Journal of Magnetism and Magnetic Materials
Volume 103, Issue 3
,
2 January 1992,
Pages 236-244
doi:10.1016/0304-8853(92)90195-T 
Copyright © 1992 Published by Elsevier Science B.V. All rights reserved.
Higher order interaction terms in coupled Fe/Cr/Fe sandwich structures
U. Köbler, K. Wagner, R. Wiechers, A. Fuß and W. Zinn
Institut für Festkörperforschung, Forschungszentrum Jülich, W-5170, Jülich, Germany
Received 14 August 1991. Available online 31 July 2002.
Abstract
From experimental studies of magnetization curves of Fe/Cr/Fe sandwich structures grown epitaxially on GaAs (100) substrates there is evidence for a cosine-square term in addition to the linear Heisenberg-like interlayer exchange interaction. The different dependences of both exchange mechanisms with the interlayer thickness are shown to result in thickness ranges where the biquadratic term even dominates the linear one which results in characteristic anomalies in the remagnetization behaviour.
