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3. Vortex Pinning/Dynamics in YBCO Films with Jc(77 K) > 3·106A/cm2Studied by Direct Transport Measurements

Author

Pan, V.M., Kasatkin, A.L., Flis, V.S., Komashko, V.A., Svetchnikov, V.L., Pronin, A.V., Snead, C.L., Suenaga, M., and Zandbergen, H.W.

Abstract

Critical current density, Jc, is studied for highly biaxially-oriented YBCO thin films with Jc(77 K) > 3 MA/cm2in a range of magnetic fields, temperatures, angles between magnetic field vector and film c-axis. Jc(H, θ) is shown to be dominated by vortex interaction with high density (> 1011lines/cm2) of linear pins — edge dislocations. A model is developed to describe different vortex arrays behavior in the presence of two-dimensional square network of linear pins.

Published
1999
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