Modeling of the Laser-Heating Induced Ultrafast Demagnetization Dynamics in Ferrimagnetic Thin Films
Modeling of the Laser-Heating Induced Ultrafast Demagnetization Dynamics in Ferrimagnetic Thin Films
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亚铁磁薄膜中激光加热诱导超快退磁动力学的建模
DOI:
10.1109/tmag.2013.2252154
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发表时间:
2013-07
影响因子:
2.1
通讯作者:
Yaowen Liu
中科院分区:
文献类型:
--
作者:
Qinyuan Jin;Qinyuan Jin;Yaowen Liu;Yaowen Liu
Ultrafast demagnetization excited by laser pulses introduces the technological possibility for controlling the magnetic properties of materials on sub-picosecond regime. In this paper, the demagnetization dynamics of amorphous ferrimagnetic TbFeCo alloy is modeled by using the stochastic Landau-Lifshitz-Gilbert equation on an atomistic level. The transition metal (Fe, Co) and rare earth (Tb) atoms are constructed by two different sub-lattice systems. Laser-heating induced demagnetization processes are clearly demonstrated by a series of snapshots. Our simulations show that full demagnetization on the sub-picosecond time scale requires a temperature over the Curie point, and the demagnetization time increases with the Tb content.
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DOI:
10.1109/intmag.2005.1463436
发表时间:
2005
期刊:
INTERMAG Asia 2005. Digests of the IEEE International Magnetics Conference, 2005.
影响因子:
--
作者:
M.T. Rahman;X. Liu;M. Matsumoto;A. Morisako
通讯作者:
M.T. Rahman;X. Liu;M. Matsumoto;A. Morisako
影响因子:
3.7
作者:
Ostler, Thomas A.;Evans, Richard F. L.;Kimel, Alexey
通讯作者:
Kimel, Alexey
影响因子:
64.8
作者:
Kimel, AV;Kirilyuk, A;Rasing, T
通讯作者:
Rasing, T
影响因子:
3.7
作者:
Stanciu, CD;Kimel, AV;Rasing, T
通讯作者:
Rasing, T
影响因子:
8.6
作者:
R. Chimata;A. Bergman;L. Bergqvist;B. Sanyal;O. Eriksson
通讯作者:
R. Chimata;A. Bergman;L. Bergqvist;B. Sanyal;O. Eriksson