Densification of MnZn ferrite sintered under multi-physical field coupling

This work provides a novel idea of fabricating MnZn bulk ferrite materials. MnZn ferrite powders with a composition of Zn0.8Mn0.2Fe2O4 (wt%) are sintered to form cylindrical bulk ferrite with diameters of 1.0mm, and heights of 1.0mm under multi-physical field coupling with Gleeble-1500D thermal simulation instrument. The results show that sintered ferrite has a spinel structure, and that some magnetic properties like maximum energy product and remanence of the Multi-physical Field Coupling sintered sample are better than that obtained by conventional sintering. Densification process and solid phase reaction are promoted by alternating magnetic field and high frequency wave generated by AC current