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MA: Fachverband Magnetismus
MA 57: Posters Magnetism II
MA 57.16: Poster
Donnerstag, 19. März 2020, 15:00–18:00, P3
Tailoring of exchange bias in magnetic thin films via electrochemical transformation of the ferromagnetic layer — •Rico Huhnstock1, Jonas Zehner2, Steffen Oswald2, Ivan Soldatov2, Arno Ehresmann1, Kornelius Nielsch2, Dennis Holzinger1, and Karin Leistner2 — 1Institute of Physics and Center for Interdisciplinary Nanostructure Science and Technology (CINSaT), University of Kassel, Heinrich-Plett-Str. 40, D-34132 Kassel — 2Leibniz Institute for Solid State and Materials Research Dresden, IFW Dresden, Helmholtzstr. 20, D-01069 Dresden
In recent research targeted modification of the interface related Exchange Bias (EB) effect in magnetic thin film systems is considered to be a crucial factor in designing artificial magnetic stray field landscapes which can be employed in e.g. biomedical point-of-care diagnostics. In this regard, the challenge of tuning the EB in a reversible and non-volatile manner opens up new opportunities with the application of magnetoionic approaches potentially playing a key role in overcoming present obstacles. Hence, in this work we demonstrate an electrochemical routine for the electric control of EB by a Redox transformation of the ferromagnetic layer in a Fe/IrMn based thin film system [1]. The influence of several experimental parameters on the here investigated tailoring of EB will be discussed alongside a route towards reversible control of EB. To conclude, an outlook on structuring EB systems magnetically with the presented technique will be given.
[1] Zehner et al. (2019), Adv. Electron. Mater., 5(6):1900296.