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    • Keywords


      High temperature superconductivity; quenching; lead and antimony doping

    • Abstract


      Samples of the series Bi1·9−xPbxSb0·1Sr2Ca2Cu3Oy withx=0, 0·1, 0·2, 0·3 and 0·4 were prepared by the solid-state route. The X-ray and d.c. electrical resistivity data on furnace-cooled and quenched samples are presented. Though the starting composition is 2223, the end products were multiphase with 4334 as the major phase. A superconducting transition withTc=100K was observed in the pure 2223 sample after quenching. The furnace-cooled samples were metallic, while samples withx=0·1, 0·2 and 0·3 were superconducting after quenching. The amount of the 4334 phase decreases with increasing Pb content. Quenching seems to be favourable for the formation of the 4334 phase.

    • Author Affiliations


      S V Suryanarayana1 Ravichandra Gundakaram1 B Gopala Krishna1 S Venkat Reddy1

      1. Department of Physics, Osmania University, Hyderabad - 500 007, India
    • Dates

  • Bulletin of Materials Science | News

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