Comparison of experimental and numerical micromagnetic dynamics in coherent precessional switching and modal oscillations

被引:52
作者
Hiebert, WK [1 ]
Ballentine, GE [1 ]
Freeman, MR [1 ]
机构
[1] Univ Alberta, Dept Phys, Edmonton, AB T6G 2J1, Canada
关键词
D O I
10.1103/PhysRevB.65.140404
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Spatiotemporally resolved experimental vector magnetometry is combined with time-domain numerical micromagnetic simulation to investigate two, precessional-based, dynamic processes in thin-film magnetic elements. Large angle (>180degrees), ultrafast, magnetization vector motions compare well between experiment and simulation and constitute a direct observation of nearly-ideal precessional switching. High-frequency spin-wave generation is inferred by apparent reduction in the magnetization vector length. Small angle (<1degrees) nonequilibrium modal oscillations in ferromagnetic resonance are compared and show considerable agreement in the long-wavelength magnetic spatial structure.
引用
收藏
页码:1404041 / 1404044
页数:4
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