Study of the electronic structure of Rhenium and Tungsten oxides on the O K-edge

J. Purans; A. Kuzmin; Ph Parent; C. Laffone

doi:10.1007/BF02375786

Study of the electronic structure of Rhenium and Tungsten oxides on the O K-edge

J. Purans^*
, A. Kuzmin
, Ph Parent
, C. Laffone

^*Corresponding author for this work

Université Paris-Saclay

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

Abstract

Oxygen K-edge x-ray absorption spectra were studied on the electrochromic amorphous thin film a-WO₃ in the comparison with crystalline oxides having variable electronic (d⁽⁾, d¹, d²) and atomic structure: monoclinic m-WO₃ (insulator - d"), cubic Nao₆WO₃ (metal - d¹), cubic ReO, (metal - d¹), layered-type hexagonal h-WO₃ WO₃ H ₂O and with intercalated H_xReO₃ (metal - d ²), H_xWO₃ oxides having a metal-isulating transition. The changes in the XANES range 10-15 eV above the absorption edge are interpreted based on the known band-structure calculations. The high-energy features are related to the multiple-scattering processes (EXAFS) on the nearest atoms. The intensity of the feature at 550-560 eV is attributed for the first time to the value of the metal-oxygcn-mctal bond angle.

Original language	English
Pages (from-to)	101-105
Number of pages	5
Journal	Ionics
Volume	4
Issue number	1-2
DOIs	https://doi.org/10.1007/BF02375786
Publication status	Published - Jan 1998

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title = "Study of the electronic structure of Rhenium and Tungsten oxides on the O K-edge",

abstract = "Oxygen K-edge x-ray absorption spectra were studied on the electrochromic amorphous thin film a-WO3 in the comparison with crystalline oxides having variable electronic (d(), d1, d2) and atomic structure: monoclinic m-WO3 (insulator - d{"}), cubic Nao6WO3 (metal - d1), cubic ReO, (metal - d1), layered-type hexagonal h-WO3 WO3 H 2O and with intercalated HxReO3 (metal - d 2), HxWO3 oxides having a metal-isulating transition. The changes in the XANES range 10-15 eV above the absorption edge are interpreted based on the known band-structure calculations. The high-energy features are related to the multiple-scattering processes (EXAFS) on the nearest atoms. The intensity of the feature at 550-560 eV is attributed for the first time to the value of the metal-oxygcn-mctal bond angle.",

author = "J. Purans and A. Kuzmin and Ph Parent and C. Laffone",

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doi = "10.1007/BF02375786",

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T1 - Study of the electronic structure of Rhenium and Tungsten oxides on the O K-edge

AU - Purans, J.

AU - Kuzmin, A.

AU - Parent, Ph

AU - Laffone, C.

PY - 1998/1

Y1 - 1998/1

N2 - Oxygen K-edge x-ray absorption spectra were studied on the electrochromic amorphous thin film a-WO3 in the comparison with crystalline oxides having variable electronic (d(), d1, d2) and atomic structure: monoclinic m-WO3 (insulator - d"), cubic Nao6WO3 (metal - d1), cubic ReO, (metal - d1), layered-type hexagonal h-WO3 WO3 H 2O and with intercalated HxReO3 (metal - d 2), HxWO3 oxides having a metal-isulating transition. The changes in the XANES range 10-15 eV above the absorption edge are interpreted based on the known band-structure calculations. The high-energy features are related to the multiple-scattering processes (EXAFS) on the nearest atoms. The intensity of the feature at 550-560 eV is attributed for the first time to the value of the metal-oxygcn-mctal bond angle.

AB - Oxygen K-edge x-ray absorption spectra were studied on the electrochromic amorphous thin film a-WO3 in the comparison with crystalline oxides having variable electronic (d(), d1, d2) and atomic structure: monoclinic m-WO3 (insulator - d"), cubic Nao6WO3 (metal - d1), cubic ReO, (metal - d1), layered-type hexagonal h-WO3 WO3 H 2O and with intercalated HxReO3 (metal - d 2), HxWO3 oxides having a metal-isulating transition. The changes in the XANES range 10-15 eV above the absorption edge are interpreted based on the known band-structure calculations. The high-energy features are related to the multiple-scattering processes (EXAFS) on the nearest atoms. The intensity of the feature at 550-560 eV is attributed for the first time to the value of the metal-oxygcn-mctal bond angle.

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IS - 1-2

ER -

Study of the electronic structure of Rhenium and Tungsten oxides on the O K-edge

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