Dresden 2026 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 39: Poster Magnetism II
MA 39.10: Poster
Mittwoch, 11. März 2026, 18:00–21:00, P2
Interferometric measurements of Yittrium-Iron-Garnet cantilevers — Sumiya Saleem1, •Richard Boucher1, Seth Kaufman1, and Georg Schmidt1,2 — 1Martin-Luther-Universität Halle-Wittenberg Insitut für Physik, Halle, Germany. — 2Interdisziplinäres Zentrum für Materialwissenschaften, Martin-Luther-Universität Halle-Wittenberg, Halle, Germany.
Interferometric effects provide a sensitive detection of displacement, including those related to the resonance oscillations of cantilevers. We fabricate Yttrium-Iron-Garnet (YIG) cantilevers using a room-temperature pulsed laser deposition of amorphous YIG, lift-off method, followed by an anneal in oxygen yielding single-crystal structures [1]. By combining these in an interferometer built on the basis of the work of Pernpeitner [2] and Jörg [3] we have looked at the resonance frequency dependence on YIG cantilever length in the micrometre range, which will be compared with the work of Seo [4], various theoretical models, and COMSOL simulations, showing excellent agreement with theoretical results. We further show that these cantilevers can be driven to a non-linear regime, indicated via a characteristic Duffing non-linearity at high driving powers.
[1] P. Trempler et al, APL, 117, 232401 (2019) [2] M. Pernpeitner PhD thesis, TUM. [3] P. Jörg Bachelor's thesis, TUM [4] Y-J. Seo, APL., 110, 132409 (2017)
Keywords: YIG; microstructures; cantilevers; interferometry