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Temperature and Magnetic Field Dependence of the Critical Current in Polycrystalline Ba2YCu3Oy

  • H. Obara
  • H. Yamasaki
  • Y. Kimura
  • Y. Higashida
  • T. Ishihara
Conference paper

Abstract

Temperature and magnetic field dependence on the critical current density J c of polycrystalline high-T c oxide superconductor, Ba 2 YCu 3 O y , have been measured. In the low magnetic field range, 0.6 ~ 7 kOe, the J c behavior changed at around 70 K. Below 70 K, J c showed different temperature dependence between field cooling and zero-field cooling, that is, the J c value measured when the sample was cooled in a fixed magnetic field, was different from that measured when the sample was cooled in zero magnetic field and then a magnetic field was applied. Above 70 K, however, such different temperature dependence on J c was not observed. These experimental results can be attributed to the effects of anisotropy, and a crossover between the two-and three-dimensional superconductivity is considered to occur.

Keywords

Critical Current Density Magnetic Field Dependence Field Cool Oxide Superconductor Dimensional Crossover 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Japan 1989

Authors and Affiliations

  • H. Obara
    • 1
  • H. Yamasaki
    • 1
  • Y. Kimura
    • 1
  • Y. Higashida
    • 2
  • T. Ishihara
    • 2
  1. 1.Electrotechnical LaboratoryTsukuba, 305Japan
  2. 2.Japan Fine Ceramics CenterAtsuta-ku, Nagoya, 456Japan

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