High-power, pulsed-microwave measurements of critical currents in thin films of Y-Ba-Cu-O and Nb
Journal Article
·
· Physical Review, B: Condensed Matter; (USA)
- IBM Research Division, P.O. Box 218, Yorktown Heights, New York 10598 (US)
The microwave (16.5-GHz) surface resistance of superconducting Y-Ba-Cu-O and Nb thin films is observed to increase with increasing applied microwave power. At higher powers, Nb films have been driven normal. These effects are attributed to high induced-current densities, approaching the critical values. From these measurements, values for the product {lambda}{ital J}{sub {ital c}} have been derived, and for Nb we have obtained the temperature dependence of this quantity. By using known values of {lambda}, the values of {ital J}{sub {ital c}} at microwave frequencies have been obtained.
- OSTI ID:
- 5591821
- Journal Information:
- Physical Review, B: Condensed Matter; (USA), Vol. 43:13; ISSN 0163-1829
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
BARIUM OXIDES
CRITICAL CURRENT
COPPER OXIDES
NIOBIUM OXIDES
YTTRIUM OXIDES
ABLATION
ELECTRIC CONDUCTIVITY
FILMS
LASER RADIATION
MICROWAVE RADIATION
PULSES
SUPERCONDUCTIVITY
SURFACES
TEMPERATURE DEPENDENCE
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
CHALCOGENIDES
COPPER COMPOUNDS
CURRENTS
ELECTRIC CURRENTS
ELECTRICAL PROPERTIES
ELECTROMAGNETIC RADIATION
NIOBIUM COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RADIATIONS
REFRACTORY METAL COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
360204* - Ceramics
Cermets
& Refractories- Physical Properties
360104 - Metals & Alloys- Physical Properties
BARIUM OXIDES
CRITICAL CURRENT
COPPER OXIDES
NIOBIUM OXIDES
YTTRIUM OXIDES
ABLATION
ELECTRIC CONDUCTIVITY
FILMS
LASER RADIATION
MICROWAVE RADIATION
PULSES
SUPERCONDUCTIVITY
SURFACES
TEMPERATURE DEPENDENCE
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
CHALCOGENIDES
COPPER COMPOUNDS
CURRENTS
ELECTRIC CURRENTS
ELECTRICAL PROPERTIES
ELECTROMAGNETIC RADIATION
NIOBIUM COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RADIATIONS
REFRACTORY METAL COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
360204* - Ceramics
Cermets
& Refractories- Physical Properties
360104 - Metals & Alloys- Physical Properties