Science letters: Preparation of high-permeability NiCuZn ferrite

摘要

Appropriate addition of CuO/V_2O_5 and the reduction of the granularity of the raw materials particle decrease the sintering temperature of NiZn ferrite from 1200 deg C to 930 deg C. Furthermore, the magnetic properties of the NiZn ferrite prepared at low temperature of 930 deg C is superior to that of the NiZn ferrite prepared by sintering at high temperature of 1200 deg C because the microstructure of the NiZn ferrite sintered at 930 deg C is more uniform and compact than that of the NiZn ferrite sintered at 1200 deg C. The high permeability of 1700 and relative loss coefficient tan delta/mu_i of 9.0 X 10~(-6) at 100 kHz was achieved in the (Ni_(0.17)Zn_(0.63)Cu_(0.20))Fe_(1.915)O_4 ferrite.