Berlin 2015 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 19: POSTER Ia
MA 19.26: Poster
Dienstag, 17. März 2015, 09:30–13:00, Poster A
Exchange Bias Tubes for controlled fuel-free transport of superparamagnetic particles — •Timo Ueltzhöffer1, Robert Streubel2, Dennis Holzinger1, Iris Koch1, Denys Makarov2, Oliver G. Schmidt2, 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 — 2Leibniz Institute for Solid State and Materials Research Dresden, Helmholtzstraße 20, D-01069 Dresden
Magnetically stripe patterned exchange bias tubes were fabricated and studied in respect to their suitability for fuel-free transport of superparamagnetic particles. For that purpose a CoFe/IrMn Exchange Bias (EB) system was fabricated via sputter deposition on a strained Ti-layer. The EB layer system is magnetically patterned with 5 µm parallel stripe domains with their magnetizations oriented head-to-head / tail-to-tail and subsequently rolled up by removal of the underlying sacrificial layer [1]. The resulting tubular system is suitable for being used as a substrate for the directed near surface transport of superparamagnetic particles [2]. In this study we were able to show that the transport system could be rolled up successfully to tubular structures while the magnetic properties are preserved.
[1] E. Bermúdez Urena, Y. Mei, E. Coric, D. Makarov, M. Albrecht and O. G. Schmidt, J. Phys. D: Appl. Phys. 42 (2009) 055001
[2] D. Holzinger, D. Lengemann, F. Göllner, D. Engel and A. Ehresmann, Appl. Phys. Lett. 100, (2012) 153504