Control of the magnetization dynamics through the Magneto- Elastic coupling effect
Control of the magnetization dynamics through the Magneto- Elastic coupling effect
Finizio, S.; Wintz, S.; Kirk, E.; Suszka-Gorzny, A.; Gilga, S.; Raabe, J.
The magneto-elastic (ME) coupling has recently become of inter- est thanks to its numerous applications, e.g. in the fabrication of magneto-electric multiferroics. This effect has been recently studied quasi-statically on micro- and nanostructured magnetostrictive materials strained using piezoelectric substrates. However, due to limitations in the RF properties of piezoelectric materials, the influence of the ME coupling on the magneto-dynamical processes has not yet been investigated in depth. Here, thanks to a newly-developed approach that allows the in-situ straining of magnetostrictive materials whilst preserving good RF properties of the substrate, we present a first study of the influence of the ME coupling on the gyration dynamics of magnetic vortices in microstructured magnetostrictive elements using time-resolved x-ray magnetic microscopy. In particular, we observe that the application of a strain to the magnetostrictive material leads to a reduction of the gyration eigenfrequency, and to a modification of the orbit of the vortex core, both of which can be controlled by changing the magnitude of the applied strain.
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Poster
DPG Frühjahrstagung der Sektion kondensierte Materie, 19.-24.03.2017, Dresden, Deutschland
Permalink: https://www.hzdr.de/publications/Publ-24424