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Flux pinning and critical current density of a Y1Ba2Cu3O7-x superconducting thin film

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2 Author(s)
Matsuura, Takashi ; Basic High Technology Laboratories, Sumitomo Electric Ind., Ltd., 1‐1 Koyakita 1‐Chome, Itami, Hyogo 664, Japan ; Itozaki, H.

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The relation between the critical current density and the pinning potential of an epitaxial Y1Ba2Cu3O7-X thin film was investigated. The pinning potential was evaluated from the temperature dependence of the resistivity in various values of a magnetic field. The pinning potential was inversely proportional to the applied magnetic field and had the anisotropy in the direction of the magnetic field. Critical current density of the thin film was calculated using the obtained pinning potential. This calculated result was consistent with the critical current density measured by a four‐probe method. 

Published in:
Applied Physics Letters  (Volume:59 ,  Issue: 10 )

Date of Publication: Sep 1991

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