Development of superconducting electrode capacitor using a YBa sub 2 Cu sub 3 O sub 7 minus x thick film and Y sub 2 BaCuO sub 5 dielectric
- Mechanical and Electrical Engineering Dept., Florida International Univ., Miami, FL (US)
Different phases in the YO{sub 1.5}-BaO-CuO phase diagram were evaluated for dielectric properties and compatibility with subsequent firing of a YBa{sub 2}Cu{sub 3}O{sub 7{minus}x} thick film. Y{sub 2}BaCuO{sub 5} (211) was chosen for capacitor manufacture because it showed no reaction with the YBa{sub 2}Cu{sub 3}O{sub 7{minus}x} (123) thick film upon sintering. AC field exclusion confirmed that superconductivity of the 123 thick film on the 211 substrate with T{sub c} at 93{degrees}K. Scanning electron microscopy of the interface between the 211 substrate and the 123 thick film showed neither a reaction or the formation of a third phase. Capacitor samples were manufactured in various sizes. The authors of this paper conclude that 211 substrates are suitable for the formation of a low-loss capacitor with superconducting electrodes.
- OSTI ID:
- 5690379
- Report Number(s):
- CONF-900944--
- Journal Information:
- IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States), Journal Name: IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States) Vol. 27:2; ISSN IEMGA; ISSN 0018-9464
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
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360204 -- Ceramics
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665412* -- Superconducting Devices-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CAPACITORS
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
DIAGRAMS
DIELECTRIC PROPERTIES
ELECTRIC CONDUCTIVITY
ELECTRICAL EQUIPMENT
ELECTRICAL PROPERTIES
ELECTRON MICROSCOPY
EQUIPMENT
FABRICATION
FILMS
IMPEDANCE
INTERFACES
MICROSCOPY
OXIDES
OXYGEN COMPOUNDS
PHASE DIAGRAMS
PHASE STUDIES
PHYSICAL PROPERTIES
SINTERING
SUPERCONDUCTIVITY
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES