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Journal of Materials Science

, Volume 27, Issue 23, pp 6321–6323 | Cite as

Zero resistance of quenched Bi1.5Pb0.4Sb0.1Sr2Ca2Cu3Ox at 140 K

  • J. A. A. Khan
  • N. M. Butt
  • A. Mahmood
  • R. Shaheen
  • G. Bashir
  • K. A. Shahid
Papers

Abstract

A glass-ceramic of nominal composition Bi1.5Pb0.4Sb0.1Sr2Ca2Cu3Ox was prepared by the melt-quenching method. The subsequent heat treatment of the sample at 860±5°C showedTc(zero) at 94 K. Exposure of the sample for 4 days in air improved itsTc(zero) to 140 K. In another similarly heat-treated sample, a two-step transition in the p-Tcurve at 140 K and at 1 1 1 K, was observed. The superconducting transition appeared to be of a percolative nature.

Keywords

Polymer Heat Treatment Nominal Composition Subsequent Heat Treatment Zero Resistance 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Chapman & Hall 1992

Authors and Affiliations

  • J. A. A. Khan
    • 1
  • N. M. Butt
    • 1
  • A. Mahmood
    • 1
  • R. Shaheen
    • 1
  • G. Bashir
    • 1
    • 2
  • K. A. Shahid
    • 1
    • 2
  1. 1.Nuclear Physics DivisionPinstech, NilorePakistan
  2. 2.Nuclear Materials DivisionPinstech, NilorePakistan

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