Flux pinning properties of TFA-MOD (Y,Gd)Ba2Cu3O x tapes with BaZrO3 nanoparticles

Satoshi Awaji, Masafumi Namba, Kazuo Watanabe, Masashi Miura, Masateru Yoshizumi, Teruo Izumi, Yuh Shiohara

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

A high critical current density Jc with a nearly isotropic angular dependence at 77.3K was recently obtained by the introduction of nanoparticles to (Y,RE)Ba2Cu3Oy (RE123, RE = Sm, Gd)-coated conductors prepared by trifluoroacetate metal-organic deposition (TFA-MOD). The flux pinning properties were evaluated on the basis of detailed measurements of the upper critical field, the irreversibility field and the critical current density of the TFA-MOD RE123-coated conductor. We found that strong random pinning by the BaZrO3 nanoparticles and weak c-axis correlated pinning by twin boundaries functioned cooperatively in nanoparticles introduced to (Y, Gd)123-coated conductors prepared by TFA-MOD. The coexistence of two different pinning centers played an important role in the nearly isotropic angular dependence of Jc.

Original languageEnglish
Article number014006
JournalSuperconductor Science and Technology
Volume23
Issue number1
DOIs
Publication statusPublished - 2010 Feb 22

ASJC Scopus subject areas

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

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