Mixed-valence vanadium oxides studied by XPS

Autor(en): Demeter, M
Neumann, M
Reichelt, W
Stichwörter: Chemistry; Chemistry, Physical; ELECTRONIC-STRUCTURE; PHOTOEMISSION; Physics; Physics, Condensed Matter; SPECTROSCOPY; TRANSITIONS; V2O3; V6O13; vanadium oxide; VO2; X-RAY PHOTOELECTRON; x-ray photoelectron spectroscopy
Erscheinungsdatum: 2000
Herausgeber: ELSEVIER SCIENCE BV
Journal: SURFACE SCIENCE
Volumen: 454
Startseite: 41
Seitenende: 44
Zusammenfassung: 
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.
Beschreibung: 
18th European Conference on Surface Science (ECOSS 18), VIENNA UNIV TECHNOL, VIENNA, AUSTRIA, SEP 21-24, 1999
ISSN: 00396028
DOI: 10.1016/S0039-6028(00)00111-4

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