Anomalous antiferromagnetic coupling in Fe/Si/Fe structures with Co "dusting''

URN to cite this document:: urn:nbn:de:bvb:355-epub-228931

Gareev, R. R. ; Buchmeier, M. ; Kiessling, Matthias ; Woltersdorf, Georg ; Back, Christian H.

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Date of publication of this fulltext: 07 Dec 2011 08:41

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Abstract

We report on anomalous antiferromagnetic coupling in Fe/Si/Fe epitaxial structures with interfacial cobalt “dusting”. Antiferromagnetic coupling exceeds 75 μJ/m2 for a 2.0 nm-thick Si spacer and is still detectable for a 2.3 nm-thick spacer at room temperature. From room temperature to T**∼150K the magnetization follows Bloch's law and the coupling shows metallic-type behaviour; for lower ...