Transient magnetization dynamics in the free energy formulation of the Landau-Lifshitz equation

被引：5
作者：
Bocklage, Lars [1 ,2 ]
机构：
[1] DESY, Notkestr 85, D-22607 Hamburg, Germany
[2] Hamburg Ctr Ultrafast Imaging, Luruper Chaussee 149, D-22761 Hamburg, Germany
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2017年 / 429卷
关键词：
FERROMAGNETIC-RESONANCE;
D O I：
10.1016/j.jmmm.2017.01.006
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Transient magnetization dynamics are calculated from the Landau-Lifshitz-Gilbert equation. The internal fields are described by partial derivatives of the sample's free energy density. This description allows the calculation of the magnetization trajectory of homogeneously magnetized samples for all kinds of energy contributions. It provides a general solution for transient magnetization dynamics. The model is used to determine the magnetization response to excitation profiles like rectangular or Gaussian pulses, frequency bursts, wavelet excitations, and chirped THz pulses.
引用
收藏
页码：324 / 329
页数：6
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