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Journal Article

High-pressure studies of superconductivity in BiO0.75F0.25BiS2


Thakur,  Gohil S.
Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Haque, Z., Thakur, G. S., Selvan, G. K., Arumugam, S., Gupta, L. C., & Ganguli, A. K. (2017). High-pressure studies of superconductivity in BiO0.75F0.25BiS2. Bulletin of Materials Science, 40(6), 1121-1125. doi:10.1007/s12034-017-1477-y.

Cite as: https://hdl.handle.net/11858/00-001M-0000-002E-1862-A
BiO0.75F0.25BiS2 crystallizes in tetragonal CeOBiS2 structure (S. G. P4/nmm). We have investigated the effect of pressure on magnetization measurements. Our studies suggest improved superconducting properties in polycrystalline samples of BiO0.75F0.25BiS2. The T-c in our sample is 5.3 K, at ambient pressure, which is marginal but definite enhancement over T-c reported earlier (= 5.1 K). The upper critical field H-c2(0) is greater than 3 T, which is higher than earlier report on this material. As determined from the M-H curve, both H-c2 and H-c1 decrease under external pressure P (0 <= P <= 1 GPa). We observe a decrease in critical current density and transition temperature on applying pressure in BiO0.75F0.25BiS2.