“Switching” of the nanodomain state of the frustrated ferromagnet–antiferromagnet system by an external magnetic field

The phenomenon of “switching” of the domain walls generated by frustrations in a two-layer ferromagnet–antiferromagnet nanostructure has been studied using numerical simulation methods. This phenomenon manifests itself in the fact that, as the magnetic field increases, the ferromagnetic layer divided into nanodomains by domain walls perpendicular to the layer plane becomes single-domain, and the antiferromagnetic layer that is uniform in weak fields is divided into 180$^\circ$ domains by the domain walls perpendicular to the layer. The structures of these domain walls have been calculated in various magnetic fields.