Title :
Demagnetizing Field in Micromagnetic Simulation Under Periodic Boundary Conditions
Author :
Matsuo, Tetsuji ; Yamazaki, Yuya
Author_Institution :
Grad. Sch. of Eng., Kyoto Univ., Kyoto, Japan
fDate :
5/1/2011 12:00:00 AM
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;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2010.2072953
