Strain characteristics of Ic in brass-laminated GdBCO CC tape under tension at various low temperature and magnetic field conditions

Zhierwinjay Bautista, Mark Angelo Diaz, Hyung Seop Shin, Jae Hun Lee, Hidetoshi Oguro, Satoshi Awaji

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Transport properties of coated conductor tapes can be affected by stress and strain induced during fabrication, cool-down, and operation. Therefore, it is important to understand the strain/stress dependence of the critical current of the coated conductor tapes in the reversible region under magnetic field considering practical applications such as magnets and coils. In this paper, the strain characteristics of critical current, Ic, in high temperature superconducting (HTS)-coated conductor tapes fabricated using reactive co-evaporation by deposition and reaction reinforced with brass-foil laminate were investigated under external magnetic field at various cryogenic temperatures while applying uniaxial tension. Results show that Ic dependences on magnetic field and temperature were similar between brass-laminated coated conductor and Cu-stabilized tape. The irreversible strain limit and the irreversible stress limit of brass-laminated coated conductor tape increased as temperature decreased from 77 to 20 K. This behavior resulted from thermal hardening of the coated conductor tape at low temperature.

Original languageEnglish
Article number8401004
JournalIEEE Transactions on Applied Superconductivity
Volume28
Issue number3
DOIs
Publication statusPublished - 2018 Apr

Keywords

  • Coated conductor
  • critical current
  • external reinforcement
  • irreversible strain limit
  • magnetic field strain effect

ASJC Scopus subject areas

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

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