AN EXPERIMENTAL-STUDY OF THE MAGNETIC-BEHAVIOR OF PARTICULATE DISPERSIONS .1. CHROMIUM DIOXIDE

A detailed study of the magnetic behaviour of CrO2 dispersions is desc ribed. The study includes static and dynamic measurements and also som e preliminary results on the structure of the dispersion obtained by N eutron Depolarisation which was carried out in an attempt to determine the long-range order in the dispersion. The measurements are interpre ted in terms of a simple model of the evolution of dispersion quality during the milling process. Magnetic measurements are shown to be usef ul in characterising dispersion quality although a number of technique s are required in order to probe different aspects of dispersion behav iour.