Effect of low temperature annealing on doping level and superconducting properties for IBAD/PLD-YBCO coated conductor

J. Y. Kato, N. Chikumoto, N. Sakai, Y. Iijima, K. Kakimoto, T. Saitoh, T. Watanabe, Y. Yamada, S. Tajima

Research output: Contribution to journalConference article

5 Citations (Scopus)

Abstract

The effect of low temperature annealing on the superconducting properties of PLD-YBCO tape has been investigated with varying atmosphere. The T c of the as-prepared sample is 88.5 K, for the sample post-annealed at 200 °C in Ar atmosphere showed 91.5 K, indicating Tc is sensitive to low temperature annealing. In spite of the higher Tc the Jc and μ0Hirr for the Ar-annealed sample were lower than those for the as-prepared sample. This indicates that the as-prepared PLD-YBCO tape is in the carrier overdoped state. It was found that re-annealing in which the sample was slowly cooled from 450 °C in pure oxygen atmosphere could restore the Jc-degradation, demonstrating that oxygen absorption-release occurred reversely.

Original languageEnglish
Pages (from-to)1113-1117
Number of pages5
JournalPhysica C: Superconductivity and its applications
Volume426-431
Issue numberII
DOIs
Publication statusPublished - 2005 Oct 6
Externally publishedYes
EventProceedings of the 17th Internatioanl Symposium on Superconductivity (ISS 2004) Advances in Superconductivity -
Duration: 2004 Nov 232004 Nov 25

Keywords

  • Coated conductor
  • Oxygen content
  • PLD
  • Post-annealing
  • YBCO

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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