Modal spectrum of permalloy disks excited by in-plane magnetic fields

URN to cite this document:: urn:nbn:de:bvb:355-epub-25502
DOI to cite this document:: 10.5283/epub.2550

Neudecker, I. ; Perzlmaier, Korbinian ; Hoffmann, Frank ; Woltersdorf, Georg

; Buess, M. ; Weiss, Dieter

; Back, Christian

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Date of publication of this fulltext: 05 Aug 2009 13:40

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Abstract

The mode spectrum of 4 micron sized ferromagnetic permalloy disks exhibiting a vortex structure in equilibrium is investigated in detail. Normal modes accessible by in-plane field excitations are examined. By means of spatially resolved techniques using Kerr microscopy we recorded the modal structure of the disks at zero bias field. We employed pulsed and continuous wave excitation. As a result ...