Вид документа : Статья из журнала Шифр издания : 54/V 11 Автор(ы) : Valeeva A. A., Rempel A. A., Sprengel W., Schaefer H.-E. Заглавие : Vacancies on the Ti sublattice in titanium monoxide TiOy studied using positron annihilation techniques Место публикации : Physical Review B: Condensed Matter and Materials Physics. - 2007. - Vol. 75, № 9. - С. 094107/1-094107/6 Примечания : Библиогр. : с. 094107/6 (39 назв.) ББК : 54 Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ Ключевые слова (''Своб.индексиров.''): монооксид титана--аннигиляция электронно-позитронная Аннотация: The local atomic environment of lattice vacancies in titanium monoxide has been specifically studied by positron annihilation techniques in the composition range from TiO0.74 to TiO1.26. For nonstoichiometric titanium monoxide, a high concentration of vacancies has been suggested on both the titanium and the oxygen sublattice. From the analysis of the core electron momentum distribution of the atoms surrounding the vacancies in disordered as well as in ordered titanium monoxide, oxygen atoms are identified to form the local vacancy environment, indicating that positrons are trapped by titanium and not by oxygen vacancies. Positron lifetime measurements have shown that the decrease of the oxygen content, y, and the process of disordering in nonstoichiometric titanium monoxide TiOy, are accompanied by an increase of the valence electron density on the titanium vacancy Держатели документа: Центральная научная библиотека УрО РАН Доп.точки доступа: Valeeva, A. A.; Rempel, A. A.; Ремпель Андрей Андреевич; Sprengel, W.; Schaefer, H.-E.