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Temperature Dependence of All-Optical Ultrafast Magnetization Switching in TbFeCo

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7 Author(s)
Cheng, T.Y. ; Dept. of Phys., Univ. of York, York, UK ; Wu, J. ; Willcox, M. ; Liu, T.
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Using a time-resolved pump-probe system, we experimentally demonstrated that all-optical magnetization switching in TbFeCo can be observed at both room temperature and a low temperature of 110 K. This switching can only be triggered by a circularly polarized pump beam within a very narrow range of pulse energies. We believe these findings will lead to a better understanding of optically induced magnetization reversal on rare-earth transition metal alloys and provide an ultrafast and efficient way for future magnetic recording technique.

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Magnetics, IEEE Transactions on  (Volume:48 ,  Issue: 11 )