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MA: Fachverband Magnetismus

MA 18: Magnetic Imaging and Sensors I

MA 18.1: Vortrag

Dienstag, 19. März 2024, 09:30–09:45, EB 301

Curvature-induced magnetic field generation in 3D nanostructures — •Sandra Ruiz-Gomez¹, Pamela Morales-Fernandez¹, Aurelio Hierro², Amalio Fernandez-Pacheco³, and Claire Donnelly¹ — ¹Max Planck Institute for Chemical Physics of Solids, 01187, Dresden, Germany — ²Depto. Física, Universidad de Oviedo, 33007 Oviedo, Spain — ³Institute of Applied Physics, TU Wien, 1040 Vienna, Austria

Exploring three-dimensional nanomagnetic systems with unconventional spin textures opens the door to explore new magnetic phenomena. The impact of curvature on magnetic domain wall dynamics holds promise for new physics and functionalities. However, harnessing these effects requires an understanding of the fundamental properties and behaviour.

In the past few years, insight into the magnetisation configuration of three dimensional magnetic nanostructures has been achieved through developments in nanoscale magnetic tomography. However, many of these approaches primarily focus on large-scale facility of transmission electron microscopy-based methods, which are not always easily accessible. In our study, we demonstrate the feasibility of utilizing a magnetic force microscope (MFM) a standard lab-based technique, to gain insight into the magnetic behaviour of complex curved 3D nanostructures. In this way, not only are we able to identify and track the presence of magnetic textures such as domain walls but, by harnessing our sensitivity to the magnetic field, we map the generation of magnetic stray field due to local curvature-gradients in our nanostructures.

Keywords: Nanomagnetism; Curvilinear magnetism; Magnetic Force Microscopy