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

Volume

38

Issue

5

fYear

2002

fDate

9/1/2002 12:00:00 AM

Firstpage

3123

Lastpage

3125

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;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2002.802488

Filename

1042471