Theory for Brillouin light scattering from dipole-exchange surface spin waves in ferromagnetic films

Author

Cottam, M.G. ; Slavin, A.N.

Author_Institution

Centre for Chem. Phys., Western Ontario Univ., London, Ont., Canada

Volume

27

Issue

6

fYear

1991

fDate

11/1/1991 12:00:00 AM

Firstpage

5489

Lastpage

5491

Abstract

A theory is presented for Brillouin light scattering from spin-wave excitations in ferromagnetic films. The approach is based on a tensorial Green-function theory of the dipole-exchange spin wave spectrum in magnetic films. Mixed exchange boundary conditions are used, and the particular case of antisymmetric pinning in perpendicularly magnetized ferromagnetic films is discussed in detail. Explicit analytical expressions for the light-scattering cross sections are obtained in this case of scattering from both surface and bulk spin-wave modes. Applications of the theory to films of Fe and EuO are discussed

Keywords

Brillouin spectra; Green´s function methods; europium compounds; ferromagnetic properties of substances; iron; magnetic thin films; spin waves; Brillouin light scattering; EuO; Fe; antisymmetric pinning; dipole-exchange surface spin waves; exchange boundary conditions; ferromagnetic films; light-scattering cross sections; perpendicularly magnetized; spin-wave excitations; tensorial Green-function theory; Brillouin scattering; Light scattering; Magnetic analysis; Magnetic anisotropy; Magnetic films; Magnetic materials; Magnetostatic waves; Maxwell equations; Perpendicular magnetic anisotropy; Surface waves;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.278880

Filename

278880