Eur. Phys. J. B (2018) 91: 90
https://doi.org/10.1140/epjb/e2018-90006-0

Regular Article

Collective motion of magnetization in two-dimensional arrays of square elements

¹ Kirensky Institute of Physics, Krasnoyarsk Scientific Center, Russian Academy of Sciences, Siberian Branch, Krasnoyarsk 660036, Russia
² Siberian Federal University, Krasnoyarsk 660041, Russia
³ Krasnoyarsk State Pedagogical University after V.P. Astaf’ev, Krasnoyarsk 660049, Russia

^a e-mail: orlhome@rambler.ru

Received: 3 January 2018
Received in final form: 18 March 2018
Published online: 30 May 2018

Abstract

The resonance in a two-dimensional array of square ferromagnetic elements has been experimentally investigated. The magnetization of the elements is shown to be in the vortex state. The resonance peak splitting in the array with increasing density of the elements has been established. The explanation of this phenomenon is proposed and eigenfrequencies of the collective modes are theoretically estimated. Different combinations of polarities and chiralities of the nearest elements in the array are examined.