J. Phys. IV France 07 (1997) C1-127-C1-128
Study of P Influenced to Magnetic Characteristics of Mn-Zn Ferrites for Power ApplicationsS. Otobe, T. Hashimoto, H. Takei and T. Maeda
FDK Corporation, Kosai Factory, 2281 Washizu, Kosai-shi, Shizuoka 431-04, Japan
We examined that influence of P which changes magnetic characteristics of Mn-Zn ferrites for power applications. As quantity of P increase, larger size grains were formed in the microstructure of ferrite and as the result, core loss increased. We found that P had high solubility on ferrite. Therefore, we supposed that P should generate a great deal of liquid phase even if the amount of P is small. Then, the melting point of ferrite-P was relatively low. As the result, we considered that the large grain is caused by liquid phase.
© EDP Sciences 1997