Flux pinning by a-axis grains in c-axis-oriented Y-Ba-Cu-O films
- 25 May 1992
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 60 (21), 2686-2688
- https://doi.org/10.1063/1.107471
Abstract
We have investigated the relationship between the microstructures and pinning forces by measuring the magnetic‐field dependence and angular dependence of Jc in several kinds of YBCO thin films having different microstructures. A high‐Jc value was kept even when the magnetic field was applied perpendicular to the film plane in the case of a c‐axis‐oriented film which was studded with a‐axis‐oriented grains. The boundaries between the a‐axis‐oriented grain and the c‐axis‐oriented grain are considered to be effective as pinning centers.Keywords
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