Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1298752 | Solid State Ionics | 2008 | 5 Pages |
Abstract
The structure of Bi3TaO7 has been examined by X-ray and neutron powder diffraction. The structure is that of an ordered defect fluorite and has been refined using a cubic δ-Bi2O3 type subcell model. A defect structure model is proposed with Ta5+ in predominantly a distorted octahedral geometry. These tantalate octahedra are thought to form corner sharing chains in a similar way to that proposed in the isostructural phase Bi3NbO7. The thermal variation of conductivity and lattice parameter appear to be correlated with subtle changes in the oxide ion distribution.
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Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
I. Abrahams, F. Krok, M. Struzik, J.R. Dygas,