Regensburg 2025 – scientific programme
Parts | Days | Selection | Search | Updates | Downloads | Help
MA: Fachverband Magnetismus
MA 41: Poster III
MA 41.19: Poster
Thursday, March 20, 2025, 15:00–17:30, P3
Observing static and dynamic magnetic textures with nanoscale resolution using NV magnetometry — •Ephraim Spindler1, Philipp Schwenke1, Duc Tran2, Vitaliy Vasyuchka1, Mathias Kläui2, and Mathias Weiler1 — 1Fachbereich Physik and Landesforschungszentrum OPTIMAS, Rheinland-Pfälzische Technische Universität Kaiserslautern-Landau, 67663 Kaiserslautern, Germany — 2Institut für Physik, Johannes Gutenberg-Universität Mainz, Mainz, Germany
Magnetization and stray field imaging is an essential tool for the characterisation of various magnetic materials and phenomena. Techniques such as Kerr microscopy, magnetic force microscopy or Lorentz transmission electron microscopy are well established and ideal for certain applications. However, their sensitivity, spatial resolution or invasiveness make them unsuitable for other applications. Scanning nitrogen vacancy (NV) magnetometry offers a solution with an excellent combination of high sensitivity and spatial resolution, without distorting the magnetic system of interest. The quantitative nature of the measurement principle allows the determination of the magnetic stray field at the sample surface, allowing the visualisation of magnetic textures even in materials with a very low saturation magnetization, such as canted antiferromagnets like hematite at room temperature. We employ NV magnetometry to study static magnetic textures in bulk hematite samples, and metallic multilayer stacks with perpendicular magnetic anisotropy. An outlook on NV center based spin wave spectroscopy is given.
Keywords: Nitrogen-vacancy center; NV center; Magnetometry