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MA: Fachverband Magnetismus

MA 52: Poster II

MA 52.11: Poster

Thursday, March 15, 2018, 15:00–18:00, Poster C

Ferromagnetic Resonance measurements on ultrathin Yttrium-Iron-Garnet grown by LPE — •Ronny Thomas^1,2, Julia Osten¹, Tobias Schneider^1,2, Oleksii Surzhenko³, Olav Hellwig^1,2, Jürgen Lindner¹, Kilian Lenz¹, and Carsten Dubs³ — ¹Helmholtz-Zentrum Dresden-Rossendorf, Institute of Ion Beam Physic and Materials Research, Bautzner Landstraße 400, 01328 Dresden — ²Technische Universität Chemnitz, Straße der Nationen 62, 09111 Chemnitz — ³INNOVENT e.V. Technologieentwicklung, Prüssingstraße 27B, 07745 Jena

Yttrium-Iron-Garnet (YIG) is known to have one of the lowest Gilbert-damping parameter (α ∼ 10⁻⁵) of all magnetic materials, making it interesting for spintronics and magnonics. One of the most promising application is to use spin-waves for data processing, faced with the problem of fabricating ultrathin YIG-films with the same magnetic properties as their bulk analogue.

Two different YIG-series, each with different thicknesses in the range of 10-80 nm were grown on (111) oriented GGG substrates by liquid phase epitaxy in lead oxide-boron oxide based high-temperature solutions. Using VNA-FMR we determine the anisotropy and damping parameters performing frequency-dependent measurements over a range of 1-40 GHz as well as angle-dependent measurements.