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Experimental and theoretical study of CVV Auger peaks of selected aluminium and carbon compounds
Author(s) -
Timmermans B.,
Hubin A.,
Vaeck N.,
Reniers F.
Publication year - 2004
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.1767
Subject(s) - auger , valence band , tungsten , aluminium , carbide , chemistry , auger effect , atomic physics , transition metal , valence (chemistry) , analytical chemistry (journal) , condensed matter physics , physics , band gap , biochemistry , organic chemistry , chromatography , catalysis
Abstract The Auger valence peak of Al 2 O 3 , Al and carbon compounds (graphite, fullerene, carbides) has been studied experimentally and theoretically. It is demonstrated, from a comparison of the experimental spectrum with the self‐convolution of the valence band, that the Al CVV transition in Al 2 O 3 is an intra‐atomic transition. The behaviour of the C KVV Auger peak is shown to be intermediate between atomic and band‐like transitions. The different experimental carbide peaks could be reconstructed by a self‐convolution of the valence band and the introduction of a hole–hole repulsion term extracted from the Cini–Sawatzki equation. A non‐expected behaviour of the satellite peak at 280 eV for tungsten and chromium carbide is shown and interpreted, with a comparison with the Ramaker approach. Copyright © 2004 John Wiley & Sons, Ltd.