Title :
An energy-based model for dynamic hysteresis
Author :
Mazauric, V. ; Maloberti, O. ; Meunier, G. ; Kedous-Lebouc, A. ; Geoffroy, O. ; Rebière, Y.
Abstract :
A new approach to face the problem of dynamic hysteresis and assess extra losses in soft magnetic materials is investigated. Thanks to a spatial averaging technique and a variational principle, a dedicated formulation is derived. It takes into account microscopic magnetization mechanisms and domain wall motion-induced Joule losses. Implementation within the finite element method is discussed, and calculations are carried out for a 2-D geometry. The model provides first-order low-pass filtering properties.
Keywords :
finite element analysis; low-pass filters; magnetic domain walls; magnetic hysteresis; micromagnetics; soft magnetic materials; 2D geometry; Joule losses; domain wall motion; dynamic hysteresis; finite element method; low-pass filtering; microscopic magnetization mechanisms; soft magnetic materials; spatial averaging technique; variational principle; Finite element methods; Geometry; Low pass filters; Magnetic domain walls; Magnetic force microscopy; Magnetic hysteresis; Magnetic losses; Magnetic separation; Magnetization; Soft magnetic materials; Dynamic hysteresis; eddy currents; magnetic materials; transient formulations;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2005.854877
