Experimental Study on the Electrical Conductivity of Pyroxene Andesite at High Temperature and High Pressure | |
KeShi Hui; LiDong Dai; HePing Li; HaiYing Hu; JianJun Jiang; WenQing Sun; Hui Zhang | |
刊名 | Pure and Applied Geophysics
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2017 | |
卷号 | 174期号:3页码:1033-1041 |
关键词 | Electrical Conductivity Pyroxene Andesite Dehydration Conduction Mechanism High Pressure |
英文摘要 | The electrical conductivity of pyroxene andesite was in situ measured under conditions of 1.0–2.0 GPa and 673–1073 K using a YJ-3000t multi-anvil press and Solartron-1260 Impedance/Gain-phase analyzer. Experimental results indicate that the electrical conductivities of pyroxene andesite increase with increasing temperature, and the electrical conductivities decrease with the rise of pressure, and the relationship between electrical conductivity (r) and temperature (T) conforms to an Arrhenius relation within a given pressure and temperature range. When temperature rises up to 873–923 K, the electrical conductivities of pyroxene andesite abruptly increase, and the activation enthalpy increases at this range, which demonstrates that pyroxene andesite starts to dehydrate. By the virtue of the activation enthalpy (0.35–0.42 eV) and the activation volume (-6.75 ± 1.67 cm3 /mole) which characterizes the electrical properties of sample after dehydration, we consider that the conduction mechanism is the small polaron conduction before and after dehydration, and that the rise of carrier concentration is the most important reason of increased electrical conductivity. |
语种 | 英语 |
内容类型 | 期刊论文 |
源URL | [http://ir.gyig.ac.cn/handle/42920512-1/8162] ![]() |
专题 | 地球化学研究所_地球内部物质高温高压实验室 |
作者单位 | 1.Key Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China 2.University of Chinese Academy of Sciences, Beijing 100049, China 3.Key Laboratory of High-Temperature and High-Pressure Study of the Earth’s Interior, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550002, China |
推荐引用方式 GB/T 7714 | KeShi Hui;LiDong Dai;HePing Li;HaiYing Hu;JianJun Jiang;WenQing Sun;Hui Zhang. Experimental Study on the Electrical Conductivity of Pyroxene Andesite at High Temperature and High Pressure[J]. Pure and Applied Geophysics,2017,174(3):1033-1041. |
APA | KeShi Hui;LiDong Dai;HePing Li;HaiYing Hu;JianJun Jiang;WenQing Sun;Hui Zhang.(2017).Experimental Study on the Electrical Conductivity of Pyroxene Andesite at High Temperature and High Pressure.Pure and Applied Geophysics,174(3),1033-1041. |
MLA | KeShi Hui;LiDong Dai;HePing Li;HaiYing Hu;JianJun Jiang;WenQing Sun;Hui Zhang."Experimental Study on the Electrical Conductivity of Pyroxene Andesite at High Temperature and High Pressure".Pure and Applied Geophysics 174.3(2017):1033-1041. |
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