Вид документа : Статья из журнала Шифр издания : 54/G 15 Автор(ы) : Galakhov V. R., Neumann M., Kellerman D. G. Заглавие : Electronic structure of defective lithium cobaltites LixCoO2 Место публикации : Applied Physics A. - 2009. - Vol. 94. - С. P.497-500: il. Примечания : Bibliogr. : p. 500 (18 ref.) ISSN: 0947-8396 ББК : 54 Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ Ключевые слова (''Своб.индексиров.''): кобальтит лития--структура электронная--рентгеновские эмиссионные спектры Аннотация: X-ray absorption, resonant X-ray emission, and??X-ray photoelectron spectroscopical methods have been applied for the study of the electronic structure of defective lithium cobaltites LixCoO2 (0.6 . x . 1.0). Resonant O K alfa X-ray emission spectra of LiCoO2 showed localized excitonic??states due to a dd transition between occupied and??unoccupied Co 3d states. On the base of measurements of Co 3s X-ray photoelectron, Co 2p, and O 1s X-ray absorption spectra, it was established that in defective cobaltites??the electronic holes are localized mainly in O 2p states. An evidence of phase separation in LixCoO2 has been found. It was shown that the semiconductor-to-metal transition in LixCoO2 (x 0.76) at about 160 K is not accompanied by??changes in the Co 3d electronic configuration which remains 3d6 Держатели документа: Центральная научная библиотека УрО РАН Доп.точки доступа: Neumann, M.; Kellerman, D. G.