|About this Abstract
||2020 TMS Annual Meeting & Exhibition
||Characterization of Minerals, Metals and Materials
||Structural and Magnetic Characterization of Magnetic Nanostructures in C2V Thin Films Exhibiting the Anisotropic Dzyaloshinskii-Moriya Interaction
||Michael Dornu Kitcher, Tim Mewes, Claudia Mewes, Marc De Graef, Vincent Sokalski
|On-Site Speaker (Planned)
||Michael Dornu Kitcher
2D C2V magnetic systems exhibit both Rashba and Dresselhaus forms of the Dzyaloshinskii-Moriya interaction (DMI). Together with the unit cell’s asymmetry, they define the DM vector. The DMI in such systems is thus anisotropic and hybridized, potentially stabilizing a broad range of magnetic nanostructures. This work presents a Si/Ag/Pt/Co/Ni(110) multilayer thin film, as informed by experimental and computational studies, which we propose as a tunable [anti]skyrmion host. Semi-analytical modelling of bubble domains in thin-layered Co/Pt(110)–with varying DM vectors–supports stable Bloch-Néel and/or elliptical skyrmions and antiskyrmions. Using alternating gradient magnetometry and Fresnel mode Lorentz transmission electron microscopy, cross-tie walls are observed in single-layer films exhibiting in-plane uniaxial anisotropy. Furthermore, we discuss the structure of films with perpendicular anisotropy and micromagnetic simulations of the relevant nanostructures, focusing on their stability. X-ray and selected area electron diffraction measurements reveal predominantly hexagonal closed-packed Co(10.0) layers with stacking faults and a secondary face-centered cubic phase.