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Thermally Assisted All‐Optical Helicity Dependent Magnetic Switching in Amorphous Fe 100– x Tb x Alloy Films
Author(s) -
Hassdenteufel Alexander,
Hebler Birgit,
Schubert Christian,
Liebig Andreas,
Teich Martin,
Helm Manfred,
Aeschlimann Martin,
Albrecht Manfred,
Bratschitsch Rudolf
Publication year - 2013
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201300176
Subject(s) - ferrimagnetism , materials science , demagnetizing field , curie temperature , condensed matter physics , magnetization , amorphous metal , remanence , amorphous solid , alloy , thermal hysteresis , helicity , ferromagnetism , metallurgy , crystallography , magnetic field , phase transition , physics , chemistry , particle physics , quantum mechanics
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.