Oxygen interstitial structures in close-packed metal oxides.
CHEM PHYS LETT
44 - 48.
We examine oxygen incorporation in alpha-Al2O3 using electronic structure techniques. We demonstrate that the ground-state configuration is a peroxide split interstitial, which is more than 2 eV lower in energy than the oxide closed-shell interstitial species in alumina, which proves to be only a transition state. Our results have general implications for the nature of oxygen interstitials in close-packed oxides. (C) 2010 Elsevier B.V. All rights reserved.
|Title:||Oxygen interstitial structures in close-packed metal oxides|
|Keywords:||POINT-DEFECTS, CORUNDUM CRYSTALS, ATOMIC OXYGEN, ALPHA-AL2O3, ADSORPTION, DIFFUSION, SURFACE, AL2O3, MODEL, TIO2|
|UCL classification:||UCL > School of BEAMS > Faculty of Maths and Physical Sciences > Chemistry|
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