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MA: Fachverband Magnetismus
MA 19: Spin-Dynamics/Switching I
MA 19.13: Vortrag
Mittwoch, 28. März 2007, 18:15–18:30, H23
Magnetization dynamics of a single cross-tie wall — •Karsten Kuepper1, Daniel Markó1, Matthias Buess2, Jörg Raabe2, Christoph Quitmann2, and Jürgen Fassbender1 — 1Forschungszentrum Dresden-Rossendorf, Institut für Ionenstrahlphysik und Materialforschung, Bautzner Landstr. 128, D-01328 Dresden — 2Swiss Light Source, Paul Scherrer Institut, CH-5232 Villigen, - PSI, Switzerland
We report the imaging of the magnetic excitation spectrum of a single cross-tie wall by means of x-ray magnetic circular dichroism - photoemission electron microscopy (XMCD-PEEM). The permalloy rectangle was excited by a short magnetic in plane pulse with a maximum field value of about 20 Oe. The high temporal and lateral resolution allows a detailed quantitative analysis of the magnetodynamic excitations. We find new eigenmodes in the frequency domain which are characteristic for the vortex-antivortex interaction in a single cross-tie wall. We discuss our experiment along micromagnetic simulations.