Spatially Resolved Dynamic Eigenmode Spectrum of Co Rings

DOI to cite this document:: 10.5283/epub.1926

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

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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 was ...