https://doi.org/10.1140/epjb/e2004-00252-4
Microscopic theory of dipole-exchange spin waves in magnetic multilayers
Departamento de Física, Universidade Federal do
Ceará, Campus do Pici, caixa postal 6030,
Fortaleza, Ceará, 60455-760, Brazil
Corresponding author: a pereira@fisica.ufc.br
Received:
17
March
2004
Revised:
26
May
2004
Published online:
12
August
2004
A microscopic model is employed to calculate the spectrum of dipole-exchange spin waves in multilayers in which thin ferromagnetic films are separated by non-magnetic spacers. Two configurations are considered: in one the films have magnetizations parallel to each other, in the other the magnetizations are antiparallel. The calculations extend a previous microscopic formalism that allows the calculation of the dipole-exchange spin wave spectrum in thin films. The results show the splitting of the frequency bands and the mode mixing caused by the dipolar interaction between the films as a function of spacer thickness.
PACS: 75.30.Ds – Spin waves / 75.40.Gb – Dynamic properties (dynamic susceptibility, spin waves, spin diffusion, dynamic scaling, etc.) / 75.70.-i – Magnetic properties of thin films, surfaces, and interfaces
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2004
