Berlin 2024 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 13: Micro- and Nanostructured Magnetic Materials
MA 13.8: Vortrag
Montag, 18. März 2024, 16:45–17:00, EB 407
Single-crystalline YIG nanoflakes with uniaxial in-plane anisotropy and various crystallographic orientations — •Roman Hartmann1, Seema Seema1, Ivan Soldatov2, Michaela Lammel1, Daphné Lignon1, Xianyue Ai1, Gillian Kiliani1, Rudolf Schäfer2,3, Andreas Erb4, Rudolf Gross4,5, Johannes Boneberg1, Martina Müller1, Sebastian Gönnenwein1, Elke Scheer1, and Angelo Di Bernardo1,6 — 1FB Physik, Universität Konstanz, Konstanz, Germany — 2Institute for Emerging Electronic Technologies, IFW Dresden, Dresden, Germany — 3Institut für Werkstoffwissenschaft, TU Dresden, Dresden, Germany — 4Walther-Meißner-Institut, Garching, Germany — 5School of Natural Sciences, TU München, Garching, Germany — 6Dipartimento di Fisica, Università di Salerno, Fisciano, Italy
Yittrium iron garnet (YIG) is being heavily investigated for application in spintronic devices. However, for device integration thin-film YIG is problematic due to its low in-plane magnetic anisotropy (IMA), its large lattice parameter and limited accessibility of crystallographic orientations. To overcome this caveat, we have developed a method to fabricate single-crystal nanoflakes from bulk YIG crystals [1]. These nanoflakes are available in multiple crystallographic orientations with respect to the surface and show a strong uniaxial IMA due to their shape. They are weakly bound to the substrate and can be picked up using a dry transfer technique to stack them with other single-crystal materials into heterostructures or onto electrodes and waveguides.
[1] R. Hartmann et al. Preprint at arXiv:2309.12477 (2023).
Keywords: Yttrium iron garnet Y3Fe5O12 YIG; uniaxial in-plane magnetic (shape) anisotropy; YIG-based magnonics; nanoflakes; exfoliation, dry transfer heterostructures