Picosecond Magnetization Dynamics of Single-Crystal Fe3O4 Thin Films

被引：0
|
作者：
Bunce, C. [1 ]
Wu, J. [1 ]
Lu, Y. X.
Xu, Y. B. [2 ]
Chantrell, R. W. [1 ]
机构：
[1] Univ York, Dept Phys, York YO10 5DD, N Yorkshire, England
[2] Univ York, Dept Elect, York YO10 5DD, N Yorkshire, England
来源：
IEEE TRANSACTIONS ON MAGNETICS | 2008年 / 44卷 / 11期
关键词：
Iron oxide; magnetic anisotropy;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The time-resolved magnetization dynamics of epitaxial Fe3O4 ultra-thin films grown on GaAs were investigated for the first time using a field pumped TRMOKE (time-resolved magneto-optical Kerr effect) setup. The dynamic response of the sample to the field pulse was measured for different DC bias fields applied along two orthogonal crystalline directions for 3 and 6 nm films. The results show a heavily damped precessional response to the applied field pulses. By fitting the Landau-Lifshitz-Gilbert equation to the data the temporal evolution of the magnetisation can be reproduced and the damping constant determined to be around 0.1.
引用
收藏
页码：2970 / 2973
页数：4
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