Title :
Angular dependence of magnetization reversal in γ-Fe2 O3 single particles: An experimental and modelling study
Author :
Conochie, S. R Mc ; Bissell, P.R. ; Parker, D.A. ; Gotaas, J.A.
Author_Institution :
Dept. of Phys., Central Lancashire Univ., Preston, UK
fDate :
9/1/1997 12:00:00 AM
Abstract :
The switching field for isolated γ-Fe2O3 magnetic particles has been investigated as a function of the applied field angle both experimentally and numerically. Micromagnetic simulations for a typical measured particle with cubic crystalline directions of ⟨100⟩ and ⟨110⟩ with respect to its long axis were compared directly with experimental results. At large applied field angles, the agreement between experimental results and numerical simulations was poor. However, at the smaller applied field angles the simulations gave reasonable agreement with the experimental results
Keywords :
iron compounds; magnetic anisotropy; magnetic particles; magnetisation reversal; scanning electron microscopy; Fe2O3; applied field angle; audio recording tape; cubic crystalline directions; magnetization reversal; micromagnetic simulations; numerical simulations; single particles; switching field; Anisotropic magnetoresistance; Crystallization; Gaussian distribution; Histograms; Lattices; Magnetic anisotropy; Magnetic field measurement; Magnetic particles; Magnetic separation; Magnetic switching; Magnetization reversal; Micromagnetics; Numerical models; Numerical simulation; Particle measurements; Perpendicular magnetic anisotropy; Saturation magnetization;
Journal_Title :
Magnetics, IEEE Transactions on
