Electrical conductivity of quartz at high pressure
|Location||International Geological Congress,oslo 2008|
|Author||Wang, Duojun۱; Yi, Li۲|
|Holding Date||20 September 2008|
The electrical conductivity of synthetic quartz was measured at 1.0GPa. AC measurements were made from 600 to 1200K, and over a frequency range from 0.1 to 1MHz.The complex impedance spectra were used to separate out the bulk conductivity from electrode effects. The results show that the electrical conductivity of quartz is anisotropy, and the electrical conductivity depends on temperature and the angle cut to c-axis, the alkali ions and hydrogen moving in the channels are dominant carriers. We suggest that the electrical conductivity of quartz have no abrupt change near to alpha-beta phase transition point.