Y-Ba-Cu(Cr) oxide superconductor
Journal Article
·
· Chin. Phys.; (United States)
OSTI ID:6228600
We have obtained a superconductor with zero-resistance temperature T/sub cf/ = 94.1 K, midpoint transition temperature T/sub c/ = 95 K, onset temperature T/sub ci/ = 100 K and transition width T/sub c/ = 1 K in Y-Ba-Cu-O system. The result of x-ray diffraction structural analysis at low temperature shows that there exists a phase transition in the multiphase superconductor at low temperatures (123--173 K). Therefore, we consider that the high T/sub ci/ of the multiphase superconductor in the Y-Ba-Cu-O system results from the low-temperature phase transition and is not completely at the superconducting transition point. Through the substitution of Cr for one third of Cu in the oxide system we have also obtained a superconductor with T/sub cf/ = 82.8 K, T/sub c/ = 83.5 K, T/sub ci/ = 92 K, and ..delta..T/sub c/ = 1 K.
- Research Organization:
- Northeast University of Technology, Shenyang
- OSTI ID:
- 6228600
- Journal Information:
- Chin. Phys.; (United States), Journal Name: Chin. Phys.; (United States) Vol. 9:1; ISSN CHPHD
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COHERENT SCATTERING
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL STRUCTURE
DIFFRACTION
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SCATTERING
SUPERCONDUCTIVITY
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
X-RAY DIFFRACTION
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COHERENT SCATTERING
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL STRUCTURE
DIFFRACTION
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SCATTERING
SUPERCONDUCTIVITY
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
X-RAY DIFFRACTION
YTTRIUM COMPOUNDS
YTTRIUM OXIDES