J4 ›› 2011, Vol. 49 ›› Issue (01): 131-134.

• 材料科学 • 上一篇    下一篇

高压下石墨超硬相的电阻率测量

杨洁1,2, 刘才龙1, 吴宝嘉3   

  1. 1. 吉林大学 原子与分子物理研究所, 长春 130012|2. 空军航空大学 基础部, 长春 130022|3. 延边大学 理学院, 吉林 延吉 133002
  • 收稿日期:2010-12-01 出版日期:2011-01-26 发布日期:2011-02-19
  • 通讯作者: 吴宝嘉 E-mail:jbwuybdx@yahoo.com.cn

In Situ Electrical Measurement on Graphite Superhard Phase under High Pressure

YANG Jie1,2, LIU Cai long1, WU Bao jia3   

  1. 1. Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China;2. Department of Foundation, Aviation University of Air Force, Changchun 130022, China;3. College of Science, Yanbian University, Yanji 133002, Jilin Province, China
  • Received:2010-12-01 Online:2011-01-26 Published:2011-02-19
  • Contact: WU Bao jia E-mail:jbwuybdx@yahoo.com.cn

摘要:

采用高压下精确的原位电阻率测量技术, 利用高浓度硼掺杂的金刚石薄膜制备微电路, 在0~34 GPa测量石墨的电阻率随压力的变化规律.   结果表明: 在第一和第二个压力循环中, 石墨超硬相电阻率不连续变化, 分别出现在15.1 GPa和17.9 GPa; 相存在的最低压力为8 GPa. 

关键词: 石墨; , 高压, 超硬相; , 电阻率

Abstract:

The authors adopted an accurate in situ resistivity measurement method to measure the change of resistivity  of  graphite with the pressure for cold-compressed graphite in the pressure range of 0—34 GPa via a microcircuit  prepared by heavily boron\|doped diamond film. The results show that the phase transition of the cold-compressed graphite took place at  15.1 GPa and 17.9 GPa in  the first and second pressure cycles, respectively. The phase  can remain at pressure down to 8 GPa.

Key words: graphite, high pressure, superhard phase, resistivity

中图分类号: 

  • TB303