Berlin 2008 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 18: Poster I : Bio Magn. (1-2); Mag.Imgaging (3-9); Magn. Semiconductors (10-16); Half Metals & Oxides (17-20); Coupl.Phenomena (21-27); Magn. Mat. (28-41); Micro & Nanostr. Magn. Materials (42-61); Micro Magn. (62-64); Surface Magnetism (65-70); Transport Phenomena (71-85)

MA 18.21: Poster

Dienstag, 26. Februar 2008, 15:15–18:30, Poster E

Soft x-ray resonant magnetic scattering from magnetic multilayers showing a field induced transition from weak to strong ferromagnetic coupling — •Daniel Lengemann¹, Tanja Weis¹, Dieter Engel¹, Arno Ehresmann¹, Feliks Stobiecki², Maciej Urbaniak², Bogdan Szymanski², Janusz Dubowik², Piotr Kuswik², I. Sevklo³, and Andrzej Maziewski³ — ¹Department of Physics and Center for Interdisciplinary Nanostructure Science and Technology (CINSaT), University of Kassel, Heinrich-Plett-Str.40, D-34132 Kassel — ²Institute of Molecular Physics, Polish Academy of Sciences, ul. Smoluchowskiego 17, 60-179 Poznan, Poland — ³Laboratory of Magnetism, Institute of Experimental Physics, University of Bialystok, ul. Lipowa 41, 15-950 Bialystok, Poland

As for sputter deposited multilayers (Ni₈₀Fe₂₀/Au/Co/Au)₁₀ with alternating out-of-plane (Co) and in-plane (NiFe) magnetization anisotropy and negligible exchange coupling we found a stripe domain structure in remanence due to a specific magnetostatic coupling.

We present first results of several complementary studies, e.g. element specific soft x-ray resonant magnetic scattering (SXRMS) hysteresis measurements, which indicate, that the reversal of the NiFe magnetization is strongly affected by magnetostatic coupling due to domain stray fields. We will discuss the behaviour of this magnetostatic coupling in dependence of the Co thickness in these multilayers.