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    • Effect of Sb substitution on the superconductivity of Bi2(Ca,Sr)n+1CunO4n+2 (n=1, 2 and 3) systems

      P Somasundaram A M Umarji

      Volume 35 Issue 4 October 1990 pp 369-375

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    • Keywords

       

      Oxide superconductors; bismuth; antimony; dopant effect

    • Abstract

       

      Effect of incorporation of Sb in place of Bi in the bismuth cuprate superconductors has been examined. The nominal compositions studied are MCa1·5Sr1·5Cu2O8+δ and MCa2Sr2Cu3O10+δ, whereM=Bi2−xSbx or Bi1·5−xSbxPb0·5. Different preparative routes such as the ceramic method, the matrix route as well as the melt route were employed to prepare the materials. No indication of either Sb entering the lattice or enhancement ofTc is noted from resistivity, magnetic susceptibility and microwave absorption measurements.

    • Author Affiliations

       

      P Somasundaram1 A M Umarji1

      1. Materials Research Centre, Indian Institute of Science, Bangalore - 560 012, India

    • Dates

       
      Published
      October 1990
      Manuscript received
      26 April 1990
      Manuscript revised
      7 August 1990

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