Dresden 2011 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 63: Poster II (Surface Magnetism/ Magnetic Imaging/ Topological Insulators/ Spin Structures and Magnetic Phase Transitions/ Graphene/ Magnetic Thin Films/ Magnetic Semiconductors/ Magnetic Half-metals and Oxides/ Spin-dependent Transport/ Spin Excitations and Spin Torque/ Spin Injection and Spin Currents in Heterostructures/ Spintronics/ Magnetic Storage and Applications)
MA 63.10: Poster
Freitag, 18. März 2011, 11:00–14:00, P2
The application of a monopole-like probe for local magnetization measurements by means of Magnetic Force Microscopy — •Silvia Vock1, Franziska Wolny1, Thomas Mühl1, Rainer Kaltofen1, Ludwig Schultz1, Bernd Büchner1, Christoph Hassel2, Jürgen Lindner2, and Volker Neu1 — 1IFW Dresden, P.O. Box 270116, D-01171 Dresden, Germany — 2Physik, Universität Duisburg-Essen, 47048 Duisburg, Germany
A local magnetization measurement was performed with a Magnetic Force Microscope (MFM) to determine magnetization in domains of an exchange coupled [Co/Pt]/Co/Ru multilayer with predominant perpendicular anisotropy. The basic requirement for quantitative evaluation of MFM data is the calibration of the used probes. For this purpose conventional and iron filled carbon nanotubes (Fe-CNT) were calibrated within the point probe approximations. The results show a monopole-like behavior for the Fe-CNT tips while the parameters of the conventional tip depend strongly on the calibration structure. Therefore the Fe-CNT tip was chosen for the local magnetization measurement. As a result we determined an additional in-plane magnetization component of the multilayer, which is explained by estimating the effective permeability of the sample within the µ*-method.