Fabrication and microwave properties of Y-Ba-Cu-O and Bi-Ca-Sr-Cu-O thin films
The authors report their studies on the interaction of Y-Ba-Cu-O and Bi-Ca-Sr-Cu-O thin films with microwaves. The films were prepared on cubic zirconia and magnesium oxide substrates using a modified spray deposition technique. The tested films were about 1-3 /mu/m thick and exhibited good superconducting properties (e.g. for YBCO-on zirconia films the 10-90% transition width was 2 K, and the zero resistance was reached at 89 K). Several test structures have been designed by spraying a mixture of nitrate precursors on heated substrates through very thin stencil masks. The supercurrent dependence on millimeter wavelength microwave illumination was measured, and microwave detection and mixing experiments were performed. The films of both materials exhibited proper ties characteristic for granular superconductors, with Josephson-type coupling at the intergrain connections. The studies also demonstrated that these materials can be successfully used as very sensitive millimeter radiation detectors operational at liquid nitrogen temperatures.
- Research Organization:
- 5262250
- OSTI ID:
- 5969557
- Report Number(s):
- CONF-880812-; TRN: 89-018614
- Journal Information:
- IEEE Trans. Magn.; (United States), Vol. 25:2; Conference: Applied superconductivity conference, San Francisco, CA, USA, 21-25 Aug 1988
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
GENERAL PHYSICS
36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
SUPERCONDUCTING FILMS
FABRICATION
BARIUM OXIDES
BISMUTH OXIDES
CALCIUM OXIDES
COPPER OXIDES
CRITICAL CURRENT
CURRENT DENSITY
EXPERIMENTAL DATA
JOSEPHSON EFFECT
MICROWAVE RADIATION
NITROGEN
PLASMA ARC SPRAYING
RADIATION DETECTORS
STRONTIUM OXIDES
SUPERCONDUCTIVITY
YTTRIUM OXIDES
ZIRCONIUM OXIDES
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BISMUTH COMPOUNDS
CALCIUM COMPOUNDS
CHALCOGENIDES
COPPER COMPOUNDS
CURRENTS
DATA
DEPOSITION
ELECTRIC CONDUCTIVITY
ELECTRIC CURRENTS
ELECTRICAL PROPERTIES
ELECTROMAGNETIC RADIATION
ELEMENTS
FILMS
INFORMATION
MEASURING INSTRUMENTS
NONMETALS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RADIATIONS
SPRAY COATING
STRONTIUM COMPOUNDS
SURFACE COATING
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
ZIRCONIUM COMPOUNDS
420201* - Engineering- Cryogenic Equipment & Devices
360204 - Ceramics
Cermets
& Refractories- Physical Properties
360201 - Ceramics
Cermets
& Refractories- Preparation & Fabrication
656003 - Condensed Matter Physics- Interactions between Beams & Condensed Matter- (1987-)
656100 - Condensed Matter Physics- Superconductivity