TY - JOUR
T1 - Effect of low temperature annealing on doping level and superconducting properties for IBAD/PLD-YBCO coated conductor
AU - Kato, J. Y.
AU - Chikumoto, N.
AU - Sakai, N.
AU - Iijima, Y.
AU - Kakimoto, K.
AU - Saitoh, T.
AU - Watanabe, T.
AU - Yamada, Y.
AU - Tajima, S.
N1 - Funding Information:
This work was supported by the New Energy and Industrial Technology Development Organization (NEDO) as the Collaborative Research and Development of Fundamental Technologies for Superconductivity Applications.
Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2005
Y1 - 2005
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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U2 - 10.1016/j.physc.2005.01.061
DO - 10.1016/j.physc.2005.01.061
M3 - Conference article
AN - SCOPUS:25444447676
VL - 426-431
SP - 1113
EP - 1117
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
IS - II
T2 - Proceedings of the 17th Internatioanl Symposium on Superconductivity (ISS 2004) Advances in Superconductivity
Y2 - 23 November 2004 through 25 November 2004
ER -