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Journal of Materials Science

, Volume 26, Issue 16, pp 4427–4432 | Cite as

Transport characteristics related with microstructure of (Bi, Pb)-Sr-Ca-Cu-O superconductor prepared by the sol-gel method

  • Akiyoshi Nozue
  • Hiroyuki Nasu
  • Kanichi Kamiya
  • Katsuhisa Tanaka
Papers

Abstract

Differences in the transport characteristics of Bi2Sr2Ca2Cu3Oy (high-Tc phase) superconducting ceramics produced by two-step heat-treatment (calcination and reheating at various temperatures) of metal acetate-derived gels are discussed in relation to their microstructure. Variation of the volume fraction increase rate of the high-Tc phase, which depends on the calcination temperature, results in much difference in the transport characteristics of the resultant samples. Superconducting bodies possessing a higher Tc(end) and critical current density can be obtained at a lower volume fraction increase-rate of the high-Tc phase. It is considered that the origin of the above results is an improvement of the weak-link structure.

Keywords

Polymer Microstructure Calcination Lower Volume Increase Rate 
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

© Chapman & Hall 1991

Authors and Affiliations

  • Akiyoshi Nozue
    • 1
  • Hiroyuki Nasu
    • 1
  • Kanichi Kamiya
    • 1
  • Katsuhisa Tanaka
    • 2
  1. 1.Department of Industrial Chemistry, Faculty of EngineeringMie UniversityTsu-shiJapan
  2. 2.Department of Industrial Chemistry, Faculty of EngineeringKyoto UniversityKyoto-shiJapan

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