SKM 2023 – scientific programme
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MA: Fachverband Magnetismus
MA 40: Poster Magnetism II
MA 40.33: Poster
Thursday, March 30, 2023, 14:00–16:00, P2/EG
Angle dependent FMR studies on YIG films — •Tim Vogel1, David Breitbach1, Carsten Dubs2, Burkard Hillebrands1, and Philipp Pirro1 — 1Fachbereich Physik and Landesforschungszentrum OPTIMAS, RPTU Kaiserslautern-Landau, Germany — 2INNOVENT e.V. Technologieentwicklung, Jena, Germany
Yttrium iron garnet (YIG) is a commonly used material in magnonics due to its low spin-wave damping. Previous ferromagnetic resonance spectroscopy (FMR) studies on (111) grown YIG thin films suggested a deviation from the expected sixfold symmetry of the magnetocrystalline anisotropy for large external fields. For more in-depth investigations, we developed a fully automized setup for angle dependent vector-network-analyzer-FMR studies of in-plane magnetized YIG films. We apply this setup to investigate a (111) grown, d=55nm thick LPE YIG film. Our results confirm the expected sixfold symmetry even for high external field values. Further, we apply the setup to quantify the effect of the present anisotropy field. This study contributes to the understanding of YIG thin films and the impact of magnetocrystalline anisotropy for magnonic applications.
This research is funded by the DFG - Project No. 271741898 and TRR 173-268565370 (B01) and the ERC Grant No. 101042439 'CoSpiN'.