Ferromagnetic resonance in monocrystalline spin valves CoFeB/Ta/CoFeB and CoFeB films with perpendicular magnetic anisotropy

Abstract : Orientation dependences of ferromagnetic resonance in a MgO/CoFeB/MgO/Ta film with one ferromagnetic layer (monolayer) and in a MgO/CoFeB/Ta/CoFeB/MgO/Ta spin valve containing two single crystal ferromagnetic CoFeB layers divided by a nonmagnetic Ta layer (bilayer) were investigated. Analysis of the orientation dependences of the structures with perpendicular magnetic anisotropy allowed calculating constants of magnetic anisotropy and damping factors. Physical reasons underlying the differences between these parameters in one-and two-layered structures are discussed.
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Submitted on : Monday, March 18, 2019 - 8:48:06 AM
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A. Talantsev, G. L’vova, O. Koplak, O. Dmitriev, Y. Lu, et al.. Ferromagnetic resonance in monocrystalline spin valves CoFeB/Ta/CoFeB and CoFeB films with perpendicular magnetic anisotropy. Fizika Tverdogo Tela / Physics of the Solid State, MAIK Nauka/Interperiodica, 2017, 59 (8), pp.1553-1557. ⟨10.1134/s1063783417080297⟩. ⟨hal-02011654⟩

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