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Magnetic moment enhancement at the Fe(100)/Co(bcc) interface: a nanometer-scale investigation from electron energy loss spectra

Published online by Cambridge University Press:  07 June 2011

R. Serra ,
L. Calmels ,
S. Andrieu  and
V. Serin
R. Serra
Affiliation:
CEMES-CNRS, Université de Toulouse, 29 rue Jeanne Marvig, BP 94347, 31055 Toulouse Cedex 4, France
L. Calmels*
Affiliation:
CEMES-CNRS, Université de Toulouse, 29 rue Jeanne Marvig, BP 94347, 31055 Toulouse Cedex 4, France
S. Andrieu
Affiliation:
LPM UMR 7556 CNRS-Nancy Université, BP 239, 54506 Vandœuvre, France
V. Serin
Affiliation:
CEMES-CNRS, Université de Toulouse, 29 rue Jeanne Marvig, BP 94347, 31055 Toulouse Cedex 4, France
*
ae-mail: [email protected]

Abstract

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The electronic structure and the magnetic moment of metallic iron are strongly modified near the Fe(100)/Co(bcc) interface. This effect has been evaluated from the iron L2,3 energy loss near edge structure recorded for Fe/Co superlattices grown by molecular beam epitaxy with different periods. The interface-induced modification of the intensity ratio I(L3)/I(L2) which has been measured by electron energy loss spectroscopy is in good agreement with the enhancement of the magnetic moment calculated from first principles. This shows that the intensity ratio can be used to obtain information on magnetic moments at a nanometer scale in a transmission electron microscope.

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 , 33509
Copyright
© EDP Sciences, 2011

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