A frequency-domain micromagnetic simulation module based on COMSOL Multiphysics
Source abstract
Abstract
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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Research context
OpenAlex topics: Magnetic properties of thin films · Physics of Superconductivity and Magnetism · Magnetic Properties and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Physics and State Key Laboratory of Surface Physics, Fudan University 1 , Shanghai 200433, China
Institute for Nanoelectronic Devices and Quantum Computing, Fudan University 2 , Shanghai 200433, China
Zhangjiang Fudan International Innovation Center, Fudan University 3 , Shanghai 201210, China
Shanghai Qi Zhi Institute 4 , 200232 Shanghai, China
Shanghai Research Center for Quantum Sciences 5 , Shanghai 201315, China
Funding
Science and Technology Commission of Shanghai Municipality · Shanghai Municipal People’s Government · National Natural Science Foundation of China
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