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Spectroscopic study of interfaces in Al/Ni periodic multilayers

Published online by Cambridge University Press:  31 January 2009

K. Le Guen ,
G. Gamblin ,
P. Jonnard ,
M. Salou ,
J. Ben Youssef ,
S. Rioual  and
B. Rouvellou
K. Le Guen*
Affiliation:
Laboratoire de Chimie-Physique - Matière et Rayonnement, UPMC Univ Paris 06, CNRS-UMR 7614, 11 rue Pierre et Marie Curie, 75231 Paris Cedex 05, France
G. Gamblin
Affiliation:
Laboratoire de Chimie-Physique - Matière et Rayonnement, UPMC Univ Paris 06, CNRS-UMR 7614, 11 rue Pierre et Marie Curie, 75231 Paris Cedex 05, France
P. Jonnard
Affiliation:
Laboratoire de Chimie-Physique - Matière et Rayonnement, UPMC Univ Paris 06, CNRS-UMR 7614, 11 rue Pierre et Marie Curie, 75231 Paris Cedex 05, France
M. Salou
Affiliation:
Laboratoire de Magnétisme de Bretagne, FRE/CNRS 2697, Université de Bretagne Occidentale, 6 avenue Le Gorgeu, CS 93837, 29238 Brest Cedex 3, France
J. Ben Youssef
Affiliation:
Laboratoire de Magnétisme de Bretagne, FRE/CNRS 2697, Université de Bretagne Occidentale, 6 avenue Le Gorgeu, CS 93837, 29238 Brest Cedex 3, France
S. Rioual
Affiliation:
Laboratoire de Magnétisme de Bretagne, FRE/CNRS 2697, Université de Bretagne Occidentale, 6 avenue Le Gorgeu, CS 93837, 29238 Brest Cedex 3, France
B. Rouvellou
Affiliation:
Laboratoire de Magnétisme de Bretagne, FRE/CNRS 2697, Université de Bretagne Occidentale, 6 avenue Le Gorgeu, CS 93837, 29238 Brest Cedex 3, France
*
[email protected]
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Abstract

Using electron-induced X-ray emission spectroscopy (XES), we have studied two Al/Ni periodic multilayers that differ only by their annealing temperature: as-deposited and annealed at 115 °C. Our aim is to show that XES can provide further details about the chemistry at the metal-metal interface, in addition to what is obtained by X-ray diffraction. The distribution of valence states exhibiting Al 3p and Ni 3d character is determined from the analysis of the Al $K\beta$ and Ni $L\alpha$ emission bands respectively. The multilayer emission bands are compared to those of reference materials: pure Al and Ni metals as well as Al3Ni, Al3Ni2 and AlNi intermetallics. We provide evidence that, for temperatures up to 115 °C, Al3Ni is the major component of the multilayer.

Keywords

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 45 , Issue 2 , February 2009 , 20502
Copyright
© EDP Sciences, 2008

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