Flux creep limited current in YBa2Cu3O7-† ceramics under applied fields

Uri Dai, Leandro R. Tessler, Nir Hess, Guy Deutscher, Nicole Bontemps, Geneviève Vetter, Francine Queyroux, Roger Nahoum, Michel Lagües, Phillipe Mocaer

Research output: Contribution to journalArticlepeer-review


We present measurements of the field dependence of critical currents in YBa2Cu2O7-† ceramics prepared by the sintering and by the sol-gel reaction methods. For high quality samples we find a region in magnetic fields where the transport critical current decreases like H-n with n=0.52±0.06. This behavior is qualitatively similar to that observed in single grains, interpreted as indicative of flux creep rather than Josephson limited critical current.

Original languageEnglish
Pages (from-to)699-700
Number of pages2
JournalPhysica C: Superconductivity and its Applications
Issue numberPART 1
StatePublished - Dec 1989


FundersFunder number
U.S.-Israel Binational Science Foundation


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