Magnetic powder for magnetic recording

Details Magnetic powder for magnetic recording Magnetic powder for magnetic recording

2006-07-11

2006-07-11

Sheehan, John P. (Department: 1742)

Metal treatment

Stock

Magnetic

C428S403000, C428S692100, C428S690000, C428S690000, C428S900000, C252S062550

Reexamination Certificate

active

07074281

ABSTRACT:
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 σs of 10–130 emu/g,

REFERENCES:
patent: 6309479 (2001-10-01), Okinaka et al.
patent: 6432503 (2002-08-01), Aonuma et al.
patent: 10-69629 (1998-03-01), None
patent: 2001-6147 (2001-01-01), None
patent: 2001-81506 (2001-03-01), None

Affiliated with

Also associated with

Rating

Magnetic powder for magnetic recording does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Magnetic powder for magnetic recording, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic powder for magnetic recording will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3588004