Title :
Interaction fields evaluation in fine particle systems
Author :
Geshev, J. ; Schmidt, J.E.
Author_Institution :
Inst. de Fisica, Univ. Federal do Rio Grande do Sul, Porto Alegre, Brazil
fDate :
7/1/1997 12:00:00 AM
Abstract :
A computer simulation model for estimation of the interaction fields in fine particle systems has been developed. The method uses the experimental δMa(H) plot, constructed from the Fourier description of the initial magnetization curve and the hysteresis loop, and the δM(H) plot, obtained from the remanence curves. The dependencies of the interaction fields on the external magnetic field have been obtained from the experimental data for a sample of a Ba-ferrite fine powder
Keywords :
Fourier analysis; magnetic fields; magnetic hysteresis; magnetic particles; magnetisation; remanence; Ba-ferrite fine powder; BaFe12O19; Fourier analysis; computer simulation model; fine particle system; hysteresis loop; initial magnetization; interaction field; magnetic field; remanence; Computer simulation; Demagnetization; Magnetic domains; Magnetic field measurement; Magnetic materials; Magnetization processes; Powders; Remanence; Saturation magnetization; Shape;
Journal_Title :
Magnetics, IEEE Transactions on
