Orientation-dependent critical currents in Y sub 1 Ba sub 2 Cu sub 3 O sub 7 minus x epitaxial thin films: Evidence for intrinsic flux pinning
- Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)
- IBM Thomas J. Watson Research Center, Yorktown Heights, New York 10598-0218 (United States)
For YBCO epitaxial thin films the basal plane transport critical current density {ital J}{sub {ital c}}, flowing perpendicular to an applied magnetic field {ital H}, depends sensitively on the orientation of the crystal with respect to H. In particular, {ital J}{sub {ital c}} is sharply peaked and greatly enhanced when H is precisely parallel to the copper-oxygen planes. Experiments on a series of epitaxial monolithic and superconductor-insulator multilayer thin films provide clear evidence that the enhancement is a bulk, rather than surface or thin sample, phenomenon. Measurements of the orientation dependence are presented and compared with a model of intrinsic flux pinning'' by the layered crystal structure.
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 5101255
- Report Number(s):
- CONF-900990-; CODEN: APCPC
- Journal Information:
- AIP Conference Proceedings (American Institute of Physics); (United States), Vol. 219:1; Conference: 4. annual conference on superconductivity and its applications, Buffalo, NY (United States), 18-20 Sep 1990; ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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Large, orientation-dependent enhancements of critical currents in Y sub 1 Ba sub 2 Cu sub 3 O sub 7-x epitaxial thin films: Evidence for intrinsic flux pinning
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Related Subjects
BARIUM OXIDES
CURRENTS
COPPER OXIDES
SUPERCONDUCTING FILMS
ANGULAR DISTRIBUTION
YTTRIUM OXIDES
ABLATION
HIGH-TC SUPERCONDUCTORS
MAGNETIC FLUX
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
CHALCOGENIDES
COPPER COMPOUNDS
DISTRIBUTION
FILMS
OXIDES
OXYGEN COMPOUNDS
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
360207* - Ceramics
Cermets
& Refractories- Superconducting Properties- (1992-)