Flux creep and pinning potential distribution in zone-melted YBa2Cu3Ox

8 July 1991

journal article
research article
Published by AIP Publishing in Applied Physics Letters

Vol. 59 (2) , 225-227
https://doi.org/10.1063/1.105973

Abstract

Magnetic relaxation data have been taken on zone‐melted and sintered YBa₂Cu₃O_x samples over wide temperature and magnetic field ranges. We have found that magnetic relaxation varies greatly in the samples with different microstructures and crystallographic orientations. Flux‐creep rates have been found to be reduced in the zone‐melted samples owing to large amounts of intragranular crystal defects such as edge dislocations and stacking faults. An important flux‐pinning behavior related to the pinning potential distributions has been observed in the samples. The relationship between microstructural orientation and pinning potential distributions in YBa₂Cu₃O_x is discussed.

Keywords

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