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Spatially Resolved Dynamic Eigenmode Spectrum of Co Rings

Neudecker, Ingo ; Kläui, M. ; Perzlmaier, Korbinian ; Backes, D. ; Heyderman, L. ; Vaz, C. ; Bland, J. ; Rüdiger, U. ; Back, Christian
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Date of publication of this fulltext: 05 Aug 2009 13:34


Abstract

The spatially resolved eigenmode spectrum of micrometer-sized Co ring elements has been determined by means of combined vector network analyzer ferromagnetic resonance and time resolved magneto-optic Kerr effect measurements. Up to 5 resonant eigenmodes were observed in the frequency range from 45 MHz to 20 GHz as a function of an external magnetic bias field. A well-defined mode structure ...

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