Electrical conductivity of pure and Fe-doped magnesium-aluminum spinel
Journal Article
·
· J. Am. Ceram. Soc.; (United States)
The electrical conductivity of nominally pure and Fe-doped MgAl/sub 2/O/sub 4/ spinel was measured at 700 to 2000/sup 0/K. The results for pure stoichiometric spinel can be fitted by exponential expressions with different activation-energy parameters in three ranges of temperature. The conductivity of a sample containing 0.1% iron is the same as that of pure samples when the iron is in the Fe/sup 2 +/ form; it increases approximately a factor of two when the ion is in the Fe/sup 3 +/ form. The results are consistent with ionic conduction due to motion of cation vacancies.
- Research Organization:
- Oak Ridge National Lab., TN
- DOE Contract Number:
- W-7405-ENG-26
- OSTI ID:
- 5648899
- Journal Information:
- J. Am. Ceram. Soc.; (United States), Journal Name: J. Am. Ceram. Soc.; (United States) Vol. 63:1-2; ISSN JACTA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
ALLOYS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CATIONS
CHALCOGENIDES
CHARGED PARTICLES
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
IONIC CONDUCTIVITY
IONS
IRON ADDITIONS
IRON ALLOYS
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
MANGANESE ADDITIONS
MANGANESE ALLOYS
MINERALS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
POINT DEFECTS
SILICON ADDITIONS
SILICON ALLOYS
SPINELS
TEMPERATURE DEPENDENCE
VACANCIES
VANADIUM ADDITIONS
VANADIUM ALLOYS
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
ALLOYS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CATIONS
CHALCOGENIDES
CHARGED PARTICLES
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
IONIC CONDUCTIVITY
IONS
IRON ADDITIONS
IRON ALLOYS
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
MANGANESE ADDITIONS
MANGANESE ALLOYS
MINERALS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
POINT DEFECTS
SILICON ADDITIONS
SILICON ALLOYS
SPINELS
TEMPERATURE DEPENDENCE
VACANCIES
VANADIUM ADDITIONS
VANADIUM ALLOYS