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ON THE LIMITING FACTORS OF THE CRITICAL CURRENT DENSITY IN HIGH-CRITICAL TEMPERATURE SUPERCONDUCTING CERAMICS.

Author(s) : MIU L.

Type of article: Article

Summary

THE TEMPERATURE DEPENDENCE OF THE CRITICAL CURRENT DENSITY AT HIGH TEMPERATURES AND IN WEAK APPLIED MAGNETIC FIELD FOR YBCO CERAMIC SAMPLES WITH A PRONOUNCED GRANULAR CHARACTER IS ANALYZED. THE EXPERIMENTAL RESULTS CANBE EXPLAINED IN TERMS OF THERMALLY ACTIVATED MOTION OF THE INTERGRAIN JOSEPHSON VORTICES AT GRAIN BOUNDARIES, WHICH MAY BE AN INDICATION THAT THE ACTUAL LIMITING FACTOR FOR THE CRITICAL CURRENT DENSITY RESULTS FROM A WEAK PINNING FORCE DENSITY FOR THE INTERGRAIN VORTICES RATHER THAN FROM THE WEAK-LINK QUENCHING.

Details

  • Original title: ON THE LIMITING FACTORS OF THE CRITICAL CURRENT DENSITY IN HIGH-CRITICAL TEMPERATURE SUPERCONDUCTING CERAMICS.
  • Record ID : 1992-0966
  • Languages: English
  • Source: J. Supercond. - vol. 3 - n. 4
  • Publication date: 1990/12
  • Document available for consultation in the library of the IIR headquarters only.

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