X-ray absorption study of the electronic structure of tungsten and molybdenum oxides on the OK-edge

Citation
J. Purans et al., X-ray absorption study of the electronic structure of tungsten and molybdenum oxides on the OK-edge, ELECTR ACT, 46(13-14), 2001, pp. 1973-1976
Citations number
16
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
ELECTROCHIMICA ACTA
ISSN journal
0013-4686 → ACNP
Volume
46
Issue
13-14
Year of publication
2001
Pages
1973 - 1976
Database
ISI
SICI code
0013-4686(20010402)46:13-14<1973:XASOTE>2.0.ZU;2-L
Abstract
Magnetron sputtered amorphous thin films a-WO3, a-MoO3 and doped a-WO3:Ir h ave been studied by X-ray absorption spectroscopy on the oxygen K-edge in c omparison with crystalline oxides as monoclinic m-WO3, orthorhombic alpha - MoO3, cubic Na0.6WO3, layered-type hexagonal h-WO3 and WO3.H2O, having Vari able electronic and atomic structure. The changes in the XANES ranging 10-1 5 eV above the absorption edge are interpreted based on the known band-stru cture calculations. The high-energy features are related to the multiple-sc attering processes (EXAFS) at the nearest atoms. (C) 2001 Elsevier Science Ltd. All rights reserved.