Institute of Physics, Chemnitz University of Technology, 09107 Chemnitz, Germany.
Adv Mater. 2013 Jun 11;25(22):3122-8. doi: 10.1002/adma.201300176. Epub 2013 Apr 25.
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.
本文介绍了铁磁性 Fe(100-x)Tb(x) 合金中的全光开关 (AOS)。在低于、高于和没有磁补偿点的样品中都观察到了 AOS。结果发现，AOS 与激光加热到居里温度有关，并且与低剩磁样品磁化密切相关。在超过 220 emu/cc 的阈值磁化强度后，与螺旋相关的 AOS 被纯热退磁所取代。
