Magnetic properties of composite Ba-ferrite particles containing /spl alpha/-Fe

Composite Ba-ferrite particles containing /spl alpha/-Fe were made by reducing Co-Ti-Sn substituted Ba-ferrite platelet particles in hydrogen gas. The /spl sigma//sub s/ increased monotonically from 55 to 114 emu/g with increasing reduction temperature. Magnetic easy direction of the particles inclined to the plane for the samples with /spl sigma//sub s/ larger than 62 emu/g. The /spl alpha/-Fe was considered to be introduced primarily in the S layer in the Ba-ferrite hexagonal structure.<
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