Abstract
The spatial instability of the nonlinear magnetization precession in uniaxial films with low magnetization is analyzed analytically and numerically solving Landau–Lifshitz equations. The foldover effect is essential in this geometry. The formation of spatial soliton-like magnetization precessions is predicted for nonuniform driving inductions exceeding the threshold value. Time–space instability boundaries of the obtained soliton-like structures are calculated. The numerical simulations show that these structures are stabilized at the boundaries of the foldover region. This behavior is in qualitative agreement with a recent experiment where a spatial pattern formation by a nonuniformly driven ferromagnetic resonance in a garnet film has been observed.
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