Solids

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

V. A. Orlov^ab, V. S. Prokopenko^c, R. Yu. Rudenko^a, I. N. Orlova<sup>c

a</sup> Siberian Federal University, Krasnoyarsk, Russia
^b L. V. Kirensky Institute of Physics, Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk, Russia
^c Krasnoyarsk State Pedagogical University named after V. P. Astaf'ev, Krasnoyarsk, Russia

Abstract: The problem of the frequency spectrum of collective gyrotropic modes in a finite linear chain of magnetostatically interacting ferromagnetic disks has been considered. It has been shown that by analyzing the frequency spectrum, one can derive information about the magnetization eddy state for each of the nanodisks in the chain. The feasibility of recording the frequency spectrum as a tool for data readout in magnetic memory devices has been discussed.

Keywords: magnetic vortex, ferromagnetic resonance, collective modes.

Received: 08.10.2021
Revised: 17.12.2021
Accepted: 21.12.2021

DOI: 10.21883/JTF.2022.04.52243.273-21

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