This article is cited in 4 papers

CONDENSED MATTER

V₅₂O₆₄ tetragonal superstructure of cubic vanadium monoxide with vacancies in the metal sublattice

A. I. Gusev, D. A. Davydov

Institute of Solid State Chemistry, Ural Division, Russian Academy of Sciences, ul. Pervomaiskaya 91, Yekaterinburg, 620041, Russia

Abstract: The atom-vacancy ordering of cubic vanadium monoxide VO_1.29, which has basis cubic structure B1 and structural vacancies in the metal sublattice, has been studied using the x-ray diffraction method. It has been shown that the formation of the tetragonal (space group I4₁/amd) ordered phase V₅₂O₆₄ of cubic vanadium monoxide VO_y proceeds as a first-order phase transition through the disorder-order channel including 22 nonequivalent superstructure vectors of four stars {k ₁₀}, {k ₄}, {k ₃}, and {k ₂}. The distribution function of the vanadium atoms in the V₅₂O₆₄ tetragonal superstructure has been calculated.

PACS: 61.50.Ks, 61.66.Fn, 61.72.Dd, 64.70.-k, 81.30.-t

Received: 19.05.2008
Revised: 09.06.2008

 English version: Journal of Experimental and Theoretical Physics Letters, 2008, 88:2, 111–117

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