Interlayer Exchange Coupling for Ferromagnets through Spacers

We consider the interlayer exchange coupling between two ferromagnetic layers mediated by a nonmagnetic spacer layer. We adopt the theoretical model which is based on a macroscopic description using the Landau-Lifshitz equations and the Hoffmann boundary conditions characterizing the interlayer exch...

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Bibliographic Details
Published in:SIAM journal on applied mathematics 2004-01, Vol.64 (3), p.1077-1097
Main Authors: Hamdache, Kamel, Tilioua, Mouhcine
Format: Article
Language:English
Subjects:
Anisotropy
Boundary conditions
Coefficients
Integration by parts
Magnetic fields
Magnetization
Magnetostatics
Mathematical vectors
Thin films
Variable coefficients
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Summary:We consider the interlayer exchange coupling between two ferromagnetic layers mediated by a nonmagnetic spacer layer. We adopt the theoretical model which is based on a macroscopic description using the Landau-Lifshitz equations and the Hoffmann boundary conditions characterizing the interlayer exchange coupling between the interfaces of the ferromagnetic films. An asymptotic study of such a layered system for either small or large spacer thicknesses is presented. The asymptotic problem and the boundary conditions at interfaces both for the magnetization and the magnetic field are characterized.
ISSN:0036-1399
1095-712X
DOI:10.1137/s0036139901398916