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Vacuum, Vol. 63 (1-2) (2001) pp. 337-344
© 2001 Elsevier Science Ltd. All rights reserved.
PII: S0042-207X(01)00210-X
Interface modeling in Cr/Fe/Cr sandwiches studied by CEMS
M. Kubik a, T. 
l
zak a, M. Przybylski a, W. Kara
a and J. Korecki a,b * korecki@uci.agh.edu.pl
a Department of Solid State Physics, Faculty of Physics and Nuclear Techniques, University of Mining and Metallurgy, Al. Mickiewicza 30, 30-059 Kraków, Poland
b Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, ul. Niezapominajek 8, 30-239 Kraków, Poland
Abstract
Conversion electron Mössbauer spectroscopy (CEMS) was applied to model the buried interfaces in epitaxial 1-14 monolayer (ML) Fe(001) films sandwiched between Cr(001) layers. The local arrangement of Fe and Cr was derived by analysis of the experimental hyperfine field distributions determined from 80K CEMS spectra. A discontinuity in magnetic properties for the 6ML Fe film suggests that a modification of the magnetic structure occurs at this thickness. The 57Fe probe layer analysis showed that Cr/Fe and Fe/Cr interfaces are non-equivalent. The lower interface showed up to be smoother than the upper one. The Fe concentration profile obtained form the CEMS analysis displayed a considerable interface Fe-Cr alloying for films deposited at the room temperature.
PACS:
75.70.Ak; 76.80.+y Keywords:
CEMS; Fe; Cr; Ultra thin epitaxial films; Interface structure; Alloying
*Corresponding author. Faculty of Physics and Nuclear Techniques, University of Mining and Metallurgy, A
. Mickiewicza 30, 30-059 Krakow, Poland. Fax: +48-12-643-1247
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