AC loss near the glass-liquid transition temperature in high-Tc superconductors - an extended Bean model

T. Fujiyoshi, K. Ohashi, K. Yamafuji, T. Kiss, M. Inoue

Research output: Contribution to journalConference articlepeer-review

2 Citations (Scopus)


The ac loss in high-Tc superconductors near the glass-liquid transition temperature Tg is studied numerically and theoretically. It is found that the ac loss in a slab sample under a dc bias magnetic field depends remarkably on the angular frequency, ω, which cannot be described by the usual critical state model using the critical current density Jc defined with the electric field criterion. However, it is shown that the ac loss including the flux flow loss is described quantitatively by the well known expression based on the Bean critical state model, where Jc is replaced by the effective critical current density Jce(ω). The applicability of the present expression is also discussed.

Original languageEnglish
Pages (from-to)1063-1066
Number of pages4
JournalSuperconductor Science and Technology
Issue number12
Publication statusPublished - Dec 1999
EventProceedings of the 1999 9th International Workshop on Critical Currents in Superconductors, IWCC9 - Madison, WI, USA
Duration: Jul 7 1999Jul 10 1999

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Condensed Matter Physics
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

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