Magnetization direction reorientation in ultrathin ferromagnetic films: Spin reorientation transition by H adsorption in the Valenta model

The magnetization of ultrathin ferromagnetic films depends in a very sensitive way on anisotropy fields which favor its particular orientation. We consider the spin reorientation transition in the ferromagnetic thin films within the Valenta model investigating the influence of different anisotropy fields on their magnetization behavior. It is shown that for certain values of the parameters a temperature-driven, a thickness-induced, and a H-induced switching transition from an in-plane to an out-of-plane ordered state may be observed. The use of the Valenta model allows us to present all dependences in the layer resolved mode which leads to the kinetics of the spin reorientation.