Production of magnetic oxide powder.

摘要

A powder of magnetic oxides given by the general formula: MeFe2O4 where Me is at least one element of divalent metal element selected from the group consisting of Ni, Zn, Cu, Mn and Co, is produced by a method comprising the steps of preparing a magnetic oxide precursor composed of alpha -FeOOH and a complex carbonate compound of at least one divalent metal element deposited on surfaces of particles of alpha -FeOOH; and then treating the resultant magnetic oxide precursor with heat.