Low-frequency spectrum of gyrotropic modes of a finite chain interacting ferromagnetic nanodiscs

The problem of the spectrum frequencies of collective gyrotropic modes of a finite linear chain magnetostatically interacting ferromagnetic nanodiscs is considers in this paper. It is shown that information about the vortex the magnetization state of each of the nanodiscs in the chain can be obtained from frequency spectrum analysis. The prospect of using registration is discussed frequency spectrum as a way of reading information in magnetic memory devices. Keywords: magnetic vortex, ferromagnetic resonance, collective modes.