ELNES investigations of the oxygen K-edge in spinels

F. T. Docherty, A. J. Craven, D. W. McComb, Janet Mabel Scott Skakle

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

The results of a systematic study of the oxygen K-edge electron energy-loss spectroscopy (ELNES) from a series of aluminium- and chromium-containing spinels are presented. Extra fine structure in the region up to 10eV above the edge onset is observed for the chromium-containing compounds and is assigned to transitions to states created by mixing of oxygen 2p and metal 3d orbitals. The experimental data has been simulated using the multiple scattering code, FEFF8. Good agreement was obtained in the case of magnesium aluminate, but relatively poor agreement was obtained in the case of the chromites. The possible fingerprints in the oxygen K-edge ELNES corresponding to a high degree of inversion in the spinel structure and to a tetragonal distortion of the cubic structure are discussed. (C) 2001 Elsevier Science B.V. All rights reserved.

Original languageEnglish
Pages (from-to)273-288
Number of pages15
JournalUltramicroscopy
Volume86
DOIs
Publication statusPublished - 2001

Keywords

  • electron energy-loss spectroscopy
  • energy-loss near-edge structure
  • spinels
  • multiple scattering calculations
  • TRANSITION-METAL OXIDES
  • ENERGY-LOSS SPECTRA
  • ELECTRONIC-STRUCTURE
  • CATION DISTRIBUTION
  • LOSS SPECTROSCOPY
  • CRYSTALS

Cite this

ELNES investigations of the oxygen K-edge in spinels. / Docherty, F. T.; Craven, A. J.; McComb, D. W.; Skakle, Janet Mabel Scott.

In: Ultramicroscopy, Vol. 86, 2001, p. 273-288.

Research output: Contribution to journalArticle

Docherty, F. T. ; Craven, A. J. ; McComb, D. W. ; Skakle, Janet Mabel Scott. / ELNES investigations of the oxygen K-edge in spinels. In: Ultramicroscopy. 2001 ; Vol. 86. pp. 273-288.
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abstract = "The results of a systematic study of the oxygen K-edge electron energy-loss spectroscopy (ELNES) from a series of aluminium- and chromium-containing spinels are presented. Extra fine structure in the region up to 10eV above the edge onset is observed for the chromium-containing compounds and is assigned to transitions to states created by mixing of oxygen 2p and metal 3d orbitals. The experimental data has been simulated using the multiple scattering code, FEFF8. Good agreement was obtained in the case of magnesium aluminate, but relatively poor agreement was obtained in the case of the chromites. The possible fingerprints in the oxygen K-edge ELNES corresponding to a high degree of inversion in the spinel structure and to a tetragonal distortion of the cubic structure are discussed. (C) 2001 Elsevier Science B.V. All rights reserved.",
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T1 - ELNES investigations of the oxygen K-edge in spinels

AU - Docherty, F. T.

AU - Craven, A. J.

AU - McComb, D. W.

AU - Skakle, Janet Mabel Scott

PY - 2001

Y1 - 2001

N2 - The results of a systematic study of the oxygen K-edge electron energy-loss spectroscopy (ELNES) from a series of aluminium- and chromium-containing spinels are presented. Extra fine structure in the region up to 10eV above the edge onset is observed for the chromium-containing compounds and is assigned to transitions to states created by mixing of oxygen 2p and metal 3d orbitals. The experimental data has been simulated using the multiple scattering code, FEFF8. Good agreement was obtained in the case of magnesium aluminate, but relatively poor agreement was obtained in the case of the chromites. The possible fingerprints in the oxygen K-edge ELNES corresponding to a high degree of inversion in the spinel structure and to a tetragonal distortion of the cubic structure are discussed. (C) 2001 Elsevier Science B.V. All rights reserved.

AB - The results of a systematic study of the oxygen K-edge electron energy-loss spectroscopy (ELNES) from a series of aluminium- and chromium-containing spinels are presented. Extra fine structure in the region up to 10eV above the edge onset is observed for the chromium-containing compounds and is assigned to transitions to states created by mixing of oxygen 2p and metal 3d orbitals. The experimental data has been simulated using the multiple scattering code, FEFF8. Good agreement was obtained in the case of magnesium aluminate, but relatively poor agreement was obtained in the case of the chromites. The possible fingerprints in the oxygen K-edge ELNES corresponding to a high degree of inversion in the spinel structure and to a tetragonal distortion of the cubic structure are discussed. (C) 2001 Elsevier Science B.V. All rights reserved.

KW - electron energy-loss spectroscopy

KW - energy-loss near-edge structure

KW - spinels

KW - multiple scattering calculations

KW - TRANSITION-METAL OXIDES

KW - ENERGY-LOSS SPECTRA

KW - ELECTRONIC-STRUCTURE

KW - CATION DISTRIBUTION

KW - LOSS SPECTROSCOPY

KW - CRYSTALS

U2 - 10.1016/S0304-3991(00)00119-4

DO - 10.1016/S0304-3991(00)00119-4

M3 - Article

VL - 86

SP - 273

EP - 288

JO - Ultramicroscopy

JF - Ultramicroscopy

SN - 0304-3991

ER -