Abstract
Fe, Ni, Cu and MnSb fine particles were prepared in various Ar pressure (10-4∼5.0 Torr) and were dispersed in a liquid (arkylnaphthalene with 10 vol% surfactant). The mean diameter of Fe particles increases from 20Å to 180Å and that of MnSb particles from 160Å to 280Å with increasing the Ar pressure at which the particles are prepared. Fe and Cu particles were oxidized and MnSb decomposed to Mn and Sb when the pressure was low. Faraday rotation, θF, of these liquids was measured for various concentrations of particles. The θF decreased with decreasing the concentration of particles. These results agree well with the calculated values by assuming that particles are dispersed homogeneously and make no interactions with one other.
