Magnetization process simulation of Nd-Fe-B magnets taking the demagnetization phenomenon into account

This paper presents results obtained from a numerical simulation of the magnetization distribution of Nd-Fe-B magnets. In the initial magnetization process, we have used the three-dimensional Variable Magnetization and Stoner-Wohlfarth (VMSW) method. In the residual magnetization process and demagnetization process, we have used the magnetization equation of motion. Magnetization equation of motion can be described by the Landau-Lifshitz-Gilbert (LLG) equation. The calculation results were compared with the measured results to verify the accuracy of the numerical simulation.