G 96 Gusev, A. I. V52O64 Tetragonal Superstructure of Cubic Vanadium Monoxide with Vacancies in the Metal Sublattice / A. I. Gusev, D. A. Davydov // JETP Letters. - 2008. - Vol. 88, № 2. - P111-117 : il. - Bibliogr. : p. 117 (21 ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): МОНООКСИД ВАНАДИЯ -- ТЕТРАГОНАЛЬНАЯ СВЕРХСТРУКТУРА -- НЕСТЕХИОМЕТРИЯ Аннотация: The atom–vacancy ordering of cubic vanadium monoxide VO1.29, 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 VOy proceeds as a first-order phase transition through the disorder–order channel including 22 nonequivalent superstructure vectors of four stars {k10}, {k4}, {k3}, and {k2}. The distribution function of the vanadium atoms in the V52O64 tetragonal superstructure has been calculated Полный текст |