Superconducting YBa{sub 2}Cu{sub 3}O{sub 7} bolometer on polycrystalline diamond
Book
·
OSTI ID:86176
- Excel Superconductor, Inc., Bohemia, NY (United States)
The authors have deposited superconducting YBCO (YBa{sub 2}Cu{sub 3}O{sub 7}) thin films on polycrystalline diamond using a composite Si/YSZ (yttria stabilized zirconia) diffusion barrier. 10--20 micron thick, free standing diamond films were coated with a micron thick layer of amorphous Si by plasma CVD. This was vacuum annealed at 700 C to crystallize Si prior to the in-situ deposition of YSZ and YBCO by laser ablation. A primary layer of Si was found essential to avoid the peeling of the multilayer structure during the cooling of the substrates. A T{sub c{minus}zero} = 50K was observed for the best films. A bolometer fabricated from this film exhibited a 18V/W responsivity and NEP = 6.3 {times} 10{sup {minus}9}W/{radical}Hz at 60K. Both the buffer layers and YBCO were polycrystalline. They believe single crystal Si backing CVD grown diamond can be used instead of a polycrystalline Si layer to further improve the quality of the YBCO deposited on polycrystalline diamond.
- OSTI ID:
- 86176
- Report Number(s):
- CONF-940142--; ISBN 0-8194-1454-9
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
44 INSTRUMENTATION
INCLUDING NUCLEAR AND PARTICLE DETECTORS
BARIUM OXIDES
BOLOMETERS
CHEMICAL VAPOR DEPOSITION
COPPER OXIDES
EXPERIMENTAL DATA
FABRICATION
HIGH-TC SUPERCONDUCTORS
INFRARED RADIATION
MATERIALS
RADIATION DETECTION
SILICON
SUBSTRATES
SUPERCONDUCTING FILMS
TRANSITION TEMPERATURE
YTTRIUM OXIDES
ZIRCONIUM OXIDES
INCLUDING NUCLEAR AND PARTICLE DETECTORS
BARIUM OXIDES
BOLOMETERS
CHEMICAL VAPOR DEPOSITION
COPPER OXIDES
EXPERIMENTAL DATA
FABRICATION
HIGH-TC SUPERCONDUCTORS
INFRARED RADIATION
MATERIALS
RADIATION DETECTION
SILICON
SUBSTRATES
SUPERCONDUCTING FILMS
TRANSITION TEMPERATURE
YTTRIUM OXIDES
ZIRCONIUM OXIDES