Applied strain effect on superconducting properties for detwinned (Y, Gd)BCO coated conductors

Takumi Suzuki, Satoshi Awaji, Hidetoshi Oguro, Kazuo Watanabe

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We succeeded in the complete detwin of (Y, Gd)BCO coated conductors using a newly developed in-situ tensile apparatus at high temperature. The intensities of (020) and (200) peaks in a longitudinal and a transverse directions of the tape measured by XRD were similar to each other for usual (Y, Gd)BCO coated conductors before annealing. However, the (200) peak disappears for the longitudinal direction after annealing under the tensile stress. It means that the coated conductors are detwinned by annealing under the tensile stress. We found that Tc linearly decreases with increasing strain for the B-domain (b-axis). This behavior is similar with a uniaxial-pressure effect in (Y, Gd) BCO single crystals. However, the strain dependence of Tc for the A-domain (a-axis) behaves as a power-law function, whereas the uniaxial-pressure dependency of Tc for the a-axis is reported to be linear. In addition, the strain dependencies of Jc are similar with those of Tc.

Original languageEnglish
Article number6975146
JournalIEEE Transactions on Applied Superconductivity
Volume25
Issue number3
DOIs
Publication statusPublished - 2015 Jun 1

Keywords

  • (Y Gd)BCO
  • Coated conductor
  • detwin
  • strain effect

ASJC Scopus subject areas

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

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