Regensburg 2010 – scientific programme
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MA: Fachverband Magnetismus
MA 10: Poster I
MA 10.59: Poster
Tuesday, March 23, 2010, 10:45–13:45, Poster A
Interaction of surface acoustic waves with magnetization dynamics — •Rupert Huber1, Mathias Weiler2, Sebastian T.B. Goennenwein2, Sebastian Neusser1, and Dirk Grundler1 — 1Lehrstuhl für Physik funktionaler Schichtsysteme, Technische Universität München, Physik Department, James-Franck-Str. 1, 85747 Garching b. München, Germany — 2Walther-Meissner-Institut, Bayerische Akademie der Wissenschaften, Walther-Meissner-Strasse 8, 85748 Garching b. München, Germany
The authors investigate the transmission of surface acoustic waves (SAWs) in the GHz regime through thin ferromagnetic films (FM) deposited on a LiNbO3 substrate. We use e.g. Co and FeCoV. When applying an in-plane magnetic field H→ under different orientations we find characteristic angular dependencies of the SAW’s amplitude and phase on H→. We discuss our observation in terms of the magnetic field dependent change of elastic properties of the FM/LiNbO3 hybrid systems. The dependencies are investigated in detail by comparing FeCoV and Co. FeCoV is magnetically isotropic, whereas Co shows a pronounced magnetic anisotropy. We find a significant difference for the SAW transmission characteristics. The work has been supported by the German Excellence Cluster "Nanosystems Initiative Munich".
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