Dv. Berkov et al., New method for the reconstruction of the distribution of fine particle magnetic moments in a ferrofluid, IEEE MAGNET, 35(5), 1999, pp. 4064-4066
We present a new method to reconstruct the distribution of magnetic moments
rho(mu) of ferrofluid particles from the magnetization curve measured on a
ferrofluid in the liquid state. The method employs the solution of the int
egral equation describing the magnetization of the fine particle system in
an external field and requires net a priori assumptions concerning the shap
e of rho(mu). Reconstruction results for both the computer simulated magnet
ization curves and the experimental data obtained on Co-ferrofluids are pre
sented. In the latter case comparison of the reconstructed distribution wit
h rho(mu) calculated from the particle size distribution obtained via elect
ron microscopy shows good quantiative agreement.