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MA: Fachverband Magnetismus

MA 17: Poster Session I

MA 17.8: Poster

Tuesday, March 8, 2016, 09:30–12:30, Poster B1

Magnetic force microcopy in the light of the pseudo-pole model — •Adrian Schillik¹, Matthias Stocker¹, Berndt Koslowski¹, Riedmüller Riedmüller², Runbang Shao², and Ulrich Herr² — ¹Institut für Festkörperphysik, Universität Ulm, D-89081 Ulm — ²Institut für Mikro- und Nanomaterialien, Universität Ulm, D-89081 Ulm

Magnetic force microscopy (MFM) is a powerful and simple tool to analyze magnetic materials and structures down to the nano-meter scale. Though in use since almost 3 decades MFM suffers from a significant handicap: it is difficult to obtain quantitative results. This could be overcome by the recently proposed pseudo-pole model [1] assuming a cone which is covered homogeneously with dipoles pointing to the tip of the cones. The magnetic tip is then characterized by a single parameter and the field distribution is given by a simple analytic expression in the half-space in front of the tip. We tie in to the pseudo-pole model by verifying its general applicability and trying to uncover limitations. Here we report on the status of the resumed project. [1] Häberle, Thomas, et al. "Towards quantitative magnetic force microscopy: theory and experiment." New Journal of Physics 14.4 (2012): 043044.