Fe3O4的高压电学性质

J4 ›› 2013, Vol. 51 ›› Issue (01): 124-127.

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Electrical Property of Fe₃O₄ at a High Pressure

YANG Jie¹, |SU Ning ning², |PENG Gang²

1. Department of Foundation, Aviation University of Air Force, Changchun 130022, China;
2. State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China

Received:2012-05-16 Online:2013-01-26 Published:2013-01-31
Contact: PENG Gang E-mail:peng009@163.com

Abstract

Abstract:

The resistivity and magnetoresistance of Fe₃O₄ were investigated at a high pressure by means of in\|situ electrical resistivity measurement with diamond anvil cell. We obtained the relationship of resistivity as a function of pressure. When p＞6 GPa or p＜6 GPa, the resistivity of Fe₃O₄decreases with increasing pressure. Its dropdown speed at pressure p＜6 GPa is faster than that at pressure higher than 6 GPa. When p＜6 GPa, the sample shows a normal magnetic resistance effect. When p＞6 GPa, the sample shows a negative magnetic resistance effect. This phenomenon indicates that an electronic phase related to electron spin happens at 6 GPa.

Key words: high pressure, Fe3O4, magnetic resistance

CLC Number:

O521.21

YANG Ji, SU Ning-Ning, BANG Gang-. Electrical Property of Fe₃O₄ at a High Pressure[J].J4, 2013, 51(01): 124-127.

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Electrical Property of Fe₃O₄ at a High Pressure

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Electrical Property of Fe3O4 at a High Pressure

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Electrical Property of Fe₃O₄ at a High Pressure