Berlin 2024 – scientific programme

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MA: Fachverband Magnetismus

MA 47: Poster III

MA 47.20: Poster

Thursday, March 21, 2024, 15:00–18:00, Poster D

The importance of the angle of incidence in magneto-optical Kerr microscopy investigated at micron-sized pyramidical magnetic thin films — •Bhavadip Rakholiya, Christian Janzen, and Arno Ehresmann — Institute of Physics and Center for Interdisciplinary Nanostructure Science and Technology (CINSaT), University of Kassel, Kassel, Germany

This study investigates the impact of shape anisotropy on the magnetic properties of micron-sized pyramidal magnetic thin films. Utilizing Magneto-Optical Kerr Microscopy (MOKE), we analyze shape-induced modifications in magnetic characteristics. MOKE, based on detecting changes in polarized light reflected from the sample, enables high-resolution examination of magnetic domains and their responses to external stimuli. Specifically, we focus on applying MOKE to study micron-sized pyramidal magnetic thin films, considering challenges related to optical interaction in non-uniform geometries. The spatially dependent angle of incidence introduced by pyramidal structures influences the magneto-optical response. Our findings underscore the significant influence of material shape on magnetic properties and stress the importance of considering light angle changes in MOKE studies of complex shapes, contributing to a deeper understanding of the interplay between shape, optics, and magnetism for enhanced control and application of magnetic materials in various technologies.

Keywords: Kerr Microscopy; Shape Anisotropy; 3D pyramidical magnetic thin film; Two-Photon Polymerization Lithography; Angle of Incidence