Micromagnetic simulation of the orientation dependence of grain boundary properties on the coercivity of Nd-Fe-B sintered magnets | Zendy

Jun Fujisaki | Zendy; Atsushi Furuya | Zendy; Yuji Uehara | Zendy; Koichi Shimizu | Zendy; Tadashi Ataka | Zendy; T. Tanaka | Zendy; Hirotaka Oshima | Zendy; T. Ohkubo | Zendy; S. Hirosawa | Zendy; K. Hono | Zendy

Open Access

Micromagnetic simulation of the orientation dependence of grain boundary properties on the coercivity of Nd-Fe-B sintered magnets

Author(s) -

Jun Fujisaki,

Atsushi Furuya,

Yuji Uehara,

Koichi Shimizu,

Tadashi Ataka,

T. Tanaka,

Hirotaka Oshima,

T. Ohkubo,

S. Hirosawa,

K. Hono

Publication year - 2016

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.4944773

Subject(s) - coercivity , materials science , grain boundary , magnet , crystallite , ferromagnetism , condensed matter physics , anisotropy , micromagnetics , magnetization , metallurgy , magnetic field , microstructure , mechanical engineering , optics , physics , quantum mechanics , engineering

This paper is focused on the micromagnetic simulation study about the orientation dependence of grain boundary properties on the coercivity of polycrystalline Nd-Fe-B sintered magnets. A multigrain object with a large number of meshes is introduced to analyze such anisotropic grain boundaries and the simulation is performed by combining the finite element method and the parallel computing. When the grain boundary phase parallel to the c-plane is less ferromagnetic the process of the magnetization reversal changes and the coercivity of the multigrain object increases. The simulations with various magnetic properties of the grain boundary phases are executed to search for the way to enhance the coercivity of polycrystalline Nd-Fe-B sintered magnets

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