In-situ control of different oxygen fugacity experimental study on the electrical conductivity of lherzolite at high temperature and high pressure
文献类型：期刊论文
| 作者 | Dai, Lidong1,3; Li, Heping1; Deng, Heming1,3; Liu, Congqiang2; Su, Genli1; Shan, Shuangming1,3; Zhang, Lei1,3; Wang, Riping1,3 |
| 刊名 | JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
 |
| 出版日期 | 2008 |
| 卷号 | 69期号:1页码:101-110 |
| ISSN号 | 0022-3697 |
| 关键词 | electrical conductivity |
| DOI | 10.1016/j.jpcs.2007.08.003 |
| 通讯作者 | Li, Heping(liheping@vip.skleg.cn) |
| 英文摘要 | At pressure 1.0-4.0 GPa and temperature 1073-1423 K and under the control of oxygen fugacity (Mo+MoO2, Fe+FeO and Ni+NiO), a YJ-3000t multi-anvil solid high-temperature and high-pressure apparatus and Solartron-1260 impedance/Gain-Phase analyzer were employed to analyze the electrical conductivity of lherzolite. The experimental results showed that: (1) within the range of the selected frequencies (10(3)-10(6) Hz), either as viewed from the relationship between the real or imaginary part of complex impedance and the frequency, or from the relationship between modulus, phase angle and frequency, it can be seen clearly that the complex impedance has a strong dependence on frequency; (2) with the rise of temperature (T), the electrical conductivity (sigma) increased, and Lg sigma and 1/T follows the Arrhenius relationship; (3) with the rise of pressure, the electrical conductivity decreased, and activation enthalpy and temperature-independent pre-exponential factor decreased as well. And the activation energy and activation bulk volume of the main charge carrier in the lherzolite have been obtained for the first time, which are 1.68 +/- 0.02 eV and 0.04 +/- 0.01 cm(3)/mol, respectively; (4) under the given pressure and temperature, the electrical conductivity tends to increase with increasing oxygen fugacity, and under the given pressure, the activation enthalpy and pre-exponential factor tend to decrease with the rise of oxygen fugacity; (5) at 2.0 GPa and the control of the three solid buffers, Mo+MoO2, Fe+FeO and Ni+NiO, the exponential factors of electrical conductivity variation range with oxygen fugacity are 1/3.19 - 1/3.67, and the theoretical model for the relationship between the electrical conductivity of lherzolite and the oxygen fugacity under high pressure has been established for the first time; (6) the electrical conduction mechanism of small polarons provides a reasonable explanation to the variation of conductivity of lherzolite with oxygen fugacity. (C) 2007 Elsevier Ltd. All rights reserved. |
| WOS研究方向 | Chemistry ; Physics |
| 语种 | 英语 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| WOS记录号 | WOS:000253181000016 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/126255]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Li, Heping |
| 作者单位 | 1.Chinese Acad Sci, Inst Geochem, Lab Stud Earths Interior & Geofluids, Guiyang 550002, Peoples R China 2.Chinese Acad Sci, Inst Geochem, Guiyang 550002, Peoples R China 3.Grad Sch Chinese Acad Sci, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Dai, Lidong,Li, Heping,Deng, Heming,et al. In-situ control of different oxygen fugacity experimental study on the electrical conductivity of lherzolite at high temperature and high pressure[J]. JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS,2008,69(1):101-110. |
| APA | Dai, Lidong.,Li, Heping.,Deng, Heming.,Liu, Congqiang.,Su, Genli.,...&Wang, Riping.(2008).In-situ control of different oxygen fugacity experimental study on the electrical conductivity of lherzolite at high temperature and high pressure.JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS,69(1),101-110. |
| MLA | Dai, Lidong,et al."In-situ control of different oxygen fugacity experimental study on the electrical conductivity of lherzolite at high temperature and high pressure".JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS 69.1(2008):101-110. |
入库方式： OAI收割
来源：金属研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。