TY - JOUR
T1 - Study of compositional and artificial pinning effects on superconductivity of pulsed-laser deposited Gd-123 films for coated conductor applications
AU - Lee, S.
AU - Hirose, K.
AU - Yokoyama, T.
AU - Chikumoto, N.
AU - Kakeshita, T.
AU - Nakao, K.
N1 - Funding Information:
Manuscript received August 29, 2006. This work was supported by New Energy and Industrial Technology Development Organization (NEDO) as the Collaborative Research and Development for Fundamental Technologies for Superconductivity Applications.
Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2007/6
Y1 - 2007/6
N2 - Critical temperature (Tc), critical current density (J c) and flux pinning characteristics of superconducting films are crucially influenced by their chemical composition. We studied the effect of small composition variations on superconductivity of GdBa2Cu 3O7-x (Gd-123) films grown by pulsed laser deposition (PLD) technique. Several pathways to control the composition of Gd-123 films were studied: variation of clearance between edge of laser plume and substrate surface, utilization of off-stoichiometric target compositions and addition of BaZrO3. Positive effect of Ba-deficiency on superconductivity of Gd-123 films was shown. Comparative study of Gd-123 and Y-123 films on CeO 2 capped Gd2Zr2O7(GZO) buffered Hastelloy tapes confirmed the advantage of Gd-based compositions for application in magnetic fields and their high potential for fabrication of long-length coated conductors.
AB - Critical temperature (Tc), critical current density (J c) and flux pinning characteristics of superconducting films are crucially influenced by their chemical composition. We studied the effect of small composition variations on superconductivity of GdBa2Cu 3O7-x (Gd-123) films grown by pulsed laser deposition (PLD) technique. Several pathways to control the composition of Gd-123 films were studied: variation of clearance between edge of laser plume and substrate surface, utilization of off-stoichiometric target compositions and addition of BaZrO3. Positive effect of Ba-deficiency on superconductivity of Gd-123 films was shown. Comparative study of Gd-123 and Y-123 films on CeO 2 capped Gd2Zr2O7(GZO) buffered Hastelloy tapes confirmed the advantage of Gd-based compositions for application in magnetic fields and their high potential for fabrication of long-length coated conductors.
KW - Laser ablation
KW - Magnetic field measurement
KW - Rare earth compounds
KW - Superconducting films
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U2 - 10.1109/TASC.2007.898332
DO - 10.1109/TASC.2007.898332
M3 - Article
AN - SCOPUS:34547489922
SN - 1051-8223
VL - 17
SP - 3278
EP - 3281
JO - IEEE Transactions on Applied Superconductivity
JF - IEEE Transactions on Applied Superconductivity
IS - 2
ER -