Systematic change of flux pinning in (Dy,RE)123 and (Y,RE)123 melt-solidified bulks with unit cell orthorhombicity

Y. Setoyama, J. Shimoyama, S. Yamaki, A. Yamamoto, H. Ogino, K. Kishio, Satoshi Awaji

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

RE-mixing is one of the most effective ways to enhance critical current density Jc of RE123 melt-solidified bulks; however, the intrinsic effects of RE-mixing on Jc have not yet been well clarified. Through synthesis and analysis of eight types of melt-solidified bulks containing one or two RE elements, the effects of RE-mixing on Jc-H characteristics were systematically investigated. It was revealed that RE-mixed bulks show higher Jc than RE123 bulks accompanied by the secondary peaks of Jc in a high field region. Analyses on the relationship between Jc and orthorhombicity suggested that the RE substitution level for Ba sites can be controlled by RE-mixing to enhance Jc in magnetic fields. Combined with the results of magnetic measurements at 40 and 60 K up to 15 T, RE-mixed bulks originating from Y123 powders were found to be high potential materials for high field generating applications.

Original languageEnglish
Article number015014
JournalSuperconductor Science and Technology
Volume28
Issue number1
DOIs
Publication statusPublished - 2015 Jan 1

Keywords

  • RE-mixing
  • REBaCuOy melt-solidified bulks
  • critical current density

ASJC Scopus subject areas

  • Ceramics and Composites
  • Condensed Matter Physics
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

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