C 74 Concentration Phase Transition near the StoichiometricComposition of Vanadium Monoxide VO1.00 / D. A. Davydov, S. Z. Nazarova, A. A. Valeeva, A. A. Rempel // Bulletin of the Russian Academy of Sciences: Physics. - 2008. - Vol. 72, № 8. - P.1090-1093 : il. - Bibliogr. : p. 1093 (16 ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): ФАЗОВЫЙ ПЕРЕХОД -- СТЕХИОМЕТРИЯ -- МОНООКСИД ВАНАДИЯ Аннотация: The concentration dependences of the magnetic susceptibility and lattice parameter of cubic vanadium monoxide have been measured in the composition range from VO0.81 to VO1.07. Near the stoichiometric composition VO1.00, the concentration dependences exhibit a stepwise increase in the specific magnetic susceptibility??(by approximately 0.7 X 10(-6) cm(3)/g) and lattice constant (by about 0.002 nm). These effects can be??related to the concentration phase transition, which occurs in vanadium monoxide with a change from a substoichiometric composition to superstoichiometric. At such a transition, along with a decrease in the concentration of oxygen vacancies, tetrahedrally coordinated vanadium interstitials are formed, as a result of which the??B1 structure changes to a more complex cubic phase structure with the same space group??Fm-3m \\\\Expert2\\nbo\\Bulletin of the Russian Academy of Sciences Physics\\2008, V. 72, N 8, P. 1090-1093.pdf |