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Microstructure and Critical Current Property in Pb-Doped BiSrCaCuO Bulk Superconductors

  • T. Asano
  • Y. Tanaka
  • M. Fukutomi
  • K. Jikihara
  • J. Machida
  • H. Maeda
Conference paper

Abstract

Highly oriented microstructure in the (Bi,Pb)-Sr-Ca-Cu-0 bulk samples has been obtained by modified powder method. Disk-shaped samples consisting of layered grains with the c-axis of the crystal normal to the disk-surface were prepared by applying an intermediate pressing between the sintering heat treatments. Enhancement in a formation rate of the high-Tc phase and a remarkable improvement in the critical current density have been achieved by this method. A high J value up to 700 A/cm2 at 77 K in zero magnetic field was obtained although it decreased rapidly with application of a small magnetic field less than 100 Oe. Results of the magnetization measurements are also presented.

Keywords

Critical Current Density Sintered Pellet Porous Microstructure Zero Magnetic Field Small Magnetic Field 
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Copyright information

© Springer Japan 1989

Authors and Affiliations

  • T. Asano
    • 1
  • Y. Tanaka
    • 1
  • M. Fukutomi
    • 1
  • K. Jikihara
    • 2
  • J. Machida
    • 3
  • H. Maeda
    • 1
  1. 1.Tsukuba LaboratoriesNational Research Institute for MetalsTsukuba, 305Japan
  2. 2.Hiratsuka Research LaboratorySumitomo Heavy Industries, Ltd.Hiratsuka, 254Japan
  3. 3.Central Research LaboratoryMitsui Mining & Smelting Co., Ltd.Ageo, Saitama, 362Japan

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