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 › peer-review

39 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 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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title = "Interpretation of oxygen K pre-edge peak in complex oxides",

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.",

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

author = "Nan Jiang and John Spence",

note = "Funding Information: This work is supported by NSF Grant no. DMR-0245702. We are grateful to Professor J. Silcox of Cornell University for advice and use of STEM, which was supported by NSF DMR-9632275 through the Center for Materials Research at Cornell University. We also gratefully acknowledge the use of facilities within the Center for Solid State Science at Arizona State University. ",

year = "2006",

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doi = "10.1016/j.ultramic.2005.07.004",

language = "English (US)",

volume = "106",

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journal = "Ultramicroscopy",

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T1 - Interpretation of oxygen K pre-edge peak in complex oxides

AU - Jiang, Nan

AU - Spence, John

N1 - Funding Information: This work is supported by NSF Grant no. DMR-0245702. We are grateful to Professor J. Silcox of Cornell University for advice and use of STEM, which was supported by NSF DMR-9632275 through the Center for Materials Research at Cornell University. We also gratefully acknowledge the use of facilities within the Center for Solid State Science at Arizona State University.

PY - 2006/2

Y1 - 2006/2

N2 - 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.

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.

KW - Ceramics and refractories

KW - Electron and positron radiation effects

KW - Electron energy loss spectroscopy

KW - Glasses

KW - KO-SiO

KW - MgAl O

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