ON THE NATURE OF THE ELECTRICAL CONDUCTIVITY OF BERYLLIUM, MAGNESIUM, CALCIUM, AND STRONTIUM OXIDES AT HIGH TEMPERATURES
BS>The nature of electrical conductivity in the pure oxides BeO, MgO, CaO, and SrO was investigated by the electromotive-force method. It was found thnt at 1000 to l300 deg C BeO was practically an ionic conductor, regardless of the oxygen partial pressure in the gaseous medium in which the measurements were made. The nature of the conductivity of MgO, CaO, and SrO depended on the oxygen partial pressure in the gas phase: in a cell with gaseous oxygen-- air electrodes, SrO displayed overwhelming electronic conductivity; with oxygen--(CO + CO/sub 2/ mixture) electrodes the average transport number of the ions was 0.9; values obtained in these cases for CaO were 0.5 to 0.6 and 0.6 to 0.9, respectively; and corresponding values for MgO were 0.8 to 0.9 and 0.9 to 0.95. The electrical conductivity of the oxides investigated was shown to be amphoteric. (auth)
- Research Organization:
- Electrochemistry Inst. Academy of Sciences, Sverdlovsk, USSR
- NSA Number:
- NSA-17-000172
- OSTI ID:
- 4797079
- Journal Information:
- Soviet Phys.-Solid State (English Transl.), Journal Name: Soviet Phys.-Solid State (English Transl.) Vol. Vol: 4
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
Similar Records
Oxide ion conductivity in doped NdAlO[sub 3] perovskite-type oxides
NiO-alkaline earth oxide catalysts for oxidative methane-to-syngas conversion: Influence of alkaline earth oxide on the surface properties and temperature-programmed reduction/reaction by H{sub 2} and methane