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Journal of Materials Science

, Volume 29, Issue 9, pp 2345–2349 | Cite as

Effects of Y2BaCuO5 on the directional growth of YBa2Cu3Ox superconductor

  • Kwangsoo No
  • Daesung Yoon
  • Woo Suck Shin
  • Wonbaek Kim
  • Gunchoo Shim
Papers

Abstract

The effects of Y2BaCuO5 on the microstructure and superconducting properties of YBa2Cu3Ox samples, textured using the directional growth of Y2BaCuO5, BaCuO2 and CuO powder mixtures, were studied. Y2BaCuO5 moved downward as the sample passed up through the hot zone, and this downward movement affected the superconducting properties of the directionally grown samples. The critical temperature increased, and the resistance transition width decreased as the excess 211 content in the powder mixture increased up to a value, beyond which the temperature decreased and the width increased. The critical current densities of the directionally grown samples were scattered because of the presence of uncontrollable severe cracks perpendicular to the growth direction. As the hot-zone temperature increased, the critical current density of the directionally grown sample increased up to a maximum value (>6000 A cm−2) beyond which the critical current density decreased. Compared to data from other studies, the hot-zone temperature required to produce a maximum critical current density was lower.

Keywords

Polymer Microstructure Critical Temperature Material Processing Directional Growth 
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 1994

Authors and Affiliations

  • Kwangsoo No
    • 1
  • Daesung Yoon
    • 1
  • Woo Suck Shin
    • 1
  • Wonbaek Kim
    • 2
  • Gunchoo Shim
    • 2
  1. 1.Department of Ceramic Science and EngineeringKorea Advanced Institute of Science and TechnologyDaejonKorea
  2. 2.Korea Institute of Geology, Mining & MaterialsDaejonKorea

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