FERRITE CALCINED BODY, METHOD FOR PRODUCING FERRITE SINTERED MAGNET, AND FERRITE SINTERED MAGNET

摘要

In the general formula Ca _1-xy La _x (Sr _{y '} Ba _1-y' ) _y Fe _2n-z Co _z , which represents the atomic ratio of the metal elements Ca, La, Sr, Ba, Fe and Co, (0.300, 0.392, 0.308), and the coordinates c: (0.300, 0.300, 0.303) in the triangular coordinates of xy, x, Z, and molar ratios are 0.5? Y'? 1 and 0.2 (0.200, 0.330), coordinates d: (0.400, 0.200, 0.400) Wherein the raw material powder is mixed with the raw material powder so as to satisfy? Z 0.25 and 5.2 n 5.6, a step of calcining the mixed raw material powder, a step of crushing the obtained calcined body, firing comprises a step, and the addition of the mixed raw material powder, or the calcined body to SiO ₂ of less than 1.5 mass% to 0.1 mass% in the powder body, and in which the calcined body or the calcined body powder, 0 to 2 mass% in terms of CaO Of CaCO ₃ is added.