Dresden 2020 – scientific programme
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MA: Fachverband Magnetismus
MA 42: Posters Magnetism I
MA 42.31: Poster
Wednesday, March 18, 2020, 15:00–18:00, P3
Broadband Ferromagnetic Resonance on sputtered YIG and Permalloy thin films — •Luise Siegl, Richard Schlitz, and Sebastian T. B. Goennenwein — Institut für Festkörper- und Materialphysik, Technische Universität Dresden and Würzburg-Dresden Cluster of Excellence ct.qmat, 01062 Dresden, Germany
Broadband ferromagnetic resonance (bbFMR) is a powerful tool to characterize the magnetic properties of magnetic materials. We have assembled a setup and a data evaluation protocol for broadband ferromagnetic resonance measurements for frequencies up to 50GHz. To characterize the setup performance, we measure the magnetic resonance response and the (Gilbert) magnetization damping of thin Y3Fe5O12 (YIG) and Ni80Fe20 (Permalloy) films. We will systematically discuss the corresponding data, and furthermore address our strategy to extract the bbFMR signal from the ’non-magnetic’ background. To this end, we take advantage of a background substraction approach put forward recently [1]. Using this approach we find a Gilbert damping of α = 4.16 · 10−4 in Y3Fe5O12 thin films.
We acknowledge funding by the Deutsche Forschungsgemeinschaft (DFG) via SFB1143/C08.
[1] Hannes Maier-Flaig et al., Review of Scientific Instruments 89, 076101 (2018)