Interpretation of oxygen K pre-edge peak in complex oxides

Nan Jiang; John Spence

doi:10.1016/j.ultramic.2005.07.004

Interpretation of oxygen K pre-edge peak in complex oxides

Nan Jiang, John Spence

Research output: Contribution to journal › Article

37 Scopus citations

Abstract

A controversial pre-edge peak has often been observed at the O K-edge in absorption spectra from complex oxides. We study this feature in both K ₂O-SiO₂ glass and MgAl₂O₄ spinel crystals. Our time-resolved energy-loss spectroscopy (EELS) results indicate that the pre-edge peak is due to radiation damage, rather than from any intrinsic feature of the material. It is assigned to the π* peak due to the O-O interaction.

Original language	English (US)
Pages (from-to)	215-219
Number of pages	5
Journal	Ultramicroscopy
Volume	106
Issue number	3
DOIs	https://doi.org/10.1016/j.ultramic.2005.07.004
State	Published - Feb 1 2006

Keywords

Ceramics and refractories
Electron and positron radiation effects
Electron energy loss spectroscopy
Glasses
KO-SiO
MgAl O

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Instrumentation

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Jiang, N., & Spence, J. (2006). Interpretation of oxygen K pre-edge peak in complex oxides. Ultramicroscopy, 106(3), 215-219. https://doi.org/10.1016/j.ultramic.2005.07.004

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abstract = "A controversial pre-edge peak has often been observed at the O K-edge in absorption spectra from complex oxides. We study this feature in both K 2O-SiO2 glass and MgAl2O4 spinel crystals. Our time-resolved energy-loss spectroscopy (EELS) results indicate that the pre-edge peak is due to radiation damage, rather than from any intrinsic feature of the material. It is assigned to the π* peak due to the O-O interaction.",

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AB - A controversial pre-edge peak has often been observed at the O K-edge in absorption spectra from complex oxides. We study this feature in both K 2O-SiO2 glass and MgAl2O4 spinel crystals. Our time-resolved energy-loss spectroscopy (EELS) results indicate that the pre-edge peak is due to radiation damage, rather than from any intrinsic feature of the material. It is assigned to the π* peak due to the O-O interaction.

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