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Journal of Materials Science

, Volume 30, Issue 13, pp 3463–3466 | Cite as

A melt process to superconductive fibres of Bi2Sr2CaCu2 oxide

  • C. -H. Hsu
  • J. D. Cohen
  • K. G. Lloyd
  • R. F. Tietz
Article
  • 18 Downloads

Abstract

A particulate precursor of superconductive Bi2Sr2CaCu2 oxide dispersed in an aqueous poly(vinyl alcohol) solution, was shaped into fibres. The fibres fired at a Tmax of 850 °C were very porous. Although they exhibited a Meissner on-set transition at 85 K, electrical resistance at 0.02 Acm−2 at 77 K was still not zero. Exposing the porous fibres to a temperature slightly above their melting point densified them. The treated fibres had a sharp Meissner transition and could carry critical current (Jc) as high as 331 A cm−2 at 77 K. They were also more resistant to the effect of a magnetic field than the fibre fired at 850 °C. Eighty percent of the treated fibre was found to be the superconductive 2 2 1 2 phase.

Keywords

Oxide Polymer Alcohol Magnetic Field Melting Point 
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 1995

Authors and Affiliations

  • C. -H. Hsu
    • 1
  • J. D. Cohen
    • 1
  • K. G. Lloyd
    • 1
  • R. F. Tietz
    • 1
  1. 1.Experimental StationE.I. du Pont de Nemours & Co., Inc.WilmingtonUSA

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