Spatial variation of superconducting properties in a large grain of Y-Ba-Cu-O

S. Takebayashi, S. I. Yoo, M. Murakami

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

We report positional dependence of superconducting properties in a Y-Ba-Cu-O single grain fabricated with a top seeded melt growth technique. It is found that the distributions of the second phase of Y2BaCuO5 (Y211) inclusions and the magnetic properties vary with position in a large sample. The peak effect is observed in the region where the volume fraction of the Y211 particles is low. The optimum oxygen-annealing temperature for achieving high critical current is also dependent on the position in a large bulk. The regional distributions of the microstructure and the properties are not arbitrarily scattered but reasonably depend on the spatial distributions of growth rate and growth direction in a large grain.

Original languageEnglish
Pages (from-to)465-472
Number of pages8
JournalPhysica C: Superconductivity and its applications
Volume383
Issue number4
DOIs
Publication statusPublished - 2003 Jan 1

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Keywords

  • Melt textured
  • Oxygen annealing
  • Spatial variation
  • Y-Ba-Cu-O

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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