中文摘要：

在1.0-3.0 GPa,673-973 K和10^-1-106Hz条件下,利用交流阻抗谱实验技术,首次对微斜长石[（K0.73Na0.16Ca0.09）0.98AlTi0.01Si2.99O8]电导率进行原位测量。实验结果表明：样品的复阻抗的模和相角对频率有很强的依赖性;样品电导率随着温度升高而增大,电导率的对数和温度的倒数之间关系符合Arrhenius线性关系;微斜长石电导率随着压力升高而降低,而活化焓随之增加;离子导电机制对高温高压下微斜长石的导电行为给予了合理的解释。

英文摘要：

Conductivity of microcline [（K0.73Na0.16Ca0.09）0.98AlTi0.01Si2.99O8] was firstly measured by AC impedance spectroscopy method under conditions of 1.0-3.0 GPa and 673-973 K and the frequency range from 10^-1 to 106 Hz.The experimental results indicate that the modulus and phase angle of complex impedance spectra of microcline strongly depend on frequency.Electrical conductivity of samples increases as the temperature increasing,and the logarithm of the electrical conductivity and the reciprocal temperature fit the linear Arrhenius relation.The electrical conductivity of microcline decreases as pressure increasing,while the activation enthalpy slightly increases.The conduction mechanism in microcline is ionic conduction,with alkali ions moving in channels.