Bezverkhnii A. I.
1, Gubanov V. A.
2, Sadovnikov A. V.
2, Morgunov R. B.
11Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Moscow oblast, Russia
2Saratov State University, Saratov, Russia
Email: bezverhnii.alex@gmail.com, vladmeen@gmail.com, sadovnikovav@gmail.com, morgunov2005@yandex.ru
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~ 1.7-2.3 erg/cm2. 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 ~1.4 erg/cm2. 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 .
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