R 29 Razinkin, A. S. Low-dimensional NbO structures on the Nb(110) surface:scanning tunneling microscopy, electron spectroscopy anddiffraction / A. S. Razinkin, E. V. Shalaeva, M. V. Kuznetsov // arXiv condenced matter. - 2008. - P.1-7 : il. - Bibliogr. : p. 3 (5 ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): ОКСИД НИОБИЯ -- СПЕКТРОСКОПИЯ ЭЛЕКТРОННАЯ Аннотация: X-ray photoelectron spectroscopy and diffraction (XPS, XPD) and scanning tunneling microscopy (STM) have been used for study of NbOx-structures on the Nb(110) surface. It is shown that niobium atoms are ordered to form a two-dimensional superstructure with equidistant spacing between the chains of niobium atoms. Chemical shifts of Nb3d- and O1s-levels demonstrate that the oxide layer corresponds to niobium monoxide NbO and the most part of oxygen in chemisorbed state is localized on the surface. A model of quasi-ordered structure of NbO on the Nb(110) surface is proposed |