Title :
Ultrafast demagnetization dynamics in TbFeCo high-density magneto-optical recording films
Author :
Lai, Tianshu ; Liu, Xiaodong ; Hu, Haining ; Gao, Ruixin ; Zhou, Shiming
Author_Institution :
Dept. of Phys., Zhongshan (Sun Yat-Sen) Univ., Guangzhou
Abstract :
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.
Keywords :
demagnetisation; magnetic hysteresis; magnetic thin films; magneto-optical recording; optical films; terbium compounds; TbFeCo; dynamic hysteresis loops; electron lattice heat exchange; electron spin relaxation; high density magneto optical recording films; pump probe delayed times; ultrafast demagnetization dynamics; Delay effects; Demagnetization; Electrons; Laser excitation; Magnetic field measurement; Magnetic films; Magnetic hysteresis; Magnetization; Magnetooptic recording; Optical films; (300.6500) Time-resolved spectroscopy; (320.7130) Ultrafast processes in condensed matter;
Conference_Titel :
Lasers and Electro-Optics, 2008 and 2008 Conference on Quantum Electronics and Laser Science. CLEO/QELS 2008. Conference on
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-55752-859-9
