Ferromagnetic alloy particles for magnetic recording media and process for their manufacture.

摘要

Spindle-shaped ferromagnetic alloy particles, suitable for use as the magnetic material for magnetic recording media such as magnetic tapes and discs, have a mean aspect ratio (ratio of the length of the major axis to that of the minor axis) of less than: 3: 1 and a coercive force of 3.98 x 10<4> to 7.96 x 10<4> Am<-><1> (500 to 1000 Oe) and containing Si in an amount of from 0.1 to 13 atomic based on the amount of Fe.