多物理
微磁学
频域
物理
领域(数学)
领域(数学分析)
磁场
偶极子
磁畴
声学
计算机科学
机械
计算物理学
有限元法
磁化
数学分析
数学
热力学
纯数学
计算机视觉
量子力学
作者
Jiabin Zhang,Weichao Yu,Xiheng Chen,Jiang Xiao
出处
期刊:AIP Advances
[American Institute of Physics]
日期:2023-05-01
卷期号:13 (5)
被引量:12
摘要
Micromagnetic simulation is a numerical method to solve the Landau–Lifshitz–Gilbert (LLG) equation for magnetic dynamics. Most of the mainstream micromagnetic simulation packages, including the object oriented micromagnetic framework and MuMax3, perform simulation in the time domain. Here, utilizing the frequency domain simulation capability of COMSOL Multiphysics, we developed a COMSOL-based micromagnetic simulation module that solves the LLG equation in the frequency domain, which runs much faster and more accurate than time-domain simulations. Frequency-domain simulation is ideal for finding spin wave eigenmodes and the corresponding dispersions. We verify the validity of the module using three examples in the absence of dipolar field, and the inclusion of the dipolar field can be incorporated by combining this module with the alternating current/direct current module within COMSOL.
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