Adding the dispersant to prepare the Mn-Zn ferrites is making the improvement with the traditional oxide compound law. X ray diffractometer （XRD）, scanning electron micro- scope （SEM）,laser particle size analyzer are used to observate sinter microstructure and size. It also analyzes the ratio of raw material and the relationship of magnetic materials. The result indicates that after adding the dispersant, the granularity of the burning powder has significantly reduced, the particle size distribution has been more uniform and the basic shape...
