Berlin 2024 – scientific programme
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MA: Fachverband Magnetismus
MA 46: Poster II
MA 46.70: Poster
Thursday, March 21, 2024, 15:00–18:00, Poster C
An iterative approach for the coupling of surface acoustic waves to micromagnetics — •Michael Karl Steinbauer1, Peter Flauger1, Bernhard Emhofer1, Matthias Küß2, Stephan Maximilian Glamsch2, Matthias Volz3, Hubert Krenner3, Manfred Albrecht2, and Claas Abert1 — 1University of Vienna — 2University of Augsburg — 3University of Münster
In recent years, the coupling of magnetic and phononic systems has emerged as a rapidly developing field of study. As these interactions usually happen with a resonance frequency in the GHz regime, it has a variety of possible industrial applications [1].
In many experimental publications, a macro-spin model has been used to simulate the influence of surface acoustic waves (SAWs) onto the magnetic system. [2]. However, this approach is not capable of accurately predicting the magnetization dynamics in systems with spatially varying magnetization patterns such as magnetic domains.
In this work, we present a micromagnetic model, which is able to simulate these interactions using an extension of the magnum.np python library [3]. Additionally, we introduce an iterative algorithm to predict the decay of the SAW amplitude as it travels along a magnetic structure.
[1] P. Delsing et al., J. Phys. D: Appl. Phys. 52, 353001 (2019).
[2] M. Küß et al., Phys. Rev. Appl. 15, 034046 (2021).
[3] F. Bruckner et al., Sci. Rep. 13, 12054 (2023).
Keywords: Surface Acoustic Wave; Spin Wave; Magnetostriction; Computational Micromagnetics