Plate-like magnetoplumbite type ferrite particles for magnetic recording and process for producing the same.

摘要

Ba- containing plate-like magnetoplumbite-type ferrite particles suitable for magnetic recording contain ions of one metal (II) selected from Ni and Zn and ions of one metal (IV) selected from Ti, Sn and Zr, have zinc incorporated as a solid solution close to the particle surface and exhibit a change of coercive force at a temperature of from -20 to 120 DEG C of from -39.8 to +39.8 A m<-><1>/ DEG C (-0.5 to +0.5 Oe/ DEG C).