TY - JOUR
T1 - Angular dependence of critical current density in Y-Ba-Cu-O thin films
AU - Horide, T.
AU - Matsumoto, K.
AU - Ichinose, A.
AU - Yoshida, Y.
AU - Horii, S.
AU - Mukaida, M.
AU - Osamura, K.
N1 - Funding Information:
Manuscript received October 4, 2004. This work was supported by a CREST project of Japan Science Technology Agency. T. Horide, K. Matsumoto, and K. Osamura are with the Department of Materials Science and Engineering, Kyoto University, Kyoto 606-8501, Japan (e-mail: tomoya.horide@t04.mbox.media.kyoto-u.ac.jp; matsu@hightc. mtl.kyoto-u.ac.jp; osamura@hightc.mtl.kyoto-u.ac.jp). A. Ichinose is with Central Research Institute of Electric Power Industry, Yokosuka 240-0196, Japan (e-mail: ai@criepi.denken.or.jp). Y. Yoshida is with the Department of Energy Engineering and Science, Nagoya University, Nagoya 464-8603, Japan (e-mail: yoshida@nuee.nagoya-u.ac.jp). S. Horii is with the Department of Superconductivity, University of Tokyo, Tokyo 113-8656, Japan (e-mail: tholy@mail.ecc.u-tokyo.ac.jp). M. Mukaida is with the Department of Electrical and Information Engineering, Yamagata University, Yonezawa 992-8510, Japan (e-mail: mukaida@ yz.yamagata-u.ac.jp). Digital Object Identifier 10.1109/TASC.2005.849417
PY - 2005/6
Y1 - 2005/6
N2 - c-axis oriented YBa2Cu3O7-δ (YBCO) thin films for coated conductor applications have anisotropic infobehaviors of critical current density (Jc) in magnetic fields. The anisotropic vortex pinning in YBCO films fabricated on SrTiO3 (100) single crystal substrates by pulsed laser deposition was investigated based on the field angular dependencies of Jc, which were measured using the constant Lorentz force configuration (CLFC) and a variable Lorentz force configuration (VLFC). Jc(θ) as a function of angle θ between the ab-plane direction and the magnetic field direction had a sharp peak at θ = 0°, which was attributed to the intrinsic pinning. Besides, Jc(θ) did not depend on the intensity of the Lorentz force when the magnetic field was applied near 9 = 90°. This indicates that J c(θ) in this region is determined by the depinning of the vortex segment trapped by the pinning centers parallel to c-axis of the film. A transition from the intrinsic pinning to the extrinsic pinning is also discussed.
AB - c-axis oriented YBa2Cu3O7-δ (YBCO) thin films for coated conductor applications have anisotropic infobehaviors of critical current density (Jc) in magnetic fields. The anisotropic vortex pinning in YBCO films fabricated on SrTiO3 (100) single crystal substrates by pulsed laser deposition was investigated based on the field angular dependencies of Jc, which were measured using the constant Lorentz force configuration (CLFC) and a variable Lorentz force configuration (VLFC). Jc(θ) as a function of angle θ between the ab-plane direction and the magnetic field direction had a sharp peak at θ = 0°, which was attributed to the intrinsic pinning. Besides, Jc(θ) did not depend on the intensity of the Lorentz force when the magnetic field was applied near 9 = 90°. This indicates that J c(θ) in this region is determined by the depinning of the vortex segment trapped by the pinning centers parallel to c-axis of the film. A transition from the intrinsic pinning to the extrinsic pinning is also discussed.
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U2 - 10.1109/TASC.2005.849417
DO - 10.1109/TASC.2005.849417
M3 - Article
AN - SCOPUS:22144491513
SN - 1051-8223
VL - 15
SP - 3734
EP - 3737
JO - IEEE Transactions on Applied Superconductivity
JF - IEEE Transactions on Applied Superconductivity
IS - 2 PART III
ER -