SKM 2023 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 50: Magnetic Domain Walls (non-skyrmionic)

MA 50.1: Vortrag

Freitag, 31. März 2023, 09:30–09:45, POT 6

Geometrically controlled domain wall dynamics in curved 3D nanostructures — •Sandra Ruiz-Gomez¹, Pamela Morales¹, Claudia Fernandez-Gonzalez¹, Aurelio Rodriguez-Hierro², Michael Foerster³, Miguel Angel Nino³, Ewa Madej⁴, Dorota Wilgocka-Slezak⁴, Anna Mandziak⁴, Amalio Fernandez-Pacheco⁵, and Claire Donnelly¹ — ¹MPI-CPfS, Dresden, Germany — ²Nothnitzer strasse 40 — ³Alba Synchrotron, Barcelona, Spain — ⁴Solaris synchrotron, Krakow, Poland — ⁵INMA, Zaragoza, Spain

Three dimensional nanomagnetic systems, with novel and unconventional spin textures, represent an exciting platform to explore new magnetic phenomena for the development of more efficient, capable and multifunctional technologies. In particular, the 3D geometry is predicted to have a significant influence on the dynamics of magnetic domain walls through the introduction of curvature and torsion, where new physics and functionalities can be realised.

Here, we experimentally explore the influence of 3D geometry on the energetics of domain walls by introducing curvature using focused electron beam induced deposition. We probe the behaviour of DWs within 3D curved systems with soft x-ray magnetic microscopy, that allows us to directly observe the magnetic state and the domain walls, and determine their response to the application of magnetic fields . This insight into the control that can obtained via complex geometries will help pave the way to the next generation of 3D spintronic devices.