Abstract
The frustrations of exchange interaction between ferromagnetic and antiferromagnetic layers, which arise at the uncompensated interface between the layers due to the interface roughness, have been described. The distribution of magnetic order parameters in the vicinity of the interface between the layers has been investigated, and the “layer thickness-roughness” magnetic phase diagram has been obtained in the case of the two-layer ferromagnet-antiferromagnet system and the ferromagnet-antiferromagnet-ferromagnet spin-valve system. An analysis has been performed taking into account the single-ion anisotropy energy, i.e., beyond the scope of the exchange approximation. It has been demonstrated that the number of easy axes in the layer plane, in many respects, determines the existence of an exchange shift of the hysteresis loop of the ferromagnet due to its interaction with the antiferromagnetic substrate.
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Original Russian Text © A.I. Morosov, A.S. Sigov, 2012, published in Fizika Tverdogo Tela, 2012, Vol. 54, No. 2, pp. 209–229.
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Morosov, A.I., Sigov, A.S. Frustrated multilayer ferromagnet-antiferromagnet structures: Beyond the scope of the exchange approximation (a review). Phys. Solid State 54, 219–242 (2012). https://doi.org/10.1134/S1063783412020187
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DOI: https://doi.org/10.1134/S1063783412020187