In-situ control of oxygen fugacity for laboratory measurements of electrical conductivity of minerals and rocks in a multi-anvil press

doi:10.1088/1674-1056/20/4/049101

Abstract In this paper, a new of oxygen fugacity controltechnique that can be widely applied to in-situ measurement of the grain interior electrical conductivities of minerals and rocks is presented for high temperature and high pressure. Inside the sample assembly, a metal and corresponding metal oxide form a solid oxygen buffer. The principle of this technique is to randomly monitor and adjust oxygen fugacity in the large-volume multi-anvil press by changing the types of solid oxygen buffer, metal shielding case and electrodes. At a pressure of up to 5.0 GPa and a temperature of up to 1423 K, the electrical conductivities of the dry peridotite are tested under the conditions of different oxygen fugacities. By virtue of this new technique, more and more reasonable and accurate laboratory electrical property data will be successfully obtained under controlled thermodynamic conditions.

Keywords: oxygen fugacity electrical conductivity large-volume multi-anvil press

Received: 03 November 2010
Revised: 03 December 2010
Accepted manuscript online:

PACS:	91.25.F-	(Rock and mineral magnetism)
	91.35.Gf	(Structure of the crust and upper mantle)
	91.60.Pn	(Magnetic and electrical properties)

Fund: Project supported by the Knowledge Innovation Key Orientation Project of the Chinese Academy of Sciences (CAS) (Grant Nos. KZCX2-YW-Q08-3-4, KZCX2-YW-QN110, and KZCX3-SW-124), Large-scale Scientific Apparatus Development Program of CAS (Grant No. YZ200720), the National High Technology Research and Development Program of China (Grant No. 2006AA09Z205), and the National Natural Science Foundation of China (Grant Nos. 40974051, 40704010 and 40573046).

Cite this article:

Dai Li-Dong(代立东), Li He-Ping(李和平), Hu Hai-Ying(胡海英), and Shan Shuang-Ming(单双明) In-situ control of oxygen fugacity for laboratory measurements of electrical conductivity of minerals and rocks in a multi-anvil press 2011 Chin. Phys. B 20 049101

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In-situ control of oxygen fugacity for laboratory measurements of electrical conductivity of minerals and rocks in a multi-anvil press

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