Singh, Shiva Kumar and Kumar, Anuj and -, Shruti and Sharma, G. and Patnaik, S. and Husain, M. and Awana, V. P. S. (2013) Superconductivity in BiS2 based Bi4O4S3 novel compound. AIP Conference Proceedings, 1512. pp. 1104-1105. ISSN 0094-243X

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Abstract

We report here synthesis and basic characterizations of Bi4O4S3 superconductor. The sample is crystallized in tetragonal I4/mmm space group with lattice parameters a = 3.969(2) angstrom, c = 41.352(1) angstrom. Both DC magnetization and resistivity measurements confirmed that Bi4O4S3 is a bulk superconductor with superconducting transition temperature (T-c) of 4.4K. Closed loops in isothermal magnetization (MH) measurements are clear signature of flux pinning and irreversible behavior. The lower critical field (H-c1) is found to be similar to 15 Oe at 2K. The magneto- transport P(T, H) measurements showed resistive broadening and decrease in Tc (P = 0) with increasing magnetic field. Upper critical field calculated through extrapolation H-c2(0) is similar to 31kOe with corresponding Ginzburg-Landau coherence length similar to 100 angstrom. Our magnetization and electrical transport measurements substantiate the appearance of bulk superconductivity in as synthesized Bi4O4S3.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/s AIP Publishing.
Subjects:	Applied Physics/Condensed Matter
Divisions:	UNSPECIFIED
Depositing User:	Users 27 not found.
Date Deposited:	03 Jun 2020 11:01
Last Modified:	03 Jun 2020 11:01
URI:	http://npl.csircentral.net/id/eprint/3020

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