Physics of the Solid State
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Dzyaloshinskii-Moriya interaction in Pt/Co/Ir/Co/Pt synthetic ferrimagnets
Bezverkhnii A. I.
1, Gubanov V. A.
2, Sadovnikov A. V.
2, Morgunov R. B.
1
1Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Moscow oblast, Russia
2Saratov State University, Saratov, 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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