Title: Equilibrium configuration of magnetic trilayers
Abstract: We use a simple and realistic theoretical model to investigate the equilibrium configuration of ferromagnetic-nonmagnetic-ferromagnetic trilayer systems. We assume the ferromagnetic films have a crystalline anisotropy and interact via bilinear and biquadratic coupling. We consider the system is always in the configuration that gives the absolute minimum to the energy to construct field-dependent phase diagrams for the case that the external dc field ${(H}_{0})$ is applied parallel to the surface of the films. We show that for a given value of the dc field, the equilibrium configuration has a peculiar dependence on the parameters that describe the anisotropy ${(H}_{a}),$ bilinear ${(H}_{x}),$ and biquadratic ${(H}_{b})$ coupling. We present general results for different values of ${H}_{b}{/H}_{x}$ and ${H}_{a}{/H}_{x}$ and we specialize our numerical calculation to display theoretical results for physical properties of systems that have values of ${H}_{a},$ ${H}_{b},$ and ${H}_{x},$ suitable to fit the experimental parameters of Fe/Cr/Fe magnetic trilayers. We predict interesting behavior of the magnetization with the strength of the dc field when it is not applied parallel to an easy axis.
Publication Year: 1998
Publication Date: 1998-01-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 9
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