Upper critical field and critical current density in ceramic samples of Pb2Sr2Y0.5Ca0.5Cu3O8+δ

Yoji Koike, Masahiro Masuzawa, Hiromu Sunagawa, Takashi Noji, Hisashi Kawabe, Norio Kobayashi, Yoshitami Saito

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9 Citations (Scopus)

Abstract

The electrical resistance of ceramic samples Pb2Sr2Y0.5Ca0.5Cu3O8+δ with zero resistance at 75 K has been measured in magnetic fields up to 21 T. The superconducting transition curve becomes as broad in the field longitudinal to the current direction as in the transverse field. The value of -dHc2/dT is estimated as 1.7–1.8 T/K. The resistive tail in the lower portion of the transition curve is well expressed as ρ=ρ0 exp (-U0/kBT). The critical current density Jc shows hysteresis with respect to the magnetic field sweep, and is as low as 0.1 A ·cm-2 at 4.2 K in magnetic fields between 1 T and 13 T.

Original languageEnglish
Pages (from-to)L408-L411
JournalJapanese journal of applied physics
Volume29
Issue number3
DOIs
Publication statusPublished - 1990 Mar

Keywords

  • Critical current density
  • Electrical resistance
  • High- T oxide superconductor
  • PbSr YCaCu0
  • PbSrACu0Pb-Sr-Y -Ca-Cu-0
  • Superconducting fluctuation
  • Superconducting transition temperature
  • Thermally activated resistance
  • Upper critical field

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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