Pressure variation of the electrical and structural properties of bismuth-antimony alloy at the composition of x = 0.15 (Bi0.85Sb 0.15) has been studied by electrical resistivity and synchrotron radiation x-ray diffraction measurements up to 10 GPa. The crystal structure changes from the A7 structure to the incommensurate host-guest composite one at 3 GPa and room temperature. Temperature dependence of the resistivity greatly changes from the semiconducting behaviour to the metallic one associated with the structural phase transition. Pressure-induced superconducting transition of Bi0.85Sb0.15 is observed above 4.5 GPa. The transition temperature Tc is found to decrease from 6.79 GPa at 4.5 GPa to 5.82 K at 9.5 GPa with increasing pressure. © Published under licence by IOP Publishing Ltd.
Mendeley helps you to discover research relevant for your work.
CITATION STYLE
Ohmura, A., Yamamura, A., Einaga, M., Ishikawa, F., Nakayama, A., Yamada, Y., & Nakano, S. (2012). Pressure-induced superconductivity in Bi0.85Sb0.15 alloy. In Journal of Physics: Conference Series (Vol. 400). Institute of Physics Publishing. https://doi.org/10.1088/1742-6596/400/2/022088