Cubic ReO/sub 3/-type W/sub 1-x/Ta/sub x/O/sub 3-x/2/ and W/sub 1-x/Nb/sub x/O/sub 3-x/2/
Journal Article
·
· J. Solid State Chem.; (United States)
New types of compounds in the systems W/sub 1-x/Ta/sub x/O/sub 3-x/2/ and W/sub 1-x/Nb/sub x/O/sub 3-x/2/ were obtained from thermal decomposition of Ta- (or Nb-) doped peroxo-polytungstic acids at 750-900/degrees/C in air. The compounds were cubic with the ReO/sub 3/-type structure when x greater than or equal to 0.2 for the Ta system and x greater than or equal to 0.26 for the Nb system. However they were tetragonal at x approx. 0.1. Observed densities and X-ray intensities indicated that these compounds had oxygen vacancies.
- Research Organization:
- Central Research Laboratory, Tokyo (Japan)
- OSTI ID:
- 5999894
- Journal Information:
- J. Solid State Chem.; (United States), Journal Name: J. Solid State Chem.; (United States) Vol. 77:2; ISSN JSSCB
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
CHALCOGENIDES
CHEMICAL REACTIONS
COHERENT SCATTERING
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CUBIC LATTICES
DECOMPOSITION
DIFFERENTIAL THERMAL ANALYSIS
DIFFRACTION
HEATING
LATTICE PARAMETERS
MONOCLINIC LATTICES
NIOBIUM COMPOUNDS
NIOBIUM OXIDES
OXIDES
OXYGEN COMPOUNDS
POWDERS
REFRACTORY METAL COMPOUNDS
SCATTERING
TANTALUM COMPOUNDS
TANTALUM OXIDES
TETRAGONAL LATTICES
THERMAL ANALYSIS
TRANSITION ELEMENT COMPOUNDS
TUNGSTEN COMPOUNDS
TUNGSTEN OXIDES
X-RAY DIFFRACTION
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
CHALCOGENIDES
CHEMICAL REACTIONS
COHERENT SCATTERING
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CUBIC LATTICES
DECOMPOSITION
DIFFERENTIAL THERMAL ANALYSIS
DIFFRACTION
HEATING
LATTICE PARAMETERS
MONOCLINIC LATTICES
NIOBIUM COMPOUNDS
NIOBIUM OXIDES
OXIDES
OXYGEN COMPOUNDS
POWDERS
REFRACTORY METAL COMPOUNDS
SCATTERING
TANTALUM COMPOUNDS
TANTALUM OXIDES
TETRAGONAL LATTICES
THERMAL ANALYSIS
TRANSITION ELEMENT COMPOUNDS
TUNGSTEN COMPOUNDS
TUNGSTEN OXIDES
X-RAY DIFFRACTION