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

Author

Nakahata, Yasushi ; Todaka, Takashi ; Enokizono, Masato

Author_Institution

Dept. of Electr. & Electron. Eng., Oita Univ., Oita, Japan

fYear

2010

fDate

9-12 May 2010

Firstpage

1

Lastpage

1

Abstract

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.

Keywords

boron; demagnetisation; iron; magnetisation; neodymium; numerical analysis; permanent magnets; Landau-Lifshitz-Gilbert equation; Nd-Fe-B magnet; NdFeB; magnetization distribution; magnetization equation of motion; magnetization process simulation; numerical simulation; residual demagnetization; residual magnetization; three-dimensional variable magnetization and Stoner-Wohlfarth method; Anisotropic magnetoresistance; Demagnetization; Equations; Magnetic anisotropy; Magnetic fields; Magnetic materials; Magnetization processes; Numerical simulation; Permanent magnets; Perpendicular magnetic anisotropy;

fLanguage

English

Publisher

ieee

Conference_Titel

Electromagnetic Field Computation (CEFC), 2010 14th Biennial IEEE Conference on

Conference_Location

Chicago, IL

Print_ISBN

978-1-4244-7059-4

Type

conf

DOI

10.1109/CEFC.2010.5481476

Filename

5481476