Abstract
The results of a study of low-frequency ferromagnetic resonance in a system of two overlapping permalloy disks by magnetic resonance force spectroscopy are presented. It is shown that the resonant frequency of the gyrotropic mode of oscillations of magnetic vortices in this system significantly depends on the vorticity of their shells. The experimental dependences of the resonant frequencies of various states on the external magnetic field are qualitatively consistent with the results of micromagnetic modeling. Keywords: ferromagnetic resonance, magnetic resonance force spectroscopy, magnetic vortices.
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