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MA: Fachverband Magnetismus
MA 31: Poster II
MA 31.9: Poster
Mittwoch, 19. März 2025, 17:00–19:30, P1
Collective out-of-plane stripe domain magnetization reversal via a single point of irreversibility — •Peter Heinig1,2, Ruslan Salikhov2, Fabian Samad1,2, Lorenzo Fallarino2,3, Attila Kákay2, Nikolai S. Kiselev4, and Olav Hellwig1,2 — 1Chemnitz University of Technology — 2Helmholtz-Zentrum Dresden-Rossendorf — 3CIC energiGUNE — 4Forschungszentrum Jülich
Periodic stripe domain structures in thin films with perpendicular magnetic anisotropy are well-studied, however, the detailed field reversal of such systems in the transition regime between in-plane (IP) and out-of-plane (OOP) magnetization remains intriguing, with unexpected effects. In particular, the [Co(3.0 nm)/Pt(0.6 nm)]X multilayer system undergoes this transition1. We examine samples with X=10 and X=11 repetitions, which display a remanent state with both significant OOP as well as IP magnetization components, here referred to as the "tilted" stripe domain state1,2. Using vibrating sample magnetometry, magnetic force microscopy, and micromagnetic simulations, we analyze the unusual OOP field reversal behavior, which is characterized by a single point of irreversibility and parallel stripe domains at remanence. While these two characteristics seem at first sight mutually exclusive, we will reveal how they still can evolve simultaneously. In addition to the unusual OOP reversal, we also observe a significant IP angular dependence of the susceptibility around remanence induced by the parallel stripe domain alignment.
1[L. Fallarino et al., Phys. Rev. B 99, 024431 (2019)]
2[P. Heinig et al., Phys. Rev. B 110, 024417 (2024)]
Keywords: tilted magnetization; single point of irreversibility; Co/Pt multilayer; induced anisotropy