Open AccessInvestigation of high-performance hard magnetic properties of nanocomposite permanent magnets by micromagnetic finite element method*
Author(s) -
Hongwei Zhang,
Chuanbing Rong,
Shaoying Zhang,
Baogen Shen
Publication year - 2004
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.53.4347
Subject(s) - coercivity , magnet , materials science , isotropy , microstructure , finite element method , micromagnetics , condensed matter physics , phase (matter) , nanocomposite , hysteresis , anisotropy , magnetic hysteresis , composite material , magnetization , magnetic field , thermodynamics , mechanical engineering , physics , optics , quantum mechanics , engineering
The microstructure with which a hard magnetic phase precipitates from the soft magne ticmatrix, is observed in nanocomposite Pr2Fe14B-αFe. The magnetic hysteresis loo ps are simulated by micromagnetic finite element method. The dependence of reman ence, coercivity and maximum energy product on the width of soft phase are discu ssed in detail. Although a single hard magnetic phase behavior is observed, the coercivity decreases monotonically with the increase of soft phase width from 0 to 12 nm. The obtained maximum energy products are 184 and 674 kJ/m3 for isotropic and anisotropic magnets, respectively.