Angular dependence of critical current density in Y-Ba-Cu-O thin films

T. Horide, K. Matsumoto, A. Ichinose, Y. Yoshida, S. Horii, Masashi Mukaida, K. Osamura

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)3734-3737
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Volume15
Issue number2 PART III
DOIs
Publication statusPublished - Jun 1 2005
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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    Horide, T., Matsumoto, K., Ichinose, A., Yoshida, Y., Horii, S., Mukaida, M., & Osamura, K. (2005). Angular dependence of critical current density in Y-Ba-Cu-O thin films. IEEE Transactions on Applied Superconductivity, 15(2 PART III), 3734-3737. https://doi.org/10.1109/TASC.2005.849417