| 斯通纳粒子LLG方程的线性稳定性分析 |
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| 引用本文： | 郭子政.斯通纳粒子LLG方程的线性稳定性分析[J].内蒙古师范大学学报(自然科学版),2009,38(2). |
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| 作者姓名： | 郭子政 |
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| 作者单位： | 内蒙古师范大学,物理与电子信息学院,内蒙古,呼和浩特,010022
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| 摘 要： | 利用微分方程线性稳定性判据,分析了斯通纳粒子LLG方程的动力学性质.随着外加磁场的增强,LLG方程的不动点发生从中心到鞍点或鞍点到中心的转换.当磁场垂直于易轴时,转换后的中心不在易轴上,仅当磁场平行于易轴时才存在不依赖磁场的不动点,且在某个磁场范围内可以发生所期待的沿易轴的两种取向m0 和-m0 的转换.
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| 关 键 词： | 斯通纳粒子 磁矩翻转 朗道-利夫席茨-吉尔伯特方程 稳定性 |
Linear Stability Analysis of the LLG Equation of the Stoner Particles |
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| GUO Zi-zheng.Linear Stability Analysis of the LLG Equation of the Stoner Particles[J].Journal of Inner Mongolia Normal University(Natural Science Edition),2009,38(2). |
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| Authors: | GUO Zi-zheng |
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| Institution: | College of Physics and Electronic Information;Inner Mongolia Normal University;Hohhot 010022;China |
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| Abstract: | The dynamical stability of the LLG equation of the Stoner particles is analyzed by using the linear stability criteria of differential equations.With the increase of external magnetic field,the fixed points of the LLG equation convert from the centers to the saddle points,or saddle points to the centers.If the magnetic field is perpendicular to the easy axis,the state after the conversion is not on the easy axis.Only when the magnetic field is parallel to the easy axis,there exist the fixed points that are ... |
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| Keywords: | Stoner particle magnetization reversal LLG equation stability |
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