The peculiarities of magnetic structure phase diagram of Fe/Cr/Fe layers

Abstract The effects of exchange interaction at Fe/Cr interfaces on the formation of magnetic structure of Fe/Cr/Fe three layer thin film are studied in this paper. It is supposed that antiferromagnetic ordering in Cr has the form of transverse linear polarized spin density wave (lSDW) with a wave vector perpendicular to the film surface. It is established that the model proposed allows one to distinguish between three types of iron layer magnetic moments mutual orientation: ferromagnetic, antiferromagnetic and non-collinear. One can observe three species of non-collinear structure: the first corresponds to the orientation of resulting total iron magnetization M Fe along Cr antiferromagnetism vector L, the second can be referred to M Fe ⊥ L orientation, structures with intermediate values of angle between M Fe and L belong to the third species. Phase diagram containing the regions of existence of all aforementioned magnetic structures is obtained.