Superconductivity in the (YBa[sub 2]Cu[sub 3])[sub 1[minus]x]Na[sub x]O[sub 7[minus][delta]] system
Journal Article
·
· Journal of the American Ceramic Society; (United States)
- Univ. of Dayton, OH (United States)
The (YBa[sub 2]Cu[sub 3])[sub 1[minus]x]Na[sub x]O[sub 7[minus][delta]] system in the range of x = 0--0.8 was investigated. Experimental data suggest that the sodium doping with x [<=] 0.26 does not affect the critical transition temperature [Tc], and the crystal structure maintains the orthorhombic lattice with a slightly smaller unit cell. However, sodium doping increases the sintering and grain growth kinetics, resulting in a higher superconducting phase volume and an enhanced Meissner effect. It also lowers the processing temperature. The experimental data also suggest that the sodium atoms diffuse into the superconducting YBa[sub 2]Cu[sub 3]O[sub 7[minus][delta]] crystallites, which stabilizes the orthorhombic phase. The transition temperature (orthorhombic to tetragonal) in sodium-doped materials increases with the increasing concentration of sodium.
- OSTI ID:
- 7114760
- Journal Information:
- Journal of the American Ceramic Society; (United States), Journal Name: Journal of the American Ceramic Society; (United States) Vol. 77:4; ISSN 0002-7820; ISSN JACTAW
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360207* -- Ceramics
Cermets
& Refractories-- Superconducting Properties-- (1992-)
ALKALI METAL COMPOUNDS
ALKALI METALS
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL STRUCTURE
DATA
DOPED MATERIALS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELEMENTS
EXPERIMENTAL DATA
HIGH-TC SUPERCONDUCTORS
INFORMATION
MATERIALS
METALLURGICAL EFFECTS
METALS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SODIUM
SODIUM COMPOUNDS
SODIUM OXIDES
SUPERCONDUCTIVITY
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360207* -- Ceramics
Cermets
& Refractories-- Superconducting Properties-- (1992-)
ALKALI METAL COMPOUNDS
ALKALI METALS
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL STRUCTURE
DATA
DOPED MATERIALS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELEMENTS
EXPERIMENTAL DATA
HIGH-TC SUPERCONDUCTORS
INFORMATION
MATERIALS
METALLURGICAL EFFECTS
METALS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SODIUM
SODIUM COMPOUNDS
SODIUM OXIDES
SUPERCONDUCTIVITY
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES