Hg1-xCdxTe在高压下的电学性质、状态方程与相变

鲍忠兴; 褚君浩; 柳翠霞; 顾惠成; 刘克岳; 李标; 王金义

doi:10.11858/gywlxb.2000.01.005

Hg1-xCdxTe在高压下的电学性质、状态方程与相变

doi: 10.11858/gywlxb.2000.01.005

1.
中国科学院物理研究所，北京 100080；
2.
中国科学院国际材料物理中心，辽宁沈阳 110015；
3.
中国科学院上海技术物理研究所红外物理国家重点实验室，上海 200083；
4.
华北光电研究所，北京 100015

详细信息

通讯作者:
鲍忠兴

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出版历程
- 收稿日期: 1999-06-22
- 修回日期: 1999-09-21
- 刊出日期: 2000-03-05

Electrical Properties, Equations of State and Phase Transitions in Hg1-xCdxTe at High Pressure

1.
Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China;
2.
International Center for Materials Physics, Chinese Academy of Sciences, Shenyang 110015, China;
3.
National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China;
4.
North China Research Institute of Electro-Optics, Beijing 100015, China

More Information

Corresponding author: BAO Zhong-Xing

摘要

摘要: 在金刚石压砧装置上，采用电阻和电容测量方法研究了Hg1-xCdxTe（x=0.19，0.22）在室温下、20 GPa内的电阻、电容与压力的关系。实验结果表明：它们分别在0.7～1.8 GPa与8.6 GPa左右以及在1.6 GPa左右与8.3 GPa左右发生了两次电子结构相变；分别在2 GPa左右与8.6 GPa以上以及在1.6 GPa左右与8.3 GPa以上发生了两次晶体结构相变。同时，还在活塞-圆筒式p-V关系测量装置上研究了Hg1-xCdxTe（x=0.21）在室温下、4.5 GPa内的p-V关系。实验结果发现它在2.1 GPa左右发生了相变。给出了它在相变前后的状态方程。
- 电阻 /
- 电容 /
- 状态方程 /
- 相变
Abstract: The resistance-pressure and capacitance-pressure relationships for Hg1-xCdxTe (x=0.19, 0.22) at room temperature at pressures up to 20 GPa have been studied in a diamond anvil cell using resistance and capacitance measurements established by us. The experimental results show that Hg1-xCdxTe (x=0.19, 0.22) undergo two electronic structure transitions at about 0.7～1.8 GPa, 8.6 GPa and 1.6 GPa, 8.3 GPa, respectively, and two crystal structure transitions at about 2 GPa, above 8.6 GPa and about 1.6 GPa, above 8.3 GPa, respectively. In the present work, the p-V relationship for Hg1-xCdxTe (x=0.19, 0.22) at room temperature and up to 4.5 GPa has been studied using the piston-cylinder type measurement device for the p-V relationship. The experimental results indicate that the phase transition in Hg1-xCdxTe (x=0.19, 0.22) occurs at about 2.1 GPa. Its equations of state before and after the phase transition have been given.
- resistance /
- capacitance /
- equation of state /
- phase transition