Demagnetizing Field in Micromagnetic Simulation Under Periodic Boundary Conditions

Author

Matsuo, Tetsuji ; Yamazaki, Yuya

Author_Institution

Grad. Sch. of Eng., Kyoto Univ., Kyoto, Japan

Volume

47

Issue

5

fYear

2011

fDate

5/1/2011 12:00:00 AM

Firstpage

902

Lastpage

905

Abstract

The demagnetizing field in a micromagnetic simulation is studied under periodic boundary conditions. To evaluate the influence of the periodic structure, macroscopic demagnetizing factors are defined. A large demagnetizing field yields a linear magnetization where the susceptibility is given by the inverse of the macroscopic demagnetizing factor. The shape anisotropy induces rectangular hysteresis loops for which the coercive force is evaluated by the macroscopic demagnetizing factors.

Keywords

coercive force; demagnetisation; magnetic anisotropy; magnetic hysteresis; magnetic structure; magnetic susceptibility; micromagnetics; periodic structures; coercive force; demagnetizing field; macroscopic demagnetizing factors; micromagnetic simulation; periodic boundary conditions; periodic structure; rectangular hysteresis loops; shape anisotropy; susceptibility; the linear magnetization; Boundary conditions; Demagnetization; Magnetic domains; Magnetic hysteresis; Magnetization; Magnetostatics; Coercive force; demagnetizing factor; micromagnetic simulation; periodic structure; susceptibility;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2010.2072953

Filename

5560842