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Dresden 2009 – scientific programme

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MA: Fachverband Magnetismus

MA 40: Poster II: Bio- and Molecular Magnetism (1-9); Magnetic Coupling Phenomena/Exchange Bias (10-15); Magnetic Particlicles and Clusters (16-29); Micro and Nanostructured Magnetic Materials (30-51); Multiferroics (52-64); Spin Injection in Heterostructures (65-67); Spin-Dyn./Spin-Torque (68-93); Spindependent Transport (94-108)

MA 40.11: Poster

Friday, March 27, 2009, 11:00–14:00, P1A

Modification of the magnetostatic coupling in NiFe/Au/Co/Au multilayers by He-ion bombardment through a nanosphere mask — •Oliver Buhl1, Dieter Engel1, Tanja Weis1, Arno Ehresmann1, W. Glapka2, Piotr Kuswik2, Maciej Urbaniak2, M. Blaszczyk2, Bogdan Szymanski2, Feliks Stobiecki2, Iosif Sveklo3, Andrzej Maziewski3, and K. Joszwiak41Department of Physics and Center for Interdisciplinary Nanostructure Science and Technology (CINSaT), University of Kassel, Heinrich-Plett-Str. 40, 34132 Kassel, Germany — 2Institute of Physics, Polish Academy of Sciences, Poznań, Poland — 3Faculty of Physics, University of Białystok, Poland — 4Poznań University of Technology, Institute of Materials Science, Poznań, Poland

He-ion bombardment through a nanosphere mask enables locally a defined modification of the magnetostatic coupling between the NiFe and the Co layers. A single layer of polystyrene nanospheres arranged in a regular hexagonal lattice on top of the layer system can be used as a lithography mask in combination with keV-He-ion bombardment, resulting in local anisotropy reductions around the spheres. This could be visualized by a regular artificially created domain structure with hexagonal symmetry, observed when a perpendicular-to-plane magnetic field of a certain value has been applied [1]. First results of VSM and MFM measurements will be presented.

[1] W. Glapka, P. Kuświk, I. Sveklo, M. Urbaniak, K. Jóźwiak, T. Weis, D. Engel, A. Ehresmann, M. Błaszczyk, B. Szymański, A. Maziewski, F. Stobiecki, Acta. Phys. Pol., (2008) at press

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