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DOI: 10.1016/S0304-8853(01)00888-5
PII: S0304-8853(01)00888-5
Copyright © 2001 Published by Elsevier Science B.V. All rights reserved.

Epitaxial growth, alloying and magnetic structure of interfaces in Fe/Cr (0 0 1) superlattices

V. Uzdin^a, W. Keune^{, , b} and M. Walterfang<sup>, b

a</sup> St. Petersburg State University, ICAPE, 14 linia V.O. 29, 199178, St. Petersburg, Russia
^b Laboratorium für Angewandte Physik, Gerhard-Mercator-Universität Duisburg, Lotharstr. 65, D-47048 Duisburg, Germany

Available online 30 October 2001.

Abstract

Fe/Cr(0 0 1) superlattices containing two-monolayers thick ⁵⁷Fe probe layers at the Fe/Cr (Fe-on-Cr) or Cr/Fe (Cr-on-Fe) interfaces were studied using conversion electron Mössbauer spectroscopy (CEMS). For the interpretation of the CEMS data of superlattices annealed at different temperatures, we performed theoretical modeling of their chemical and magnetic structure. Roughness and interface alloying were introduced to the model by algorithms of epitaxial growth, which included ballistic deposition with subsequent floating of some atoms on the surface. Self-consistent calculations of magnetic moments within the periodic Anderson model confirmed the proportionality between hyperfine fields and magnetic moments. For the explanation of the evolution of CEM spectra versus annealing temperature, the difference in the melting points of bulk Fe and Cr has to be taken into account.

Author Keywords: Mössbauer spectroscopy; Multilayers; Annealing; Magnetic structure; Fe_¯Cr

Article Outline

References

References

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Corresponding author. Tel.: +49-203-379-2387; fax: +49-203-379-3601; email: keune@uni-duisburg.de
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