Development of low loss Mn-Zn ferrite material

It is required that the Mn-Zn ferrites for power applications have low MIC loss. We investigated relationships between microstructure and core loss of Mn-Zn ferrites. Moreover, we examined that effects of additives which change distribution of CaO-Si02 layer in the grain boundary region. And a7 the results, we had succeeded in development of low' loss Mn-Zn ferrite material.