Soft-Magnetic Mg-Zn Ferrite Ceramics Comparable in Performance to 600NN Ni-Zn Ferrite: Fabrication by Radiation-Enhanced Thermal Sintering

摘要

Mg-Zn ferrites comparable in performance to 600NN Ni-Zn ferrite have been produced by radiation-enhanced thermal sintering. We have studied the effect of their basic composition and doping on their electromagnetic properties. The results demonstrate that doping with bismuth oxide as a low-melting-point material allows one to activate sintering processes, thereby improving the performance of the material. The addition of surfactants is shown to be effective in raising the density of green compacts for the preparation of the ferrites.