IMR OpenIR
In-situ control of different oxygen fugacity experimental study on the electrical conductivity of lherzolite at high temperature and high pressure
Dai, Lidong1,2; Li, Heping1; Deng, Heming1,2; Liu, Congqiang3; Su, Genli1; Shan, Shuangming1,2; Zhang, Lei1,2; Wang, Riping1,2
Corresponding AuthorLi, Heping(liheping@vip.skleg.cn)
2008
Source PublicationJOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
ISSN0022-3697
Volume69Issue:1Pages:101-110
AbstractAt 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.
Keywordelectrical conductivity
DOI10.1016/j.jpcs.2007.08.003
Indexed BySCI
Language英语
WOS Research AreaChemistry ; Physics
WOS SubjectChemistry, Multidisciplinary ; Physics, Condensed Matter
WOS IDWOS:000253181000016
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Cited Times:10[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/126256
Collection中国科学院金属研究所
Corresponding AuthorLi, Heping
Affiliation1.Chinese Acad Sci, Inst Geochem, Lab Stud Earths Interior & Geofluids, Guiyang 550002, Peoples R China
2.Grad Sch Chinese Acad Sci, Beijing 100080, Peoples R China
3.Chinese Acad Sci, Inst Geochem, Guiyang 550002, Peoples R China
Recommended Citation
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.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Dai, Lidong]'s Articles
[Li, Heping]'s Articles
[Deng, Heming]'s Articles
Baidu academic
Similar articles in Baidu academic
[Dai, Lidong]'s Articles
[Li, Heping]'s Articles
[Deng, Heming]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Dai, Lidong]'s Articles
[Li, Heping]'s Articles
[Deng, Heming]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.