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


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.


Polymer Microstructure Calcination Lower Volume Increase Rate 
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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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