Pressure-induced phase transformation in In2Bi |
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Authors: | MJ Clark M Simpson |
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Institution: | Department of Physics, Monash University, Clayton, Victoria 3168, Australia |
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Abstract: | We have made measurements of the pressure dependence of the superconducting transition temperature, Tc, for In2Bi and related alloys. For In2Bi- phase alloys, a large discontinuity in Tc is seen at 15–20 kbar, which we associate with a phase transformation first seen by Bridgman 1]. Our measurements suggest that this transformation is produced by the decomposition of In2Bi into In5Bi3 and an In-rich phase. In the low pressure phase, Tc shows a minimum at 9–15 kbar whereas it depends linearly on pressure in the high pressure phase with ?Tc/?P equal to -4.9 × 10-5 K bar-1. |
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