Open AccessSTUDY ON MAGNETIZATION REVERSAL OF BARIUM FERRITE PARTICLES
Author(s) -
Xiaohong Li,
Wei Fu-Lin,
Zheng Yang
Publication year - 2001
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.50.324
Subject(s) - barium ferrite , magnetocrystalline anisotropy , coercivity , materials science , anisotropy , condensed matter physics , magnetization , ferrite (magnet) , ellipsoid , magnetic anisotropy , magnetic field , physics , composite material , optics , quantum mechanics , astronomy
A model of a chain of oblate ellipsoids is proposed for magnetization reversal of barium ferrite particles. The angular dependences of coercivity and critical field were calculated with the consideration of the uniaxial magnetocrystalline anisotropy, the shape anisotropy, the interaction anisotropy of the ellipsoids, as well as the number of ellipsoids. This model could be used to explain the magnetization reversal mechanism of the oriented Ba ferrite particulate media.