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MA: Fachverband Magnetismus

MA 15: Magnetic Heuslers, Half-metals and Oxides (jointly with TT)

MA 15.9: Vortrag

Montag, 20. März 2017, 17:15–17:30, HSZ 403

High quality Yttrium Iron Garnet thin films by room temperature deposition and annealing in argon atmosphere — •Christoph Hauser¹, Christian Eisenschmidt¹, Hakan Deniz², and Georg Schmidt^1,3 — ¹Institute of Physics, Martin-Luther-Universität Halle-Wittenberg, Germany — ²Max-Planck-Institut für Mikrostrukturphysik, Halle, Germany — ³Interdisziplinäres Zentrum für Materialwissenschaften, Halle, Germany

We have recently [1] shown that depositing Yttrium Iron Garnet by Pulsed Laser Deposition at room temperature and subsequent annealing in an oxygen atmosphere results in fully epitaxial layers. The layers show extremely low damping and very narrow linewidth in Ferromagnetic Resonance, even for thin layers. Here we show that annealing in oxygen is not mandatory. Also annealing in argon results in high quality layers. For a 63 nm YIG layer a linewidth of 2.26 Oe @ 9.6GHz and a damping of 1.61 · 10⁻⁴ is observed in FMR. Structural characterization indicates high crystalline quality and no visible defects. [1] Hauser et al., Sci. Rep. 6, 20827 (2016)