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Journal of Materials Science

, Volume 30, Issue 14, pp 3607–3611 | Cite as

The study of microstructure of Bi, Pb-Sr-Ca-Cu-O superconductors prepared by multiple intermediate processing

  • N. Hudáková
  • V. Plecháček
  • K. KníŽek
Papers
  • 22 Downloads

Abstract

The influence of a multistep intermediate pressing and sintering process on microstructure and the relation between microstructure and values of critical current density, Jc, in Bi, Pb-Sr-Ca-Cu-O high-Tc polycrystalline superconductors was studied. The Jc values increased with increasing number of pressing and sintering steps, n, only up to a certain value of n. The increase of Jc was reached by improvement of connections between grains due to compacting and by the alignment of superconducting grains in the c-axis direction. The maximal value of Jc was found for n = 5. The crack development is responsible for decreasing Jc for a higher number of steps.

Keywords

Polymer Microstructure Material Processing Critical Current Density Crack Development 
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 1995

Authors and Affiliations

  • N. Hudáková
    • 1
  • V. Plecháček
    • 2
  • K. KníŽek
    • 2
  1. 1.Institute of Experimental PhysicsSlovak Academy of SciencesKošiceSlovakia
  2. 2.Institute of PhysicsAcademy of Sciences of Czech RepublicPraha 6Czech Republic

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