Deposition of superconducting thin films by laser ablation processing
Superconducting thin films, approximately 1 ..mu..m thick and 1 cm/sup 2/ in area, have been deposited on fused silica by ablation of the bulk material, YBa/sub 2/Cu/sub 3/O/sub 7-y/, using a pulsed excimer laser. The presence of superconductivity in as-deposited films was established by a novel variation of the technique of microwave absorption, in which the superconducting transition appears as a peak in the temperature dependence of the microwave response. The method is sensitive enough to allow detection of superconductivity in small (approx.0.1 mg) samples and is capable of resolving multiple superconducting phases with slight differences in T/sub c/. As-deposited films have essentially the same value of T/sub c/ (94K) as the bulk material.
- Research Organization:
- The Johns Hopkins University, Applied Physics Laboratory, Laurel, MD 20707
- OSTI ID:
- 6843083
- Report Number(s):
- CONF-871178-; TRN: 88-030192
- Journal Information:
- AIP Conf. Proc.; (United States), Vol. 165:1; Conference: Thin film processing and characterization of high temperature superconductors, Anaheim, CA, USA, 6 Nov 1987
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
BARIUM COMPOUNDS
DEPOSITION
SUPERCONDUCTIVITY
COPPER OXIDES
YTTRIUM COMPOUNDS
ABLATION
ABSORPTION SPECTRA
EXCIMER LASERS
MICROWAVE SPECTRA
PULSES
SILICA
SORPTIVE PROPERTIES
SUPERCONDUCTING FILMS
TEMPERATURE DEPENDENCE
ALKALINE EARTH METAL COMPOUNDS
CHALCOGENIDES
COPPER COMPOUNDS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
FILMS
GAS LASERS
LASERS
MINERALS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SILICON COMPOUNDS
SILICON OXIDES
SPECTRA
SURFACE PROPERTIES
TRANSITION ELEMENT COMPOUNDS
360201* - Ceramics
Cermets
& Refractories- Preparation & Fabrication
360204 - Ceramics
Cermets
& Refractories- Physical Properties