Berlin 2005 – wissenschaftliches Programm

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MA: Magnetismus

MA 3: Magnetische Abbildungsverfahren

MA 3.2: Vortrag

Freitag, 4. März 2005, 10:45–11:00, TU H1028

Determination of complex magnetic structures with vector Magnetic Force Microscopy — •Silvia Sasvári, Kirill Khlopkov, Oliver Gutfleisch, Ulrike Wolff, Ludwig Schultz, and Volker Neu — IFW Dresden, P.O. Box 270116, 01171 Dresden, Germany

The quantitative interpretation of Magnetic Force Microscopy (MFM) response of complex magnetization patterns is still difficult since this technique is not a direct measure of the magnetization. Therefore, the use of vector MFM in combination with MFM image simulation is suggested as a way to extract more information out of the MFM data. The vector MFM approach measures different components of the magnetic stray field derivative by magnetizing a hard magnetic tip in different directions. A longitudinal recording media has been measured with vector MFM and both components of the MFM response have been modelled with a commercial magneto static solver in combination with a rigid tip point probe approximation. To test the applicability to more complex magnetization patterns, vector MFM has been performed on an isotropic NdFeB-magnet. With this study the sensitivity of MFM measurements to tilted magnetization directions of the individual NdFeB grains is evaluated.