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Micromagnetic Dissipation, Dispersion, and Mode Conversion in Thin Permalloy Platelets

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Buess, Matthias ; Haug, Thomas ; Scheinfein, M. ; Back, Christian
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Date of publication of this fulltext: 05 Aug 2009 13:34


Micron-sized ferromagnetic Permalloy disks exhibiting an in-plane ferromagnetic vortex structure are excited by a fast rise time perpendicular magnetic field pulse and their modal structure is analyzed. We find azimuthal and axial modes. By a Fourier filtering technique we can separate and analyze the time dependence of individual modes. Analysis of the experimental data demonstrates that the ...


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