| abstract |
The invention discloses a preparation method of a high-performance nanometer rare earth doped strontium ferrite permanent magnet material. The chemical composition formula of the rare earth-doped strontium ferrite of the present invention is Sr 1-x Ln x Fe 12-x A x O 19 , in the compound, element Ln is rare earth elements such as La and Yb, and element A is two such as Co. Valence transition metal element, 0≤x≤0.2. In the present invention, the Sr 1-x Ln x Fe 12- x A x O 19 precursor is prepared by the co-precipitation method of the Taylor reactor, and then magnetic field orientation is carried out, and sintered under the magnetic field to obtain rare earth-doped strontium ferrite, and the preparation method can obtain Precursors with good crystallinity and a size of 100-200nm are co-doped with rare earth elements and metal elements, and the strontium ferrite obtained after sintering has higher magnetic properties. The preparation method can effectively reduce the high temperature sintering temperature and time, save energy consumption. |