Regensburg 2022 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 35: Poster 2
MA 35.49: Poster
Donnerstag, 8. September 2022, 16:00–18:00, P4
Effect of laser annealing on the magnetic properties of Co/Pt based multilayers — •Lokesh Rasabathina1, Apoorva Sharma1, Sandra Busse3, Benny Böhm1, Fabian Samad1,2, Georgeta Salvan1, Alexander Horn3, and Olav Hellwig1,2,4 — 1Institute of Physics, Chemnitz University of Technology, 09107 Chemnitz, Germany — 2Institute of Ion Beam Physics and Materials Research, Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstraße 400, 01328 Dresden, Germany — 3Laserinstitut Hochschule Mittweida, Schillerstraße 10, 09648 Mittweida, Germany — 4Center for Materials, Architectures and Integration of Nanomembranes (MAIN), Chemnitz University of Technology, 09107 Chemnitz, Germany
Two modes of laser annealing, namely, Continuous Wave (CW) and Pulsed Wave (PW) mode, are used for modifying the magnetic properties of perpendicular magnetic anisotropy (PMA) multilayers in a controlled manner. For this we compare two types of samples - a PMA (Co/Pt)10 multilayer and an antiferromagnetically interlayer exchange coupled PMA (Co/Pt)4/Co/Ir/(Co/Pt)5 multilayer. Room temperature hysteresis loops using polar MOKE magnetometry are measured for the different laser annealing modes. Thus, a relationship between the applied laser parameters and the magnetic properties is extracted, which provides an opportunity to alter magnetic properties of PMA multilayer systems locally with high spatial resolution on demand.