Superconducting properties of melt-textured RE-Ba-Cu-O (RE: Ho, Er and Y) bulk superconductors with various RE211 contents

S. Nariki, N. Sakai, M. Murakami

Research output: Contribution to journalConference article

11 Citations (Scopus)

Abstract

We investigated the effect of RE2BaCuO5 (RE211) contents on the superconducting properties of melt-textured RE-Ba-Cu-O bulk superconductors (RE: Ho, Er and Y). REBa2Cu3Oy (RE123) samples containing 5-40 mol% of RE211 were fabricated with the cold-seeding method in air using an Nd123 bulk seed crystal. The superconducting properties of the Ho-Ba-Cu-O samples were strongly affected by the Ho211 content and the oxygen-annealing temperature. In the Jc-B curves of the Ho-Ba-Cu-O samples with low-Ho211 contents, the secondary peak effect was clearly observed. The peak position shifted to lower fields with increasing oxygen-annealing temperature, presumably due to an increase in oxygen-vacancies. The secondary peak effect was also found in the Er- and Y-Ba-Cu-O samples with 5 mol% of RE211.

Original languageEnglish
Pages (from-to)516-520
Number of pages5
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

  • Critical current density
  • Er-Ba-Cu-O
  • Ho-Ba-Cu-O
  • Melt processing
  • Secondary 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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