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- Title
Monoclinic superstructure V<sub>14</sub>O<sub>6</sub> of the tetragonal solid solution of oxygen in vanadium.
- Authors
Gusev, A. I.; Davydov, D. A.
- Abstract
The monoclinic (space group C2/ m) superstructure of V14O6, which is formed in the atom-vacancy ordering of the tetragonal solid solution of oxygen in vanadium, is studied by the methods of x-ray diffraction and symmetry analysis. It has been found that the channel of the order-disorder phase transition attributed to the formation of the monoclinic suboxide V14O6 includes six superstructure vectors belonging to three non-Lifshitz stars { k 1−1}, { k 1−2}, and { k 1–3} of one type { k 1}. The distribution function of the O atoms in the V14O6 monoclinic superstructure has been calculated. It has been shown that the displacements of V atoms distort the body-centered tetragonal metal sublattice, thus preparing the formation of the fcc sublattice and the transition from the suboxide V14O6 to the cubic vanadium monoxide with the B1 structure.
- Subjects
VANADIUM; ECONOMIC determinism; SOLID solutions; OXYGEN; X-ray diffraction
- Publication
JETP Letters, 2008, Vol 86, Issue 10, p657
- ISSN
0021-3640
- Publication type
Article
- DOI
10.1134/S0021364007220092