SKM 2021 – scientific programme
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MA: Fachverband Magnetismus
MA 11: Posters Magnetism III
MA 11.12: Poster
Wednesday, September 29, 2021, 13:30–16:30, P
Integration and characterization of micron-sized YIG structures with very low Gilbert damping on arbitrary substrates — •Philip Trempler1, Rouven Dreyer1, Philipp Geyer1, Georg Woltersdorf1, and Georg Schmidt1,2 — 1Institut für Physik, Martin-Luther Universität Halle-Wittenberg, 06099 Halle (Saale), Germany — 2Interdisziplinäres Zentrum für Materialwissenschaften, Martin-Luther Universität Halle-Wittenberg 06099 Halle (Saale), Germany
We present a process that allows the transfer of monocrystalline yttrium-iron-garnet microstructures onto virtually any kind of substrate. The process is based on a recently developed method that allows the fabrication of freestanding monocrystalline YIG bridges on gadolinium-gallium-garnet. Here, the bridges' spans are detached from the substrate by a dry etching process and immersed in a watery solution. Using drop-casting, the immersed YIG platelets can be transferred onto the substrate of choice, where the structures finally can be reattached and, thus, be integrated into complex devices or experimental geometries. Using time-resolved scanning Kerr microscopy and inductively measured ferromagnetic resonance, we find a ferromagnetic resonance linewidth of 195 μT at room temperature and we were even be able to inductively measure magnon spectra on a single micrometer-sized YIG platelet at a temperature of 5 K. In the future, this approach will allow for types of spin dynamics experiments until now unthinkable.