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Microstructure and Electrical Properties of Bulk High-Tc Superconductors

  • U. Balachandran
  • M. J. McGuire
  • K. C. Goretta
  • C. A. Youngdahl
  • Donglu Shi
  • R. B. Poeppel
  • S. Danyluk

Abstract

Bulk forms of the superconductors Y-Ba-Cu-O and Bi-Sr-Ca-Cu-O generally have a low critical current density (Jc). At 77 K in zero magnetic field, values greater than about 103 A cm−2 have seldom been obtained. The most notable exceptions are for melt-textured rods and filaments,1–3 for which Jc values often exceed 104 A cm−2. Values of Jc approaching 104 A cm−2 have also been reported for wires and tapes processed in Ag tubes.4–6 Little information about the microstructures of these composite conductors has emerged. This work was undertaken to examine the relationships between processing, microstructure, and electrical properties for high-temperature superconductors processed as pellets or Ag-clad tapes.

Keywords

Critical Current Density Bulk Form Zero Magnetic Field High Green Densi YBCO Powder 
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 Science+Business Media New York 1990

Authors and Affiliations

  • U. Balachandran
    • 1
  • M. J. McGuire
    • 1
  • K. C. Goretta
    • 1
  • C. A. Youngdahl
    • 1
  • Donglu Shi
    • 1
  • R. B. Poeppel
    • 1
  • S. Danyluk
    • 2
  1. 1.Argonne National LaboratoryArgonneUSA
  2. 2.University of Illinois at ChicagoChicagoUSA

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