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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 Ney11Johannes 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)

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