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MA: Fachverband Magnetismus
MA 28: Thin Films: Magnetic Anisotropy
MA 28.6: Vortrag
Mittwoch, 20. März 2024, 16:15–16:30, EB 107
Understanding the collective out-of-plane magnetization reversal in tilted stripe domain systems via a single point of irreversibility — •Peter Heinig1,2, Ruslan Salikhov1, Fabian Samad1,2, Lorenzo Fallarino1,3, Gauravkumar Patel1, Attila Kákay1, Nikolai S. Kiselev4, and Olav Hellwig1,2 — 1Helmholtz-Zentrum Dresden-Rossendorf — 2Chemnitz University of Technology — 3CIC energiGUNE — 4Forschungszentrum Jülich
Perpendicular anisotropy thin film systems are well known for their periodic magnetic stripe domain structures. In this study, we focus on investigating the behavior of [Co(3.0 nm)/Pt(0.6 nm)]X multilayers within the transitional regime from preferred in-plane (IP) to out-of-plane (OOP) magnetization orientation, particularly, we examine the sample with X=11 repetitions, which exhibits a remanent state characterized by a significant presence of both OOP and IP magnetization components, here referred to as the "tilted" stripe domain state*. Using vibrating sample magnetometry, magnetic force microscopy and micromagnetic simulations we investigate this specific sample and find an unusual OOP field reversal behavior via a remanent parallel stripe domain state and a single point of irreversibility. While the reversal via distinct points of irreversibility is qualitatively similar to that of a nano-sized Stoner Wohlfarth particle or a vortex reversal in a micron-sized IP magnetized disk, our system is macroscopic. Finally, we show that this characteristic behavior is a rather general feature of transitional IP to OOP systems.
*[L. Fallarino et al., Phys. Rev. B 99, 024431 (2019)]
Keywords: tilted magnetization; single point of irreversibility; Co/Pt multilayer