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Journal of Materials Science

, Volume 30, Issue 13, pp 3467–3470 | Cite as

Superconductive YBa2Cu3O7−x fibres from an extrudable dispersion of a particulate precursor

  • C. -H. Hsu
  • H. W. Jacobson
  • J. T. Schwartz
  • J. D. ConnollyJr
  • R. F. Tietz
Article
  • 27 Downloads

Abstract

A particulate precursor of YBa2Cu3O7−x was dispersed in a concentrated acetic/formic acid solution of yttrium, barium and copper acetates to form an extensible, viscous mixture. This dispersion was stable, unlike one prepared from superconductive YBa2Cu3O7−x itself. Fibres extruded from the viscous dispersion were fired at 935 °C in the presence of oxygen.

Although the fired fibres were not fully densified, they had a sharp Meissner transition temperature at 90 K and an apparent critical current density (Jc) of 900 A cm−2 (1800 A cm−2 corrected for porosity) at 77 K. The superconducting fibre was sensitive to magnetic field, which is evidence of weak coupling between the superconducting grains.

Keywords

Oxygen Polymer Copper Acetate Magnetic Field 
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
  • H. W. Jacobson
    • 1
  • J. T. Schwartz
    • 1
  • J. D. ConnollyJr
    • 1
  • R. F. Tietz
    • 1
  1. 1.Experimental StationE.I. du Pont de Nemours & Co., Inc.WilmingtonUSA

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