Electrical Conductivity of Synthetic Quartz Crystals at High Temperature and Pressure from Complex Impedance Measurements
WANG Duo-Jun1,2, LI He-Ping1, LIU Cong-Qiang1, YI Li1, DING Dong-Ye1,
SU Gen-Li1, ZHANG Wei-Gang3
1Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002
2Graduate School of Chinese Academy of Sciences, Beijing 100039
3Department of Earth Science, Oil University, Beijing 102200
Electrical Conductivity of Synthetic Quartz Crystals at High Temperature and Pressure from Complex Impedance Measurements
WANG Duo-Jun1,2;LI He-Ping1;LIU Cong-Qiang1;YI Li1;DING Dong-Ye1,
SU Gen-Li1;ZHANG Wei-Gang3
1Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002
2Graduate School of Chinese Academy of Sciences, Beijing 100039
3Department of Earth Science, Oil University, Beijing 102200
Abstract： An electrical conductivity measurement system under high-pressure conditions with a multi-anvil high-pressure apparatus by an ac complex impedance method was set up. With this system, we have successfully measured the electrical conductivity of synthetic quartz under pressure up to approximately 1.0 GPa in the temperature range 661-987 K. The values of electrical conductivity decrease with the increasing pressure and increase with the increasing temperature. The activation enthalpies for the α-quartz crystals are 1.10-1.28 eV. The electrical conductivity of α-quartz is ionic, with Na ions moving in channels parallel to the c-axis being the predominant current carrier.
(Impurity and defect levels; energy states of adsorbed species)
引用本文:
WANG Duo-Jun;LI He-Ping;LIU Cong-Qiang;YI Li;DING Dong-Ye;
SU Gen-Li;ZHANG Wei-Gang. Electrical Conductivity of Synthetic Quartz Crystals at High Temperature and Pressure from Complex Impedance Measurements[J]. 中国物理快报, 2002, 19(8): 1211-1213.
WANG Duo-Jun, LI He-Ping, LIU Cong-Qiang, YI Li, DING Dong-Ye,
SU Gen-Li, ZHANG Wei-Gang. Electrical Conductivity of Synthetic Quartz Crystals at High Temperature and Pressure from Complex Impedance Measurements. Chin. Phys. Lett., 2002, 19(8): 1211-1213.
2002, Vol. 19 
