Regensburg 2013 – scientific programme
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MA: Fachverband Magnetismus
MA 29: Micro- and Nanostructured Magnetic Materials
MA 29.5: Talk
Wednesday, March 13, 2013, 16:00–16:15, H23
Magnetic domain walls in patterned exchange bias domains — •Alexander Gaul1, Alla Albrecht1, Hans Peter Oepen2, Sebastian Hankemeier2, and Arno Ehresmann1 — 1Department of Physics and Center for Interdisciplinary Nanostructure Science and Technology (CINSaT), University of Kassel, Heinrich-Plett-Str. 40, D-34132 Kassel — 2Institute of Applied Physics and Microstructure Advanced Research Center, University of Hamburg, Jungiusstr. 11, D-20355 Hamburg
Arbitrary micro magnetic domain structures are fabricated by ion bombardment induced magnetic patterning (IBMP) [1] of exchange bias layer systems, where the size of magnetic domains together with the value and direction of the anisotropy parameter in adjacent domains can be deliberately set. These domain walls were probed by magnetic force microscopy (MFM) and scanning electron microscopy with polarization analysis (SEMPA) to reveal the detailed magnetic structure of the domain walls. Different structures like cross tie, zig zag and asymmetric domain walls were found depending on the properties of the nearby domains.
[1] Ehresmann, A., Engel, D., Weis, T., Schindler, A., Junk, D., Schmalhorst, J., Höink, V., et al. (2006). Fundamentals for magnetic patterning by ion bombardment of exchange bias layer systems. Phys. Stat. Sol. (B), 243(1), 29-36. doi:10.1002/pssb.200562442