Imaging high-temperature superconducting films

Journal Article · Wed May 15 00:00:00 EDT 1991 · Journal of Applied Physics; (USA)

DOI:https://doi.org/10.1063/1.347610· OSTI ID:5690199

Batalla, E; Zwartz, E G; Wright, L S ^[1]; Raider, S I; Gupta, A ^[2]

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1. Physics Department, Royal Military College, Kingston, Ontario K7K 5L0, Canada (CA)
2. IBM Thomas J. Watson Research Center, P.O. Box 218, Yorktown Heights, New York 10598 (USA)

A magneto-optically active glass, Ce(PO{sub 3}){sub 3}, was used to image field penetration into three superconducting films of YBa{sub 2}Cu{sub 3}O{sub 7} that were laser ablated on (100)-oriented SrTiO{sub 3} substrates. The magnetic-field profile in these films was mapped using the Faraday effect in an external field of 92 mT for two of the films and 181 mT for the third film. These contours show regions where flux had easily penetrated, indicating weak pinning, and other regions that were strongly pinning. From the measured field gradients, it was determined that {ital J}{sub {ital c}} varies by at least an order of magnitude across the surface of the films.

• OSTI ID: 5690199
• Journal Information: Journal of Applied Physics; (USA), Vol. 69:10; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BARIUM OXIDES
PENETRATION DEPTH
COPPER OXIDES
MAGNETIC FLUX
IMAGES
YTTRIUM OXIDES
ABLATION
CERIUM PHOSPHATES
FARADAY EFFECT
GLASS
HIGH-TC SUPERCONDUCTORS
LASER-RADIATION HEATING
MAGNETIC FIELDS
MAGNETO-OPTICAL EFFECTS
MAPPING
STRONTIUM TITANATES
SUBSTRATES
SUPERCONDUCTING FILMS
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
CERIUM COMPOUNDS
CHALCOGENIDES
COPPER COMPOUNDS
FILMS
HEATING
OXIDES
OXYGEN COMPOUNDS
PHOSPHATES
PHOSPHORUS COMPOUNDS
PLASMA HEATING
RARE EARTH COMPOUNDS
STRONTIUM COMPOUNDS
SUPERCONDUCTORS
TITANATES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
360204* - Ceramics
Cermets
& Refractories- Physical Properties