Partially-oxidized cap layer for hard disk drive magnetic media

Details Partially-oxidized cap layer for hard disk drive magnetic media Partially-oxidized cap layer for hard disk drive magnetic media

2011-08-16

2011-08-16

Rickman, Holly (Department: 1785)

Stock material or miscellaneous articles

Magnetic recording component or stock

Thin film media

C427S130000, C427S131000

Reexamination Certificate

active

07998607

ABSTRACT:
A perpendicular recording magnetic media with a partially-oxidized cap layer combines a second oxide layer with a first cap layer to form the singular, partially-oxidized cap. The oxidized portion and the non-oxidized portion of the partially-oxidized layer are sputtered from a same target and have a same composition of metallic elements. The Ms of the oxidized portion is about twice as high as the non-oxidized portion. The oxidized portion has a thickness in the range of about 5 to 25 angstroms. The layer composition may comprise CoPtCrBTa, with a Cr at % of about 18-24%, Pt at about 13-20%, B at about 4-10%, and Ta at about 0-2%.

REFERENCES:
patent: 6641901 (2003-11-01), Yoshida et al.
patent: 6773826 (2004-08-01), Nakagawa et al.
patent: 7166375 (2007-01-01), Shimizu et al.
patent: 7354618 (2008-04-01), Chang et al.
patent: 2003/0017370 (2003-01-01), Shimizu et al.
patent: 2006/0090998 (2006-05-01), Honda et al.
patent: 2006/0286413 (2006-12-01), Liu et al.
patent: 2007/0248843 (2007-10-01), Wu et al.
patent: 2007/0292721 (2007-12-01), Berger et al.
patent: 2008/0070065 (2008-03-01), Berger et al.
patent: 2008/0096053 (2008-04-01), Bian et al.
patent: 2008/0138662 (2008-06-01), Berger et al.
patent: 2009/0086372 (2009-04-01), Ichihara et al.
patent: 7320257 (1995-12-01), None
patent: 2006046732 (2006-05-01), None

Affiliated with

Also associated with

Rating

Partially-oxidized cap layer for hard disk drive magnetic media does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Partially-oxidized cap layer for hard disk drive magnetic media, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Partially-oxidized cap layer for hard disk drive magnetic media will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2618989