Superconductivity devices: Commercial use of space. Semiannual report, 3 July 1992-31 March 1993
Technical Report
·
OSTI ID:6271117
A YBCO thick film containing 20 percent Ag2O with a T[sub c] of 86.8 K and J[sub c] of 108 A/sq cm was obtained. The film was fabricated by a two-step firing process, i.e., firing the film at 1000 C for 10 minutes and annealing at 970 C for 30 minutes. The two-step firing process, however, was not suitable for the multiple-lead YBCO sample due to the formation of the 211 green phase at 1000 C in the multiple-lead YBCO sample. A BSCCO thick film printed on a MgO coated MSZ substrate and fired at 845 C for 2 hours exhibited a superconducting behavior at 89 K. Because of its porous microstructure, the critical current density of the BSCCO thick film was limited. This report also includes the results of the YBCO and BSCCO materials used as oxide electrodes for ferroelectric materials. The YBCO electroded PLZT showed higher remanent polarization and coercive field than the sample electroded with silver paste. A higher Curie temperature for the PLZT was obtained from the YBCO electroded sample. The BSCCO electroded sample, however, exhibited the same Curie temperature as that of a silver electroded sample. Dissipation factors of the ferroelectric samples increased when the oxide electrode was applied.
- Research Organization:
- Clemson Univ., SC (United States)
- OSTI ID:
- 6271117
- Report Number(s):
- N-93-24483; NASA-CR--192841; NAS--1.26:192841; CNN: NAG1-1301
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360207* -- Ceramics
Cermets
& Refractories-- Superconducting Properties-- (1992-)
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COATINGS
COPPER COMPOUNDS
COPPER OXIDES
CRITICAL CURRENT
CURRENT DENSITY
CURRENTS
ELECTRIC CURRENTS
FABRICATION
FERROELECTRIC MATERIALS
FILMS
HIGH-TC SUPERCONDUCTORS
LANTHANUM COMPOUNDS
LEAD COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PLZT
PROTECTIVE COATINGS
RARE EARTH COMPOUNDS
SILVER COMPOUNDS
SILVER OXIDES
SPACE
SUBSTRATES
SUPERCONDUCTORS
TEMPERATURE RANGE
TEMPERATURE RANGE 1000-4000 K
THERMODYNAMIC PROPERTIES
TITANATES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
ZIRCONATES
ZIRCONIUM COMPOUNDS
360207* -- Ceramics
Cermets
& Refractories-- Superconducting Properties-- (1992-)
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COATINGS
COPPER COMPOUNDS
COPPER OXIDES
CRITICAL CURRENT
CURRENT DENSITY
CURRENTS
ELECTRIC CURRENTS
FABRICATION
FERROELECTRIC MATERIALS
FILMS
HIGH-TC SUPERCONDUCTORS
LANTHANUM COMPOUNDS
LEAD COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PLZT
PROTECTIVE COATINGS
RARE EARTH COMPOUNDS
SILVER COMPOUNDS
SILVER OXIDES
SPACE
SUBSTRATES
SUPERCONDUCTORS
TEMPERATURE RANGE
TEMPERATURE RANGE 1000-4000 K
THERMODYNAMIC PROPERTIES
TITANATES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
ZIRCONATES
ZIRCONIUM COMPOUNDS