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DF: Fachverband Dielektrische Festkörper

DF 22: Poster II

DF 22.23: Poster

Freitag, 15. März 2013, 10:30–13:30, Poster D

Pattern formation and transformation in a magnetic model system — •Matthias Kronseder, Martin Buchner, and Christian Back — Universität Regensburg, Deutschland

Magnetic phase transitions in ultra thin films have been subject to intensive studies in the last decade. Particular interest has been dedicated to the spin reorientation transition (SRT) found in some ultra thin magnetic films with a strong perpendicular anisotropy. In addition, the magnetic domain pattern exhibits a distinct evolution, i.e. a transformation between individual phases of those patterns, while approaching the SRT. Here, we concentrate on the dynamics near phase transitions. We use a laboratory based imaging technique with high spatial resolution, which is threshold photoemission magnetic circular dichroism (TP-MCD) in combination with photoemission electron microscopy (PEEM). The magnetic phase transitions of the system Fe/Ni/Cu(001) has been investigated with respect to its temporal and temperature dependence. Furthermore we investigate its behavior in external magnetic fields.