High temperature jump of resistance in the Y-Ba-Cu-O system
Journal Article
·
· Chin. Phys.; (United States)
OSTI ID:5928917
Recently, in the investigations of superconductivity of the Y-Ba-Cu-O system, we mentioned that a transition exists at high temperature. The composition of the sample we used is Y/sub 0.4/Ba/sub 0.6/CuO/sub 3/minus//ital y//. It was sintered at 1273 K for 3 hrs and annealed at 973 K for 3 hrs. There are two jumps of resistance at 81 K and 245 K, respectively. The higher temperature jump from 220 K to 245 K we can explain in two ways. It is probably a superconducting transition with no zero resistance only because of the very small superconducting component. The other reason may be that there is a structural transformation caused by an unstable phase.
- Research Organization:
- Institute of Physics, Chinese Academy of Sciences, Beijing(CN)
- OSTI ID:
- 5928917
- Journal Information:
- Chin. Phys.; (United States), Journal Name: Chin. Phys.; (United States) Vol. 9:2; ISSN CHPHD
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
ANNEALING
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
FABRICATION
HEAT TREATMENTS
LOW TEMPERATURE
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
SINTERING
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
ANNEALING
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
FABRICATION
HEAT TREATMENTS
LOW TEMPERATURE
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
SINTERING
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES