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A strategy for simulating Electron Energy-Loss Near-Edge Structures of nanoparticles: application to size effects in Gd2O3

Published online by Cambridge University Press:  09 June 2011

T. Épicier ,
J.-C. Le Bossé ,
P. Perriat ,
S. Roux  and
O. Tillement
T. Épicier*
Affiliation:
INSA-Lyon, MATEIS CNRS UMR5510, Bât. Blaise Pascal, 69621 Villeurbanne Cedex, France
J.-C. Le Bossé
Affiliation:
INSA-Lyon, MATEIS CNRS UMR5510, Bât. Blaise Pascal, 69621 Villeurbanne Cedex, France
P. Perriat
Affiliation:
INSA-Lyon, MATEIS CNRS UMR5510, Bât. Blaise Pascal, 69621 Villeurbanne Cedex, France
S. Roux
Affiliation:
Université de Lyon, Université Lyon 1, LPCML CNRS UMR5620, 69622 Villeurbanne Cedex, France
O. Tillement
Affiliation:
Université de Lyon, Université Lyon 1, LPCML CNRS UMR5620, 69622 Villeurbanne Cedex, France
*
a e-mail: [email protected]

Abstract

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Nanoparticles (NPs) have attracted a considerable interest in the last decades, owing to their remarkable physical and chemical properties. The most important characteristic of NPs is the size effect, that is, their properties differ from that of the corresponding bulk material. We will focus here on Electron Energy-Loss Spectroscopy (EELS) investigations of Gd2O3 NPs of different and controlled sizes. EELS spectra near the O-K edge of Gd2O3 were recorded and compared with feff8.2 ELNES simulations. The calculation of the EELS response from small particles by the feff code raises some particular problems which have been carefully examined and partially solved. The simulations are in fair agreement with experiment and reveal the existence of size effects.

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 54 , Issue 3: Focus on Recent advances in (S)TEM and related spectroscopies: a tribute to C. Colliex , June 2011 , 33511
Copyright
© EDP Sciences

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