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

doi:10.1016/j.physc.2005.01.061

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 journal › Conference 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 T_c is sensitive to low temperature annealing. In spite of the higher T_c the J_c and μ₀H_irr 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 J_c-degradation, demonstrating that oxygen absorption-release occurred reversely.

Original language	English
Pages (from-to)	1113-1117
Number of pages	5
Journal	Physica C: Superconductivity and its applications
Volume	426-431
Issue number	II
DOIs	https://doi.org/10.1016/j.physc.2005.01.061
Publication status	Published - 2005 Oct 6
Externally published	Yes
Event	Proceedings of the 17th Internatioanl Symposium on Superconductivity (ISS 2004) Advances in Superconductivity - Duration: 2004 Nov 23 → 2004 Nov 25

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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

Kato, J. Y., Chikumoto, N., Sakai, N., Iijima, Y., Kakimoto, K., Saitoh, T., ... Tajima, S. (2005). Effect of low temperature annealing on doping level and superconducting properties for IBAD/PLD-YBCO coated conductor. Physica C: Superconductivity and its applications, 426-431(II), 1113-1117. https://doi.org/10.1016/j.physc.2005.01.061

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 journal › Conference article

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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.

PY - 2005/10/6

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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.

KW - Coated conductor

KW - Oxygen content

KW - PLD

KW - Post-annealing

KW - YBCO

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10.1016/j.physc.2005.01.061