PERMANENT MAGNET MATERIAL AND PREPARATION METHOD THEREFOR

Provided are a permanent magnet material and a preparation method therefor. The permanent magnet material comprises AB12O19, wherein A includes Sr, Ca and La, and B includes Fe and Co; and on the basis that the total mass of an oxide of A and an oxide of B is 100%, the mass fraction of the oxide of A is 12-18 wt%, and the mass fraction of the oxide of B is 82-88 wt%. The preparation method comprises: 1) crushing a first raw material mixture to obtain a primary crushed material; 2) pre-firing the primary crushed material to obtain a pre-fired material; 3) mixing the pre-fired material with a second raw material mixture, and crushing same to obtain a secondary crushed material; 4) subjecting the secondary crushed material to magnetic field molding to obtain a molded body; and 5) pre-heating and sintering the molded body to obtain the permanent magnet material. La présente invention concerne un matériau d'aimant permanent et son procédé de préparation. Le matériau d'aimant permanent se compose d'AB12O19, A compr