Magnetic recording powder having a high coercive force at room t

Details Magnetic recording powder having a high coercive force at room t Magnetic recording powder having a high coercive force at room t

1992-07-29

1993-05-18

Sheehan, John P.

Metal treatment

Stock

Magnetic

H01F 1053

Patent

active

052117707

ABSTRACT:
A magnetic recording powder for use as a material for magnetic recording media including magnetic tapes and magnetic cards, the powder having a high coercive force at room temperatures and a low Curie point, consists of at least one element selected from the group consisting of Y and rare-earth elements (R): 5-20 atomic %, B: 5-20 atomic %, Mn: 4-20 atomic %; and Fe and inevitable impurities: the balance. If required, the powder may further contain Al: 1-10 atomic %, and/or Cr: 1-10 atomic %. The powder has a mean particle size of 0.5-2 .mu.m and a mean crystal grain size of 0.1-0.4 .mu.m.

REFERENCES:
patent: 4792368 (1988-12-01), Sagawa et al.
patent: 4802931 (1989-02-01), Croat
patent: 4975130 (1990-12-01), Matsuura et al.
patent: 5015307 (1991-05-01), Shimotomai et al.

Affiliated with

Also associated with

Rating

Magnetic recording powder having a high coercive force at room t 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 recording powder having a high coercive force at room t, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic recording powder having a high coercive force at room t will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-801916