Structural and Transport Properties of CuIr_2(S, Se)_4 under High Pressure
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The structural and transport properties of CuIr<SUB>2</SUB> (S<SUB>1-x</SUB>Se<SUB>x</SUB>) <SUB>4</SUB> spinel compounds under high pressure have been studied up to 10 GPa. Resistivities of all samples were found to become insulating with increasing pressure even for the samples behaving metallic at ambient condition. When pressure was applied to the metallic samples with x=0. 9 and 1. 0, an anomalous peak appeared below 100K in the temperature dependence of the resistivity at lower pressure, but the semiconducting behaviour governed the whole temperature region at higher pressure. No structural change was observed at the temperature above and below the anomalous peak. This behaviour was discussed by the model based on some ordering of the localized charges induced by applied pressure.
- The Review of High Pressure Science and Technology
The Review of High Pressure Science and Technology 7, 496-498, 1998
The Japan Society of High Pressure Science and Technology