Thermally Assisted All-Optical Helicity Dependent Switching of Ferrimagnetic Amorphous Fe100−x Tb x Thin Films

Alexander Hassdenteufel,Birgit Hebler,Clivia Schubert,A Liebig,M Teich,J W Schmidt,Manfred Helm,Martin Aeschlimann,Manfred Albrecht,Rudolf Bratschitsch

Springer Proceedings in Physics（2015）

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摘要

We observe all-optical switching (AOS) in ferrimagnetic Fe100-xTbx alloy films below, above, and in samples without a magnetic compensation point. AOS is linked to a low remanent magnetization M-R and associated with laser heating up to the Curie temperature. Above M-R = 220 emu/cc AOS is replaced by pure thermal demagnetization.

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