高温高压下微斜长石的阻抗谱实验研究
Experimental Study on Impedance Spectra of Microcline under High Temperature and High Pressure
查看参考文献29篇
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文摘
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在1.03.0 GPa,673973 K和10-1106Hz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 |
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其他语种文摘
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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 |
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来源
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人工晶体学报
,2011,40(1):284-289 【核心库】
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关键词
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微斜长石
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高温高压
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电导率
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导电机制
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地址
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1.
中国科学院研究生院, 中国科学院地球深部物质与流体作用地球化学实验室, 贵阳, 550002
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中国科学院地球化学研究所, 中国科学院地球深部物质与流体作用地球化学实验室, 贵阳, 550002
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Department of Earth and Planetary Sciences, Tokyo Institute of Technology, 中国科学院地球深部物质与流体作用地球化学实验室, 贵阳, 550002
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1000-985X |
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学科
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物理学 |
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基金
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中国科学院知识创新工程重要方向项目
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国家自然科学基金
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文献收藏号
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CSCD:4143686
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