Ultrafast Demagnetization Dynamics In Tbfeco High-Densitymagneto-Optical Recording Films

Tianshu Lai,Xiaodong Liu,Haining Hu,Ruixin Gao,Shiming Zhou

2008 CONFERENCE ON LASERS AND ELECTRO-OPTICS & QUANTUM ELECTRONICS AND LASER SCIENCE CONFERENCE, VOLS 1-9（2008）

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摘要

Ultrafast demagnetization processes of TbFeCo films are studied. Dynamic hysteresis loops measured at different pump-probe delayed times shows that the ultrafast demagnetization originates from electron spin relaxation instead of electron-lattice heat exchange. (C) 2008 Optical Society of America

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