ELECTRON-ENERGY-LOSS NEAR-EDGE SPECTROSCOPY OF OXYGEN IN AMORPHOUS AND CRYSTALLINE WO3 AND MOO3

G  MOUNTJOY; J  YUAN; P H  GASKELL

ELECTRON-ENERGY-LOSS NEAR-EDGE SPECTROSCOPY OF OXYGEN IN AMORPHOUS AND CRYSTALLINE WO3 AND MOO3

G MOUNTJOY, J YUAN, P H GASKELL

Physics

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

EELS has been used to measure the low loss and oxygen K-edge spectra of crystalline WO3 and MoO3 and amorphous W and Mo oxide thin films prepared by electron-beam evaporation. The O K-edge spectra all show a sharp peak at the edge onset. Using a molecular orbital approach, this first peak has been identified as a t(2g)(*) band, consistent with the band structure of c-WO3 calculated by Bullett. In the amorphous oxides, the first peak is reduced and higher energy peaks are broadened. The O K-edge spectra of a-WO3-x after beam damage show further reduction of the first peak, and are very similar to the spectrum for coloured a-WO3 observed by Hashimoto.

Original language	English
Title of host publication	ELECTRON MICROSCOPY AND ANALYSIS 1993
Editors	AJ Craven
Place of Publication	BRISTOL
Publisher	IOP Publishing
Pages	35-38
Number of pages	4
ISBN (Print)	0-7503-0321-2
Publication status	Published - 1993

Cite this

@inproceedings{7e78d0218ced40268587a39cb314757f,

title = "ELECTRON-ENERGY-LOSS NEAR-EDGE SPECTROSCOPY OF OXYGEN IN AMORPHOUS AND CRYSTALLINE WO3 AND MOO3",

abstract = "EELS has been used to measure the low loss and oxygen K-edge spectra of crystalline WO3 and MoO3 and amorphous W and Mo oxide thin films prepared by electron-beam evaporation. The O K-edge spectra all show a sharp peak at the edge onset. Using a molecular orbital approach, this first peak has been identified as a t(2g)(*) band, consistent with the band structure of c-WO3 calculated by Bullett. In the amorphous oxides, the first peak is reduced and higher energy peaks are broadened. The O K-edge spectra of a-WO3-x after beam damage show further reduction of the first peak, and are very similar to the spectrum for coloured a-WO3 observed by Hashimoto.",

author = "G MOUNTJOY and J YUAN and GASKELL, {P H}",

year = "1993",

language = "English",

isbn = "0-7503-0321-2",

pages = "35--38",

editor = "AJ Craven",

booktitle = "ELECTRON MICROSCOPY AND ANALYSIS 1993",

publisher = "IOP Publishing",

address = "United Kingdom",

}

TY - GEN

T1 - ELECTRON-ENERGY-LOSS NEAR-EDGE SPECTROSCOPY OF OXYGEN IN AMORPHOUS AND CRYSTALLINE WO3 AND MOO3

AU - MOUNTJOY, G

AU - YUAN, J

AU - GASKELL, P H

PY - 1993

Y1 - 1993

N2 - EELS has been used to measure the low loss and oxygen K-edge spectra of crystalline WO3 and MoO3 and amorphous W and Mo oxide thin films prepared by electron-beam evaporation. The O K-edge spectra all show a sharp peak at the edge onset. Using a molecular orbital approach, this first peak has been identified as a t(2g)(*) band, consistent with the band structure of c-WO3 calculated by Bullett. In the amorphous oxides, the first peak is reduced and higher energy peaks are broadened. The O K-edge spectra of a-WO3-x after beam damage show further reduction of the first peak, and are very similar to the spectrum for coloured a-WO3 observed by Hashimoto.

AB - EELS has been used to measure the low loss and oxygen K-edge spectra of crystalline WO3 and MoO3 and amorphous W and Mo oxide thin films prepared by electron-beam evaporation. The O K-edge spectra all show a sharp peak at the edge onset. Using a molecular orbital approach, this first peak has been identified as a t(2g)(*) band, consistent with the band structure of c-WO3 calculated by Bullett. In the amorphous oxides, the first peak is reduced and higher energy peaks are broadened. The O K-edge spectra of a-WO3-x after beam damage show further reduction of the first peak, and are very similar to the spectrum for coloured a-WO3 observed by Hashimoto.

M3 - Conference contribution

SN - 0-7503-0321-2

SP - 35

EP - 38

BT - ELECTRON MICROSCOPY AND ANALYSIS 1993

A2 - Craven, AJ

PB - IOP Publishing

CY - BRISTOL

ER -