Abstract
Sr-La-Co M-type Ferrite fine particles were prepared by mechanical compounding using the planetary ball-mill and subsequent heat treatment. This experiment was carried out to investigate the effect of La2O3 and Co3O4 additives on the magnetic properties of Sr M-type ferrite fine particles. The optimum condition of making Sr-La-Co M-type ferrite fine particles and some properties of typical specimens are as follows; chemical composition: SrO·6Fe2O3; additive: 2wt%La2O3 and 0.3wt%Co3O4; planetary ball-mill condition: 300rpm×lh; heating condition: 1100°C×1h; magnetic properties are σs=86.5×10-6 Wb·m/kg, Hcj=488kA/m, Tc=453.1°C.
