STRUCTURAL INVESTIGATION OF FERRIMAGNETIC PARTICLES FORMED BY GLASS CRYSTALLIZATION

By means of a definite heat treatment magnetite crystals were formed d ispersed in a silicate glass, which initially contains Fe2O3 as a glas s component. The specific saturation magnetization of the glass cerami c manufactured turns out to be dependent on the heat treatment conditi ons and shows a significant maximum for a certain temperature and trea tment duration. Small angle X-ray scattering, transmission electron mi croscopy, and X-ray diffraction were used to obtain structural paramet ers. The correlations between size and packing density of the magnetit e crystals and the magnetic properties are discussed.