On the charge compensation mechanism in β-alumina
- 1 December 1980
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 73 (11) , 5786-5795
- https://doi.org/10.1063/1.440062
Abstract
Possible charge compensation models for the excess conducting Na+ ions in β‐alumina have been investigated with potential energy calculations. The cases studied include an artificial transfer of charge from Al3+ ions in the spinel block to Na+ ions in the conducting plane, the replacement of an Al3+ ion with three Na+ ions, the replacement of an Al3+ ion with a Mg2+ and a Na+ ion, and the interstitial oxygen model in which a VAl–Al–O–Al–VA1 defect compensates two extra Na+ ions. The results favor the last model.Keywords
This publication has 22 references indexed in Scilit:
- Local electroneutrality in the β-alumina structuresMaterials Research Bulletin, 1979
- X-ray diffuse scattering from alkali, silver, and europium-aluminaPhysical Review B, 1978
- Structural investigation of K+ and Tl+ β-aluminasJournal of Solid State Chemistry, 1977
- The crystal structure of Rb-β-aluminaJournal of Solid State Chemistry, 1976
- Structural determinations of single-crystal K β-alumina and cobalt-doped K β-aluminaJournal of Solid State Chemistry, 1976
- The crystal structure of Tl-β-aluminaJournal of Solid State Chemistry, 1976
- On the ionic conduction in β-alumina: Potential energy curves and conduction mechanismThe Journal of Chemical Physics, 1975
- Stoichiometry and structure of the super ionic conductor silver beta-aluminaJournal of Solid State Chemistry, 1972
- Refinement of the structure of sodium β-aluminaActa Crystallographica Section B: Structural Science, Crystal Engineering and Materials, 1971
- Transport Properties of Silver Beta AluminaJournal of the Electrochemical Society, 1971