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

Conference · Mon Jan 01 00:00:00 EST 1990

OSTI ID:6815501

Christen, D K; Klabunde, C E; Feenstra, R; Lowndes, D H; Norton, D; Budai, J D; Kerchner, H R; Boatner, L A ^[1]; Thompson, J R ^[2]; Narayan, J; Singh, R ^[3]

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1. Oak Ridge National Lab., TN (USA)
2. Oak Ridge National Lab., TN (USA) Tennessee Univ., Knoxville, TN (USA)
3. North Carolina State Univ., Raleigh, NC (USA)

The basal plane transport critical current density J{sub c} of YBCO epitaxial thin films is strongly anisotropic, leading to large enhancements of J{sub c} when H is precisely parallel to the copper-oxygen planes. Experimental evidence shows that the enhancement is a bulk phenomenon, and the orientation dependence is compared with a model of intrinsic flux pinning'' by the layered crystal structure. 7 refs., 2 figs.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: DOE/ER
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 6815501
• Report Number(s): CONF-900806-5; ON: DE90009424
• Resource Relation: Conference: 19. international conference on low temperature physics, Brighton (UK), 16-22 Aug 1990
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BARIUM OXIDES
CRITICAL CURRENT
COPPER OXIDES
HIGH-TC SUPERCONDUCTORS
YTTRIUM OXIDES
CRYSTAL STRUCTURE
CURRENT DENSITY
MAGNETIC PROPERTIES
SUPERCONDUCTING FILMS
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
CHALCOGENIDES
COPPER COMPOUNDS
CURRENTS
ELECTRIC CURRENTS
FILMS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
360204* - Ceramics
Cermets
& Refractories- Physical Properties
360202 - Ceramics
Cermets
& Refractories- Structure & Phase Studies
656100 - Condensed Matter Physics- Superconductivity