Quantitative analysis of magnetic excitations in Landau flux-closure structures using synchrotron-radiation microscopy |
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Authors: | Raabe J Quitmann C Back C H Nolting F Johnson S Buehler C |
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Affiliation: | Paul Scherrer Institut, CH-5232 Villigen, Switzerland. joerg.raabe@psi.ch |
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Abstract: | We have measured the excitation spectrum of six micron magnetic squares using x-ray magnetic circular dichroism. We observe all three excitations expected in a Landau flux-closure pattern. High temporal and spatial resolution allows quantitative analysis of the excitations. A short magnetic in plane pulse excites the magnetic element and we observe precessional motion of the magnetization within the domains as well as a domain wall mode and vortex motion. The vortex moves perpendicular to the excitation field and relaxes without showing a circulating orbit. |
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