Effects of oxygen content on the superconducting properties of melt-textured LRE123 superconductors

N. Chikumoto, S. Ozawa, S. I. Yoo, N. Hayashi, M. Murakami

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

The effects of oxygen content on the superconducting transition temperatures, Tc, and magnetic properties of melt-textured LRE123 (LRE = Nd, Sm) superconductors were studied. The oxygen content could be varied by changing the annealing temperature, Ta, in that the oxygen deficiency, δ, monotonically decreased with decreasing the Ta from 600°C to 300°C. A further decrease of Ta to 275°C showed no appreciable change. In both systems the highest Tc was obtained for the samples annealed at 300°C. Magnetic properties were also strongly dependent on the oxygen content, showing that the control of oxygen content is critical for achieving good pinning properties.

Original languageEnglish
Pages (from-to)187-191
Number of pages5
JournalPhysica C: Superconductivity and its applications
Volume278
Issue number3-4
DOIs
Publication statusPublished - 1997 May 1

Keywords

  • Critical current density
  • Irreversibility field
  • LRE123
  • Melt-processing
  • Oxygen deficiency
  • Peak effect

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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