2009-01-26
  • 通讯作者: 高春晓

Electrical Property of AgI under High Pressure

YANG Xiao cui1, ZHANG Li xin2, HAO Ai min2,3, YANG Jie4, GAO Chun xiao3, ZOU Guang tian3   

  1. 1. Department of Physics, Baicheng Normal College, Baicheng 137000, Jilin Province, China; 2. Department of Mathematics and Physics, Hebei Normal University of Science & Technology, Qinhuangdao 066004, Hebei Province, China; 3. State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China; 4. Department of Foundation, Aviation University of Air Force, Changchun 130022, China
  • Received:2008-01-28 Revised:1900-01-01 Online:2009-01-26 Published:2009-01-26
  • Contact: GAO Chun xiao

摘要: 利用在金刚石对顶砧上集成的微电路, 高压原位测量了AgI的电导率, 实验观察电导率随压力的变化规律, 并在不同压力下, 测量了岩盐相结构AgI的电导率随温度(293~443 K)的变化关系, 实验结果表明, ln(σT)与103T-1近似呈线性关系. 计算了传导离子浓度和Frenkel缺陷扩散的激活能, 并测量了KOH型结构AgI的电导率与温度和压力间的关系, 得到压力高于20 GPa时的能隙与压力关系. 

关键词: 电导率, 高压, 超离子传导

Abstract: Insitu conductivity measurement of AgI under high pressure and ambient temperature was carried out via fabricated microcircuit on diamond anvil cell (DAC). It was observed that conductivity changed with the increasing pressure. The temperature and pressure dependences of conductivity in rsAgI were studied under several pressures at temperatures from 293 K to 443 K. The experimental data show the plot of ln(σT) versus 103T-1 is approximately linear. The ionic carries concentration and activation energy for defect transport were calculated. And also, we investigated the temperature and pressure dependences of conductivity in KOHtype AgI and obtained the relation between energy gap and pressure.

Key words: conductivity, high pressure, superionic conduction

中图分类号: 

  • O521.21