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    • Upper critical field of Bi1·5-Pb0·5-Ca2-Sr2-Cu3-Ox superconductor

      V Prasad S V Subramanyam

      International Conference On Superconductivity—III Volume 14 Issue 4 August 1991 pp 891-893

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      https://www.ias.ac.in/article/fulltext/boms/014/04/0891-0893

    • Keywords

       

      Upper critical field; zero resistance transition

    • Abstract

       

      The highTc superconductor of nominal composition Bi1·5-Pb0·5-Ca2-Sr2-Cu3-Ox was prepared by solid-state reaction method. The upper critical fieldHc2 of the material with a zero-resistance transition at 110K was investigated by observing variations in resistance with temperature down to 90 K and with a magnetic field up to7T. The slope ofHc2 with temperature was about −0·41T/K for zero resistance transition and −6·86T/K for onset of superconductivity.Hc2 values at 0K were estimated to be 31·3T and 563T for zero-resistance transition and onset of superconductivity respectively.

    • Author Affiliations

       

      V Prasad1 S V Subramanyam1

      1. Department of Physics, Indian Institute of Science, Bangalore - 560 012, India

    • Dates

       
      Published
      August 1991

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