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Published Online: 28 Feb 2002
Copyright © 2002 WILEY-VCH Verlag Berlin GmbH, Fed. Rep. of Germany
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Original PaperInterface Structure and Indirect Coupling in Annealed Fe/Cr/Fe Ultrathin Films | M. Kubik 1, B. Handke 1, W. Kara 1, N. Spiridis 2, T. lzak 1, J. Korecki 1 | 1Faculty of Physics and Nuclear Techniques, University of Mining and Metallurgy, al. Mickiewicza 30, PL-30-059 Kraków, Poland 2Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, ul. Niezapominajek 8, PL-30-239 Kraków, Poland
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68.35.Ct • 68.60.Dv • 75.70.Ak • 75.70.Cn • 76.80.+y • S1.1 • S1.2 |
Molecular beam epitaxy grown (001) oriented Cr/Fe/Cr and Cr/Fe/Cr/Fe/Cr sandwiches were characterized using the conversion electron Mössbauer spectroscopy (CEMS), which proved that the FeCr interface extended up to about 2.5 atomic layers. Analysis of the CEMS results was based on a simple alloy-model of the Fe/Cr interface, resulting in concentration profiles of Fe and Cr atoms. The derived interface model was then used to study the effect of thermal annealing on the film properties. The CEMS studies were correlated with the measurements of the indirect exchange coupling followed by the magneto-optic Kerr effect. Whereas CEMS revealed a measurable effect of annealing on the interface atomic structure for the annealing temperature TA = 200 °C, the coupling character began to change at considerably higher temperature (about 400 °C). |
Received: 1 May 2001; Accepted: 30 September 2001 10.1002/1521-396X(200202)189:3<705::AID-PSSA705>3.0.CO;2-J About DOI
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