山西大学学报（自然科学版）2024，Vol.47Issue(1)：171-178,8.DOI:10.13451/j.sxu.ns.2023047
铁磁共振下均匀磁化强度的惯性动力学
Inertial Dynamics of Uniform Magnetization in Ferromagnetic Resonance
摘要
Abstract
In this paper,the dynamics of magnetization in ferromagnets is studied by using the inertial Landau-Lifshitz-Gilbert equa-tion.Under the same initial conditions,the equation is analyzed theoretically and simulated numerically by applying two different currents.The results show that when two different currents are given,the overall trend of pole angle,pole angular velocity,direction angle and direction angular velocity vibration tends to be stable with time,and is not affected by different applied currents.In addi-tion,when the current along the z-axis is applied,it is found that the precession oscillation of each magnetization component caused by the inertia term is almost a straight line on a long time scale.Finally,using the applied sinusoidal time-dependent current,it is found that besides the normal precession resonance peak,there is also nutation resonance peak caused by inertial effect.关键词
磁化强度动力学/惯性Landau-Lifshitz-Gilbert方程/章动Key words
magnetization dynamics/inertial Landau-Lifshitz-Gilbert equation/nutation分类
物理学引用本文复制引用
屈川,南雪萌,李再东..铁磁共振下均匀磁化强度的惯性动力学[J].山西大学学报（自然科学版）,2024,47(1):171-178,8.基金项目
量子光学与光量子器件国家重点实验室开放课题(KF202203) （KF202203）
