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

J. Y. Kato, N. Chikumoto, Naomichi 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

Fingerprint

Ion beam assisted deposition
Pulsed laser deposition
conductors
Doping (additives)
Annealing
Tapes
annealing
Oxygen
atmospheres
tapes
Temperature
oxygen
Degradation
1-dodecylpyridoxal
degradation

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

Cite this

Effect of low temperature annealing on doping level and superconducting properties for IBAD/PLD-YBCO coated conductor. / Kato, J. Y.; Chikumoto, N.; Sakai, Naomichi; Iijima, Y.; Kakimoto, K.; Saitoh, T.; Watanabe, T.; Yamada, Y.; Tajima, S.

In: Physica C: Superconductivity and its applications, Vol. 426-431, No. II, 06.10.2005, p. 1113-1117.

Research output: Contribution to journalConference article

Kato, J. Y. ; Chikumoto, N. ; Sakai, Naomichi ; Iijima, Y. ; Kakimoto, K. ; Saitoh, T. ; Watanabe, T. ; Yamada, Y. ; Tajima, S. / Effect of low temperature annealing on doping level and superconducting properties for IBAD/PLD-YBCO coated conductor. In: Physica C: Superconductivity and its applications. 2005 ; Vol. 426-431, No. II. pp. 1113-1117.
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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.",
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AU - Kato, J. Y.

AU - Chikumoto, N.

AU - Sakai, Naomichi

AU - Iijima, Y.

AU - Kakimoto, K.

AU - Saitoh, T.

AU - Watanabe, T.

AU - Yamada, Y.

AU - Tajima, S.

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N2 - 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.

AB - 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.

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