Tatarskiy D.A.1,2, Gusev N.S.1,2, Ermolaeva O.L.1, Orlova A.N.1, Mironov V.L.1, Gusev S.A.1
1Institute for Physics of Microstructures, Russian Academy of Sciences, Nizhny Novgorod, Russia
2Lobachevsky State University, Nizhny Novgorod, Russia
Email: tatarsky@ipmras.ru
The results of systematic experimental studies of the magnetic state and crystal structure of multilayer films based on a ferromagnet/heavy metal pair (Co/Pt) by optical magnetometry, magnetic force microscopy, Lorentz and analytical transmission electron microscopy are presented. It is shown that with an increase in the number of Co/Pt periods in the films, an increase in the average size of crystal grains is observed, which leads to an increase in the dispersion of perpendicular anisotropy and, as a consequence, to a decrease in the size of magnetic domains and magnetization reversal fields. In addition, in films with n≥6 periods, the domain wall becomes hybrid; has an intermediate structure between the walls of the Neel and Bloch types. Keywords: Neel domain wall, cobalt-platinum, Dzyaloshinskii-Moriya interaction, Lorentz transmission electron microscopy, magnetic force microscopy. DOI: 10.61011/PSS.2023.07.56405.40H
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