The role of intergrain junctions in transport critical current irreversibility

K. Vad, S. Mészáros, N. Hegman, G. Halász

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1 Citation (Scopus)

Abstract

The magnetic field dependence of voltage at constant measuring currents of YBa2Cu3O7-δ bulk ceramics and Bi(Pb)SrCaCuO screen printed films were studied at different temperatures so as to obtain information on critical current irreversibility. Two ranges of these curves were found to show sensitivity to magnetic field. They suggest that the two types of superconducting medium, i.e., the Josephson and Abrikosov medium, result in two different voltage generation mechanisms. It is shown that the Josephson medium plays a role in both low and high magnetic field critical current irreversibility.

Original languageEnglish
Pages (from-to)491-495
Number of pages5
JournalJournal of Superconductivity
Volume5
Issue number6
DOIs
Publication statusPublished - Dec 1 1992

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Keywords

  • Critical current
  • granular superconductivity
  • hysteresis
  • irreversibility

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Physics and Astronomy (miscellaneous)

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