Вид документа : Статья из журнала Шифр издания : 54/G 96 Автор(ы) : Gusev A. I. Заглавие : Ordered Orthorhombic Phases of Titanium Monoxide Место публикации : JETP Letters. - 2001. - Vol. 74 , № 2. - С. P. 91-95: il. Примечания : Bibliogr. : p. 94-95 (17 ref.) ISSN: 0021-3640 ББК : 54 Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ Ключевые слова (''Своб.индексиров.''): монооксид титана--фазовые диаграммы Аннотация: Symmetry analysis is carried out for the ordered phases of cubic monoxide TiOy with relative oxygen contents y 1 and y 1. It is established that a partially ordered orthorhombic phase (space group Immm)—a derivative of the orthorhombic M3X2 (Vac) superstructure (at y 1.0) or the inverse superstructure M2( )X3 (at y 1)—may arise in TiOy . The distribution of Ti and O atoms, oxygen vacancies, and titanium vacancies in unit cells of the orthorhombic ordered phases is determined. The phases are formed through the order–disorder transition channel along two rays of a non-Lifshitz star {k4}, and the ordering proceeds as a first-order phase transition. The distribution functions of Ti atoms over the sites of metallic and O atoms over the sites of nonmetallic sublattices are calculated for the orthorhombic superstructures of cubic titanium monoxide TiOy Доп.точки доступа: Гусев Александр Иванович