Modeling ultrafast all-optical switching in synthetic ferrimagnets
2017-06-28, Gerlach, Stefan, Oroszlany, Laszlo, Hinzke, Denise, Sievering, Steffen, Wienholdt, Sönke, Szunyogh, Laszlo, Nowak, Ulrich
Based on numerical simulations, we demonstrate thermally induced magnetic switching in synthetic ferrimagnets composed of multilayers of rare-earth and transition metals. Our findings show that deterministic magnetization reversal occurs above a certain threshold temperature if the ratio of transition-metal atoms to rare-earth atoms is sufficiently large. Surprisingly, the total thickness of the multilayer system has little effect on the occurrence of switching. We further provide a simple argument to explain the temperature dependence of the reversal process.
All-optical magnetization reversal by circularly-polarized laser pulses : Experiment and multiscale modeling
2012, Vahaplar, Kadir, Kalashnikova, Alexandra, Kimel, Alexey, Gerlach, Stefan, Hinzke, Denise, Nowak, Ulrich, Chantrell, Roy, Tsukamoto, Arata, Itoh, A., Kirilyuk, Andrei, Rasing, Theo
We present results of detailed experimental and theoretical studies of all-optical magnetization reversal by single circularly-polarized laser pulses in ferrimagnetic rare earth—transition metal (RE–TM) alloys GdxFe90−xCo10 (20%