Characteristic strain response of I c in SmBCO coated conductor tapes under magnetic field at 77 K

Hyung Seop Shin, Marlon J. Dedicatoria, Satoshi Awaji, Kazuo Watanabe

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

SmBCO and YBCO coated conductors (CC) showed different critical current, I c degradation behavior with strain showing different I c peak position under self field. Strain effect on I c under magnetic field in REBCO CC tapes was investigated in order to measure and to describe its tolerance and degradation behavior. Katagiri-type tensile testing apparatus was adopted in which magnetic field was applied parallel to the c-axis of coating film using 10 T superconducting magnet at 77 K. Both strain gauge and Nyilas double extensometers were used to measure the strain. In all the REBCO CC tapes investigated, I c(ε,B) strongly depends on magnetic field and their degradation behavior depends on the kind of HTS film and fabrication technique adopted. Differently with YBCO CC tapes, SmBCO CC tapes showed increasing I c strain sensitivity with increasing magnetic field at 77 K and the irreversible strain limit was magnetic field independent over the entire field range studied.

Original languageEnglish
Article number6123197
JournalIEEE Transactions on Applied Superconductivity
Volume22
Issue number3
DOIs
Publication statusPublished - 2012

Keywords

  • Coated conductor
  • REBCO
  • critical current
  • magnetic field
  • strain effect

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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