NUMERICAL-CALCULATION OF THE TEMPERATURE-VARIATION OF THE OPTICAL ANISOTROPY IN MAGNETIC FLUIDS

The temperature variation of the optical anisotropy in magnetic fluids has been calculated numerically. The calculations are based on the mo no-dispersed particle model and the conversion of blocked particles in to unblocked ones. The results have shown the basic features of the te mperature variation of the optical anisotropy which were revealed expe rimentally. A basic feature that is seen in the calculated results, in agreement with experiment, is the existence of a peak in the optical anisotropy at a given temperature, T-m. Moreover, the variation in the value of T-m with concentration and applied field are in agreement wi th those found experimentally.