Fast Fourier transform on multipoles for rapid calculation of magnetostatic fields

Author

Long, H.H. ; Ong, E.T. ; Liu, Z.J. ; Li, E.P.

Author_Institution

Data Storage Inst., Nat. Univ. of Singapore, Singapore

Volume

42

Issue

2

fYear

2006

Firstpage

295

Lastpage

300

Abstract

This paper describes the implementation of the fast Fourier transform on multipole (FFTM) algorithm for rapid calculation of magnetostatic fields in micromagnetics. The method is based on the multipole approximation theory, in which the computation-intensive transformation operations of the multipole in local expansions are accelerated by using FFT algorithms. Hence, this algorithm has the computational efficiency of the FFT-based approach, but is not confined to use in problems with regularly spaced elements.

Keywords

fast Fourier transforms; magnetic fields; micromagnetics; FFT algorithms; FFTM; fast Fourier transform; magnetostatic fields; micromagnetics; multipole approximation theory; transformation operations; Approximation methods; Fast Fourier transforms; Magnetic anisotropy; Magnetic confinement; Magnetic materials; Magnetization processes; Magnetostatics; Micromagnetics; Perpendicular magnetic anisotropy; Saturation magnetization; Fast Fourier transform on multipole (FFTM); magnetostatic fields; micromagnetic simulations; multipole approximations;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2005.861505

Filename

1580697