High temperature superconductivity in air quenched YBa sub 2 Cu sub 3 O sub 7 minus. delta. doped with Sb sub 2 O sub 3
Journal Article
·
· Applied Physics Letters; (United States)
- Regional Research Laboratory (CSIR), Trivandrum 695 019 (India)
The superconducting properties of YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} compounds doped with Sb{sub 2}O{sub 3} have been studied by x-ray diffraction and electrical and magnetic measurements. It is found that the widely accepted procedure of slow cooling or annealing at 600 {degree}C for several hours for oxygenation is not essential to obtain superconductivity in these doped samples. Superconducting transition (92 K) was obtained by directly quenching the doped specimen from the sintering temperature of 950 {degree}C. Tetragonal to orthorhombic transformation has taken place within this short period, indicating that the rate of oxygen absorption has been increased tremendously by Sb{sub 2}O{sub 3} addition in the YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} compound. Undoped samples quenched in air were always tetragonal and nonsuperconducting.
- OSTI ID:
- 5411647
- Journal Information:
- Applied Physics Letters; (United States), Journal Name: Applied Physics Letters; (United States) Vol. 59:10; ISSN APPLA; ISSN 0003-6951
- 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
ANNEALING
ANTIMONY COMPOUNDS
ANTIMONY OXIDES
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COHERENT SCATTERING
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL DOPING
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CRYSTAL-PHASE TRANSFORMATIONS
DIFFRACTION
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
HEAT TREATMENTS
HIGH-TC SUPERCONDUCTORS
IMPURITIES
MAGNETIC PROPERTIES
ORTHORHOMBIC LATTICES
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
SCATTERING
STOICHIOMETRY
SUPERCONDUCTIVITY
SUPERCONDUCTORS
TETRAGONAL LATTICES
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
VERY HIGH TEMPERATURE
X-RAY DIFFRACTION
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
ANNEALING
ANTIMONY COMPOUNDS
ANTIMONY OXIDES
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COHERENT SCATTERING
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL DOPING
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CRYSTAL-PHASE TRANSFORMATIONS
DIFFRACTION
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
HEAT TREATMENTS
HIGH-TC SUPERCONDUCTORS
IMPURITIES
MAGNETIC PROPERTIES
ORTHORHOMBIC LATTICES
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
SCATTERING
STOICHIOMETRY
SUPERCONDUCTIVITY
SUPERCONDUCTORS
TETRAGONAL LATTICES
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
VERY HIGH TEMPERATURE
X-RAY DIFFRACTION
YTTRIUM COMPOUNDS
YTTRIUM OXIDES