Abstract
Temperature dependence of the magnetic properties of Fe/Ag vacuum evaporated multilayers was studied in a wide range of layer thickness. For Fe thickness larger than 1 nm continuous magnetic layers can be found, but its hyperfine field is significantly lower than that of pure α-Fe at elevated temperatures. It is attributed to a decrease of the Curie temperature due to Ag impurities in the Fe layer. Below 1 nm Fe thickness magnetic relaxation and the formation of a granular alloy with 35 T average hyperfine field was observed. Magnetoresistance results indicate the presence of Fe clusters in the Ag matrix, as well.
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Balogh, J., Kaptás, D., Kemény, T. et al. Atomic and Magnetic Structure of the Interface in Multilayers. Hyperfine Interactions 141, 13–20 (2002). https://doi.org/10.1023/A:1021206120466
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DOI: https://doi.org/10.1023/A:1021206120466