This article is cited in 1 paper

Continued publication of the materials of the seminar in FTT N 01/22
Magnetism

Dzyaloshinskii–Moriya interaction in Pt/Co/Ir/Co/Pt synthetic ferrimagnets

A. I. Bezverkhnii^a, V. A. Gubanov^b, A. V. Sadovnikov^b, R. B. Morgunov<sup>a

a</sup> Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Moscow region
^b Saratov State University

Abstract: We had found nonreciprocity of spin waves in Pt/Co/Ir/Co/Pt synthetic ferrimagnets by Brillouin light scattering technique. It is shown that the main contribution to the nonreciprocity of spin waves is made by the Dzyaloshinskii–Moriya interaction with an energy density $D\approx$ 1.7 – 2.3 erg/cm$^2$. The energy density of the Dzyaloshinsky–Moriya interaction in Pt/Co/Ir/Co/Pt synthetic ferrimagnets is higher than its values in heterostructures with one Co layer Pt/Co(1 nm)/Ir $\sim$ 1.4 erg/cm$^2$. The D value of synthetic ferrimagnets decreases with increasing thickness of the Co thin layer.

Keywords: synthetic ferrimagnets, perpendicular magnetic anisotropy, Brillouin light scattering, exchange interaction, Dzyaloshinskii–Moriya interaction.

Received: 19.05.2021
Revised: 02.08.2021
Accepted: 03.08.2021

DOI: 10.21883/FTT.2021.12.51665.120

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