Micromagnetic Modelling of the Dynamics of Exchange Springs in Multi-Layer Systems
作者： M. Franchin , J. P. Zimmermann , T. Fischbacher , G. Bordignon , P. A. J. de Groot
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摘要: Exchange springs are formed in multilayers of alternating hard and soft ferromagnetic materials which exchange coupled at their interfaces. These systems rich interesting physical properties, can be tuned by selecting suitable geometries compositions. In this paper, we present a computational study the dynamics tri-layer DyFe2/YFe2/DyFe2 spring system near bending field (the required to twist magnetization YFe2 layer out aligned state). The dynamical reaction small variations applied is studied its oscillatory nature analyzed numerically. behaviors decay times, frequencies, amplitudes reveal enhanced responses
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