Correlation of magnetic properties to oxygen and potassium stoichiometry in single-crystal Ba[sub 1[minus]x]K[sub x]BiO[sub 3[minus]y]
Conference
·
· Journal of Superconductivity; (United States)
OSTI ID:6661938
- Univ. of California, Davis, CA (United States) Lawrence Livermore National Lab., CA (United States)
- Lawrence Livermore National Lab., CA (United States)
Recent theoretical calculations have suggested the coupling of electrons to high-energy oxygen phonons as an explanation of superconductivity in the Ba[sub 1[minus]x]K[sub x]BiO[sub 3[minus]y] system. We have synthesized high-quality single crystals of the material and have examined the behaviors of critical field and critical current parameters as a function of changes in the oxygen content and in the Ba/K ratio. We have determined, via positron lifetime spectroscopy and single-crystal X-ray measurements, that the oxygen stoichiometry in this system can be varied without significant impact on the metal atom sublattice. These results facilitate an investigation of the dependence of critical parameters on dopant and defect levels in this system. 7 refs., 3 figs.
- OSTI ID:
- 6661938
- Report Number(s):
- CONF-930710--; CNN: DMR-90-21029
- Conference Information:
- Journal Name: Journal of Superconductivity; (United States) Journal Volume: 7:2
- Country of Publication:
- United States
- Language:
- English
Similar Records
Correlation of the superconducting transition to oxygen stoichiometry in single-crystal Ba[sub 1[minus][ital x]]K[sub [ital x]]BiO[sub 3[minus][ital y]]
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Journal Article
·
Thu Jul 01 00:00:00 EDT 1993
· Physical Review, B: Condensed Matter; (United States)
·
OSTI ID:6489070
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Journal Article
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·
OSTI ID:5947211
Direct observation of the Fermi surface in Ba[sub 1[minus][ital x]]K[sub [ital x]]BiO[sub 3]
Journal Article
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Mon Aug 29 00:00:00 EDT 1994
· Physical Review Letters; (United States)
·
OSTI ID:6982162
Related Subjects
36 MATERIALS SCIENCE
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
360207* -- Ceramics
Cermets
& Refractories-- Superconducting Properties-- (1992-)
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102 -- Chemical & Spectral Procedures
ALKALI METAL COMPOUNDS
ALKALI METALS
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
BISMUTH COMPOUNDS
BISMUTH OXIDES
CHALCOGENIDES
COHERENT SCATTERING
CRITICAL CURRENT
CRITICAL FIELD
CRYSTALS
CURRENTS
DIFFRACTION
ELECTRIC CURRENTS
ELECTRONS
ELEMENTARY PARTICLES
ELEMENTS
FERMIONS
HIGH-TC SUPERCONDUCTORS
LEPTONS
MAGNETIC FIELDS
MAGNETIC PROPERTIES
METALS
MONOCRYSTALS
NONMETALS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PHONONS
PHYSICAL PROPERTIES
POTASSIUM
POTASSIUM COMPOUNDS
POTASSIUM OXIDES
QUASI PARTICLES
SCATTERING
SPECTROSCOPY
STOICHIOMETRY
SUPERCONDUCTORS
X-RAY DIFFRACTION
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
360207* -- Ceramics
Cermets
& Refractories-- Superconducting Properties-- (1992-)
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102 -- Chemical & Spectral Procedures
ALKALI METAL COMPOUNDS
ALKALI METALS
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
BISMUTH COMPOUNDS
BISMUTH OXIDES
CHALCOGENIDES
COHERENT SCATTERING
CRITICAL CURRENT
CRITICAL FIELD
CRYSTALS
CURRENTS
DIFFRACTION
ELECTRIC CURRENTS
ELECTRONS
ELEMENTARY PARTICLES
ELEMENTS
FERMIONS
HIGH-TC SUPERCONDUCTORS
LEPTONS
MAGNETIC FIELDS
MAGNETIC PROPERTIES
METALS
MONOCRYSTALS
NONMETALS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PHONONS
PHYSICAL PROPERTIES
POTASSIUM
POTASSIUM COMPOUNDS
POTASSIUM OXIDES
QUASI PARTICLES
SCATTERING
SPECTROSCOPY
STOICHIOMETRY
SUPERCONDUCTORS
X-RAY DIFFRACTION