Thermally assisted all-optical helicity dependent magnetic switching in amorphous Fe(100-x)Tb(x) alloy films

All-optical switching (AOS) in ferrimagnetic Fe(100-x)Tb(x) alloys is presented. AOS is witnessed below, above, and in samples without a magnetic compensation point. It is found that AOS is associated with laser heating up to the Curie temperature and intimately linked to a low remanent sample magne...

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Veröffentlicht in:Advanced materials (Weinheim) 2013-06, Vol.25 (22), p.3122-3128
Hauptverfasser: Hassdenteufel, Alexander, Hebler, Birgit, Schubert, Christian, Liebig, Andreas, Teich, Martin, Helm, Manfred, Aeschlimann, Martin, Albrecht, Manfred, Bratschitsch, Rudolf
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Sprache:eng
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Zusammenfassung:All-optical switching (AOS) in ferrimagnetic Fe(100-x)Tb(x) alloys is presented. AOS is witnessed below, above, and in samples without a magnetic compensation point. It is found that AOS is associated with laser heating up to the Curie temperature and intimately linked to a low remanent sample magnetization. Above a threshold magnetization of 220 emu/cc helicity dependent AOS is replaced by pure thermal demagnetization.
ISSN:1521-4095
DOI:10.1002/adma.201300176