SKM 2023 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 17: Thin Films: Magnetic Anisotropy
MA 17.1: Vortrag
Dienstag, 28. März 2023, 09:30–09:45, POT 6
Micromagnetic parameters and longitudinal relaxation in ultrathin asymmetrically sandwiched magnetic films — •Oleksii M. Volkov1, Ivan A. Yastremsky2, Oleksandr V. Pylypovskyi1,3, Florian Kronast4, Claas Abert5, Eduardo Sergio Oliveros Mata1, Pavlo Makushko1, Mohamad-Assaad Mawass4, Volodymyr P. Kravchuk6, Denis D. Sheka2, Boris A. Ivanov7, Jürgen Fassbender1, and Denys Makarov1 — 1Helmholtz-Zentrum-Dresden-Rossendorf, Dresden, Germany — 2Taras Shevchenko National University of Kyiv, Kyiv, Ukraine — 3Kyiv Academic University, Kyiv, Ukraine — 4Helmholtz-Zentrum Berlin für Materialen und Energie, Berlin, Germany — 5University of Vienna, Wien, Austria — 6Karlsruher Institut für Tech, Karlsruhe, Germany — 7Institute of Magnetism, Nation, Kyiv, Ukraine
Ultrathin asymmetric magnetic films are a prominent material science platform, which combines unique magnetic and electronic properties enabling prospective memory and logic spin-orbitronic devices. Here, we present the quantification mechanism to distinguish all static and dynamic micromagnetic parameters of the layer stack based on magnetometry [1] and quasi-static morphology experiments on domain wall equilibrium tilts [2]. The DW damping is found to be about 0.1 [2] and it is demonstrated to arise from a longitudinal relaxation being dominant among transversal mechanisms for ultrathin films [3].
[1] I. A. Yastremsky et al., Phys. Rev. Appl. 12, 064038 (2019).
[2] O. M. Volkov et al., Phys. Rev. Appl. 15, 034038 (2021).
[3] I. A. Yastremsky et al., Phys. Rev. Appl. 17, L061002 (2022).