Mixed-valence vanadium oxides studied by XPS

被引：388

作者：

Demeter, M ^{[1
]}

Neumann, M

Reichelt, W

机构：

[1] Univ Osnabruck, Fac Phys, D-49069 Osnabruck, Germany

[2] Univ Dresden, Dept Inorgan Chem, D-01062 Dresden, Germany

来源：

SURFACE SCIENCE | 2000年 / 454卷 / 01期

关键词：

vanadium oxide; x-ray photoelectron spectroscopy;

D O I：

10.1016/S0039-6028(00)00111-4

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We have investigated several mixed-valence vanadium oxides, single-crystals by X-ray photoelectron spectroscopy (XPS). Many studies have been performed on V2O5, VO2 and V2O3. Less investigated are the mixed-valence compounds, as the V3O5, V4O7 and V6O13 systems, which are discussed here. They exhibit as a function of temperature metal-insulator transitions (MIT), A detailed analysis for these systems, above and below the MIT temperature is given. The core-level spectra for the mixed-valence compounds are compared with those of the related systems, V2O5, VO2 and V2O3 having V5+, V4+ and V3+ ions, respectively. The electronic structures for all investigated oxides are characterized by strong V 3d-O 2p hybridization and they are discussed in relation with similar studies. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：41 / 44

页数：4

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