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

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...

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Bibliographic Details
Published in:Physics of the solid state 2017-08, Vol.59 (8), p.1553-1557
Main Authors: Talantsev, A. D., L’vova, G. L., Koplak, O. V., Dmitriev, O. S., Lu, Y., Mangin, S., Morgunov, R. B.
Format: Article
Language:English
Subjects:
Analysis
Anisotropy
Damping
Ferromagnetic materials
Ferromagnetic resonance
Ferromagnetism
Magnesium oxide
Magnetic anisotropy
Magnetic resonance
Magnetism
Magnetization
Mathematical analysis
Physics
Physics and Astronomy
Single crystals
Solid State Physics
Spin valves
Valves
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Summary: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.
ISSN:1063-7834
1090-6460
DOI:10.1134/S1063783417080297