| 摘要 |
A magnetic powder for magnetic recording is provided that has improved properties suitable for a magnetic recording medium used with a high-sensitivity read head utilizing an MR device. The magnetic powder is composed of iron-base acicular particles containing Co, Al, R (rare earth elements, including Y) and oxygen within the ranges of Co/Fe=10-50 at. %, dissolved Al/(Fe+Co)=5-50 at. %, R/(Fe+Co)=2-25 at. % and oxygen=not greater than 25 wt %; and the acicular particles have an average major axis length of 25-80 nm and a saturated magnetization sigmas of 10-130 emu/g,
|
