Jha, Rajveer and Kumar, Anuj and Singh, Shiva Kumar and Awana, V. P. S. (2013) Synthesis and Superconductivity of New BiS2 Based Superconductor PrO0.5F0.5BiS2. Journal of Superconductivity and Novel Magnetism, 26. pp. 499-502. ISSN 1557-1939

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We report synthesis and superconductivity at 3.7 K in PrO0.5F0.5BiS2. The newly discovered material belongs to the layered sulfide based REO0.5F0.5BiS2 compounds having a ZrCuSiAs-type structure. The bulk polycrystalline compound is synthesized by the vacuum encapsulation technique at 780 C-a similar to in a single step. Detailed structural analysis has shown that the as synthesized PrO0.5F0.5BiS2 is crystallized in a tetragonal P4/nmm space group with lattice parameters a=4.015(5) , c=13.362(4) . Bulk superconductivity is observed in PrO0.5F0.5BiS2 below 4 K from magnetic and transport measurements. Electrical transport measurements showed superconducting transition temperature (T (c) ) onset at 3.7 K and T (c) (rho=0) at 3.1 K. The hump at T (c) related to the superconducting transition is not observed in the heat capacity measurement and rather a Schottky-type anomaly is observed at below similar to 6 K. The compound is slightly semiconducting in a normal state. Isothermal magnetization (MH) exhibited typical type II behavior with a lower critical field (H (c1)) of around 8 Oe.

Item Type: Article
Additional Information: Copyright for this article belongs to M/s Springer Verlag.
Subjects: Applied Physics/Condensed Matter
Depositing User: Users 27 not found.
Date Deposited: 03 Jun 2020 10:41
Last Modified: 03 Jun 2020 10:41
URI: http://npl.csircentral.net/id/eprint/3010

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