Doping directed at the oxygen sites in Y/sub 1/Ba/sub 2/Cu/sub 3/O/sub 7-/gamma//: The effect of sulfur, fluorine, and chlorine
Journal Article
·
· J. Superconduct.; (United States)
The authors have investigated the effect of three dopants directed at the oxygen sites in Y/sub 1/Ba/sub 2/Cu/sub 3/O/sub 7-/gamma//: sulfur, fluorine, and chlorine. Single-phase material has been obtained up to a (nominal) replacement of /approx/ 1% of the oxygen. Although the lattice parameters are unchanged, all dopants raise T/sub c/ (very slightly), sharpen the resistive transition, reduce the normal state resistivity, and very substantially increase the (magnetically determined) fraction of the material that is superconducting. All of these results differ qualitatively from those obtained with dopants directed at other locations in the 123 structure, and it is suggested that small additions of sulfur, fluorine, or chlorine may help to stabilize the ideal 123 stoichiometry.
- Research Organization:
- Case Western Reserve Univ., Cleveland, OH (USA)
- OSTI ID:
- 5676901
- Journal Information:
- J. Superconduct.; (United States), Journal Name: J. Superconduct.; (United States) Vol. 1:4; ISSN JOUSE
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
CHLORINE
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL DOPING
DOPED MATERIALS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELEMENTS
FLUORINE
HALOGENS
MAGNETIZATION
MATERIALS
MATERIALS TESTING
METALLURGICAL EFFECTS
NONMETALS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
STOICHIOMETRY
SULFUR
SUPERCONDUCTIVITY
SUPERCONDUCTORS
TESTING
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
CHLORINE
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL DOPING
DOPED MATERIALS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELEMENTS
FLUORINE
HALOGENS
MAGNETIZATION
MATERIALS
MATERIALS TESTING
METALLURGICAL EFFECTS
NONMETALS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
STOICHIOMETRY
SULFUR
SUPERCONDUCTIVITY
SUPERCONDUCTORS
TESTING
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
YTTRIUM COMPOUNDS
YTTRIUM OXIDES