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Flux Pinning Associated with Y2BaCuO5 Precipitates in Melt-Processed YBa2Cu3Ox

  • S. Sengupta
  • Donglu Shi
  • J. S. Luo
  • V. R. Todt
  • Z. Wang
  • C. Varanasi
  • P. J. McGinn
  • U. Balachandran
  • K. C. Goretta
Part of the An International Cryogenic Materials Conference Publication book series (ACRE, volume 40)

Abstract

Magnetization measurements were performed on melt-processed samples prepared by various processing techniques. Fine Y2BaCuO5 precipitates (~100 Å) were observed by transmission electron microscopy in the samples prepared by melt-processed-meltgrowth and solid-liquid-melt-growth techniques. These precipitates were not observed in samples prepared by conventional melt-texturing techniques. Critical current density, Jc, depended on final microstructure; a larger magnetic hysteresis was always associated with the presence of the fine precipitates. However, the flux-pinning strengths of these precipitates decreased at higher temperatures.

Keywords

Critical Current Density Spherical Cavity Flux Line Fine Precipitate Large Precipitate 
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 1994

Authors and Affiliations

  • S. Sengupta
    • 1
    • 4
  • Donglu Shi
    • 1
  • J. S. Luo
    • 2
  • V. R. Todt
    • 1
  • Z. Wang
    • 1
  • C. Varanasi
    • 4
  • P. J. McGinn
    • 4
  • U. Balachandran
    • 3
  • K. C. Goretta
    • 3
  1. 1.Materials Science DivisionArgonne National LaboratoryArgonneUSA
  2. 2.Chemical Technology DivisionArgonne National LaboratoryArgonneUSA
  3. 3.Energy Technology DivisionArgonne National LaboratoryArgonneUSA
  4. 4.Center of Materials Science and Engineering Department of Electrical EngineeringUniversity of Notre DameNotre DameUSA

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