Micromagnetic parameters and longitudinal relaxation in ultrathin asymmetrically sandwiched magnetic films
Micromagnetic parameters and longitudinal relaxation in ultrathin asymmetrically sandwiched magnetic films
Volkov, O.; Yastremsky, I. A.; Pylypovskyi, O.; Kronast, F.; Abert, C.; Oliveros Mata, E. S.; Makushko, P.; Mawass, M.-A.; Kravchuk, V. P.; Sheka, D.; Ivanov, B. A.; Faßbender, J.; Makarov, D.
Abstract
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).
Keywords: Ultrathin asymmetric magnetic film; Domain wall; Spin-otbit torque; Micromagnetics
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Vortrag (Konferenzbeitrag)
86th Annual Conference of the DPG and DPG Spring Meeting, 20.-24.03.2023, Dresden, Germany
Permalink: https://www.hzdr.de/publications/Publ-38021