Title :
Dynamic permeability of ferromagnetic thin films with stripe domain structure
Author :
Buznikov, Nikita A. ; Rakhmanov, Alexander L. ; Rozanov, Konstantin N.
Author_Institution :
Inst. for Theor. & Appl. Electromagn., Acad. of Sci., Moscow, Russia
fDate :
9/1/2002 12:00:00 AM
Abstract :
The permeability tensor is calculated for a thin magnetic film having stripe domain structure and out-of-plane uniaxial magnetic anisotropy. The domain width is assumed to be large compared to the film thickness, and the damping parameter is taken into account. A relationship between the static permeability and the resonance frequency is found, which leads to a certain limitation of the microwave permeability of such films.
Keywords :
damping; ferromagnetic materials; ferromagnetic resonance; magnetic anisotropy; magnetic domains; magnetic permeability; magnetic thin films; Landau-Lifshitz-Gilbert equation; damping parameter; dynamic permeability tensor; ferromagnetic resonance; ferromagnetic thin films; free energy density; high-frequency response; microwave permeability; oblique anisotropy axis angle; out-of-plane uniaxial magnetic anisotropy; resonance frequency; static permeability; stripe domain structure; wide domains; Anisotropic magnetoresistance; Damping; Equations; Magnetic films; Magnetic resonance; Microwave devices; Permeability; Resonant frequency; Tensile stress; Transistors;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2002.802488
