Electrical conductivity in solid solutions of La sub 5 minus x M sub x Mo sub 3 O sub 16. 5+x/2 (M = Ce sup 4+ and Th sup 4+; 0. 0 <= x < 0. 3) with a fluorite-related structure
Journal Article
·
· Chemistry of Materials; (USA)
OSTI ID:7122478
- Rutgers, The State Univ. of New Jersey, Piscataway (USA)
Solid solutions of La{sub 5{minus}x}M{sub x}Mo{sub 3}O{sub 16.5+x/2}, where M = Ce{sup 4+} and Th{sup 4+} with 0.0 {<=} x < 0.3, with a fluorite-related structure have been prepared by solid-state reaction. The unit-cell parameters decrease with increasing Ce{sup 4+} content. Ionic conductivity was investigated from 200 to 700{degree}C by ac complex impedance measurement. Differential thermal analysis, thermogravimetry, and magnetic susceptibility measurements and x-ray absorption near-edge spectral analysis were also carried out. An interstitialcy mechanism is proposed to interpret the oxide ion conduction behavior in this type of oxygen-excess system.
- OSTI ID:
- 7122478
- Journal Information:
- Chemistry of Materials; (USA), Journal Name: Chemistry of Materials; (USA) Vol. 2:2; ISSN CMATE; ISSN 0897-4756
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
CERIUM IONS
CHALCOGENIDES
CHARGED PARTICLES
DATA
DATA ANALYSIS
DISPERSIONS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELEMENTS
EXPERIMENTAL DATA
INFORMATION
IONS
LANTHANUM
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
MEASURING INSTRUMENTS
MEASURING METHODS
METALS
MIXTURES
MOLYBDENUM COMPOUNDS
MOLYBDENUM OXIDES
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RARE EARTHS
REFRACTORY METAL COMPOUNDS
SOLID SOLUTIONS
SOLUTIONS
THORIUM IONS
TRANSITION ELEMENT COMPOUNDS
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
CERIUM IONS
CHALCOGENIDES
CHARGED PARTICLES
DATA
DATA ANALYSIS
DISPERSIONS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELEMENTS
EXPERIMENTAL DATA
INFORMATION
IONS
LANTHANUM
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
MEASURING INSTRUMENTS
MEASURING METHODS
METALS
MIXTURES
MOLYBDENUM COMPOUNDS
MOLYBDENUM OXIDES
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RARE EARTHS
REFRACTORY METAL COMPOUNDS
SOLID SOLUTIONS
SOLUTIONS
THORIUM IONS
TRANSITION ELEMENT COMPOUNDS