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Electronic structure of Al-Cr-Fe intermetallics

Published online by Cambridge University Press:  01 February 2011

Esther Belin-Ferré ,
Zoltan Dankhazi ,
Marie-Françoise Fontaine ,
Jean Thirion ,
Marie-Cécile de Weerd  and
Jean Marie Dubois
Esther Belin-Ferré
Affiliation:
Laboratoire de Chimie Physique Matière et Rayonnement (UMR 7614), 11 rue Pierre et Marie Curie, F-75231 Paris Cedex 05.
Zoltan Dankhazi
Affiliation:
Institute for Solid State Physics, Lorand Eötvös University Budapest, Pazmany P. setany 1/A, H-1117 Budapest.
Marie-Françoise Fontaine
Affiliation:
Laboratoire de Chimie Physique Matière et Rayonnement (UMR 7614), 11 rue Pierre et Marie Curie, F-75231 Paris Cedex 05.
Jean Thirion
Affiliation:
Laboratoire de Chimie Physique Matière et Rayonnement (UMR 7614), 11 rue Pierre et Marie Curie, F-75231 Paris Cedex 05.
Marie-Cécile de Weerd
Affiliation:
Laboratoire de Science et Génie des Matériaux et de Métallurgie, Centre d'Ingénierie des Matériaux, Ecole des Mines de Nancy, F-54042 Nancy.
Jean Marie Dubois
Affiliation:
Laboratoire de Science et Génie des Matériaux et de Métallurgie, Centre d'Ingénierie des Matériaux, Ecole des Mines de Nancy, F-54042 Nancy.
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Abstract

We report here the results obtained for the valence band of four compounds from the Al-Cr-Fe system, all being approximants of the decagonal quasicrystalline phase as probed by a combination of X-ray emission and X-ray photoemission spectroscopy techniques. Salient features are d-d and p-d hybridizations at the Fermi level and in its close vicinity as well as a repulsive interaction between the d states of the two transition elements. Within about 4 eV below the Fermi level Al states are suggested to be of more localized-like character in the Al-Cr-Fe samples than in Al-Cu-Fe ones.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 805: Symposium LL – Quasicrystals , 2003 , LL4.4
Copyright
Copyright © Materials Research Society 2004

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