Recent progress in melt-processed (Nd-Sm-Gd)Ba2Cu 3Oy superconductors

M. Muralidhar, S. Nariki, M. Jirsa, N. Sakai, M. Murakami

Research output: Contribution to journalConference article

1 Citation (Scopus)

Abstract

We have prepared (Nd,Sm,Gd)Ba2Cu3Oy "NSG-123" with various contents of (Nd,Sm,Gd)2BaCuO 5 "NSG-211" or Gd2BaCuO5 "Gd-211" with the aim of optimizing flux pinning. Microstructure observed by transmission electron microscopy exhibited a high density of RE-rich RE1+x Ba2-xCu3Oy (RE-123ss) clusters with their size and dispersion depending on the initially added 211 content. Gd-211 10 mol% distributed as small clusters ranging from 3 to 10 nm in size enhanced pinning at intermediate fields. The magnetization measurements suggested that the optimum oxygen pressure during melt-growth process for this system was around 1% pO2. It was confirmed that this material can be grown into single domain more then 40 mm in diameter.

Original languageEnglish
Pages (from-to)473-478
Number of pages6
JournalPhysica C: Superconductivity and its applications
Volume392-396
Issue numberPART 1
DOIs
Publication statusPublished - 2003 Oct 1
Externally publishedYes
EventProceedings of the 15th International Symposium on Superconduc - Yokohama, Japan
Duration: 2002 Nov 112002 Nov 13

Keywords

  • Flux pinning for material index
  • LRE-Ba CuO
  • Melt-textured
  • NSG-123
  • TEM

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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