| abstract |
A method of manufacturing a sintered ferrite magnet having a magnetoplumbite-type crystal structure is provided. A general formula: (A 1-x R x ) O · n [(Fe 1-y M y) 2 O 3] ( atomic ratio) (wherein, A is Sr or Sr and Ba, R is At least one rare earth element containing Y and necessarily containing La, and M is at least one selected from the group consisting of Co, Mn, Ni and Zn and always containing Co, 0.01 ≦ x ≦ 0.4, [x / (2.6n)] ≦ y ≦ [x / (1.6n)] and 5 ≦ n ≦ 6), and a compound of element A and an iron compound were mixed After calcining and adding the Fe 3 O 4 which is 0.1 to 11% by weight of the total Fe content on the basis of the R element compound, M element compound and Fe element in the pulverization step of the obtained calcined product, the average grain A fine powder having a diameter of 0.7 to 0.9 μm is formed, and the slurry of the fine powder is formed in a magnetic field and sintered. [Selection] Figure 1 |