高压下石墨超硬相的电阻率测量

J4 ›› 2011, Vol. 49 ›› Issue (01): 131-134.

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In Situ Electrical Measurement on Graphite Superhard Phase under High Pressure

YANG Jie^1,2, LIU Cai long¹, WU Bao jia^3

1. Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China;2. Department of Foundation, Aviation University of Air Force, Changchun 130022, China;3. College of Science, Yanbian University, Yanji 133002, Jilin Province, China

Received:2010-12-01 Online:2011-01-26 Published:2011-02-19
Contact: WU Bao jia E-mail:jbwuybdx@yahoo.com.cn

Abstract

Abstract:

The authors adopted an accurate in situ resistivity measurement method to measure the change of resistivity  of graphite with the pressure for cold-compressed graphite in the pressure range of 0—34 GPa via a microcircuit prepared by heavily boron\|doped diamond film. The results show that the phase transition of the cold-compressed graphite took place at 15.1 GPa and 17.9 GPa in the first and second pressure cycles, respectively. The phase can remain at pressure down to 8 GPa.

Key words: graphite, high pressure, superhard phase, resistivity

CLC Number:

TB303

YANG Ji, LIU Cai-Long, TUN Bao-Jia-. In Situ Electrical Measurement on Graphite Superhard Phase under High Pressure[J].J4, 2011, 49(01): 131-134.

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In Situ Electrical Measurement on Graphite Superhard Phase under High Pressure

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