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

C. H. Hsu, H. W. Jacobson, J. T. Schwartz, J. D. Connolly, R. F. Tietz

Research output: Contribution to journalArticlepeer-review


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.

Original languageEnglish (US)
Pages (from-to)3467-3470
Number of pages4
JournalJournal of Materials Science
Issue number13
StatePublished - Jan 1 1995

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering


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