Effects of trace of Bi2O3 addition on the morphology of strontium ferrite particles

A strontium ferrite powder added with trace of Bi2O3 was prepared by the conventional high-temperature solid phase reaction. The effects of Bi2O3 addition on the morphology of Sr-ferrite particles fired at different temperatures and times were investigated. The results show that a small quantity of Bi2O3 addition accelerates the reaction of SrO and Fe2O3 to form SrM ferrite and obviously improves the morphology and size of the strontium ferrite particles. A possible mechanism was proposed to interpret the influence of trace of Bi2O3 addition on the morphology of strontium ferrite particles.