Patent ID: 6383407
Filing Date: 2002-05-07
Classification: C01G,C01P,C04B,H01F

Abstract:
A ferrite powder for bonded magnets having a substantially magnetoplumbite-type crystal structure, said ferrite powder having a basic composition represented by the following general formula:(A1âˆ’xRx)OÂ·n[(Fe1âˆ’yMy)2O3] by atomic ratio, wherein A is Sr and/or Ba; R is at least one rare earth element including Y, La being indispensable; M is Co, or Co and Zn; and x, y and n are numbers meeting the following conditions: 0.01&lE;x&lE;0.4, 0.005&lE;y&lE;0.04, and 5&lE;n&lE;6.