MAGNET POWDER AND METHOD FOR PREPARATION THEREOF

摘要

A magnet powder which is prepared by providing a ferrite magnet powder having a structure obtained by substituting La for a part of Sr and substituting Ti, Zn and Co for a part of Fe in a Sr ferrite magnet, and pre-sintering the resultant ferrite magnet powder at a temperature of 1100 DEG C to 1450 DEG C. The substitution of Zn for a part of Fe together with the substitution of Ti for a part of Fe for charge compensation improves the saturation magnetization of the ferrite magnet, and the substitution of Co for a part of Fe together with the substitution of Ti for a part of Fe for charge compensation improves the coercive force thereof. The magnet powder can be prepared at a lower cost due to the utilization of Ti for the compensation of charge.