Bifurcation magnetic resonance in type (100) films upon in-plane magnetization

Abstract

The magnetization dynamics in (100) single crystal films with a cubic anisotropy has been studied by numerical simulation. It has been shown that the additional (bifurcation) resonance caused by the bista bility, i.e., two closely spaced equilibrium magnetization states, appears upon in plane magnetization along the hard axis. The change in the resonance region and the corresponding dynamic regimes with a variation in the RF field or with a small detuning of the magnetizing field has been investigated. The regular and chaotic precession regimes near the bifurcation resonance have been revealed. The states of dynamic bistability have been found.