SKM 2021 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 3: Posters Magnetism I
MA 3.17: Poster
Montag, 27. September 2021, 13:30–16:30, P
Topographic and magnetic characterization of periodically curved organic/metallic hybrid thin film systems — •Christian Janzen1, Sekvan Bagatur2, Maximilian Merkel1, Meike Reginka1, Michael Vogel1, Thomas Fuhrmann-Lieker2, and Arno Ehresmann1 — 1Institute of Physics and Center for Interdisciplinary Nanostrcuture Science and Technology (CINSaT), University of Kassel, Heinrich-Plett-Str. 40, D-34132 Kassel — 2Institute of Chemistry and CINSaT, University of Kassel, Heinrich-Plett-Str. 40, D-34132 Kassel
In this work, a low-molecular azo-glass material (AZOPD [1]) is structured by a two-beam-interference-patterning process. Thereby, a periodically curved topography with a structure height and a structure wavelength at the nanoscale is obtained, whereby the latter is constant over the sample area. The periodically curved organic layer is used as a topographic template for the deposition of a ferromagnetic thin film. Non-contact atomic force microscopy measurements were conducted in order to investigate the alteration of the topography after sputter deposition. By spatially resolved magneto-optical Kerr magnetometry, a direct correlation between the local topography of the heterostructure and its coercive field is observed. The occurence of an uniaxial magnetic anisotropy, originating from the periodically curved topography, is examined by varying the ferromagnetic layer thickness. Finally, the influence of the sample topography on the alignment of magnetic domains is investigated via Kerr-microscopy.
[1] Fuhrmann et al. Chem. Mater. 1999, 11, 8, 2226-2232