Regensburg 2019 – scientific programme
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MA: Fachverband Magnetismus
MA 34: Magnetic textures: Transport and dynamics II
MA 34.9: Talk
Wednesday, April 3, 2019, 17:30–17:45, H37
Magnetic behaviour investigation using simulations, conventional and space-time-resolved x-ray detected FMR — •Santa Pile1, Taddäus Schaffers1, Thomas Feggeler2, Ralf Meckenstock2, Detlef Spoddig2, Katharina Ollefs2, Verena Ney1, Hendrik Ohldag3, Rysard Narkowicz4, Kilian Lenz4, Jürgen Lindner4, Michael Farle2, Heiko Wende2, and Andreas Ney1 — 1Johannes Kepler University Linz, 4040 Linz, Austria — 2University of Duisburg-Essen, 47057 Duisburg, Germany — 3SSRL, SLAC National Accelerator Laboratory, Menlo Park, CA — 4Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstrasse 400, 01328 Dresden, Germany
STXM, XMCD spectroscopy and FMR were combined using a synchronization scheme between the x-ray pulses of the synchrotron and the microwave excitation (STXM-FMR). This STXM-FMR setup enables the visualization of the high frequency magnetization dynamics in the GHz regime with a spatial resolution of 35 nm and a time resolution of 17.4 ps [1]. Lithographically grown combinations of magnetic micro-stripes 5x1x0.03 *m3 were investigated. The samples were precharacterised using conventional FMR [2] and micro magnetic simulations. For STXM-FMR measurements a static magnetic field was applied in the plane of the stripes. As a result several uniform and transitional spin-wave FMR modes were visualised and agree with the simulations.
[1] S. Bonetti, et. al., Rev. Sci. Instrum. 86, 093703 (2015)
[2] R. Narkowicz, et. al., Reson.175, 275 (2005)