Magnetic media with high Ms magnetic layer

Details Magnetic media with high Ms magnetic layer Magnetic media with high Ms magnetic layer

2008-01-01

2008-01-01

Bernatz, Kevin M. (Department: 1773)

Stock material or miscellaneous articles

Magnetic recording component or stock

Thin film media

Reexamination Certificate

active

10766918

ABSTRACT:
Magnetic recording media having a magnetic layer, wherein the magnetic layer comprises a continuous matrix material and a separate portion that is different from the matrix is disclosed. The matrix comprises a non-ferromagnetic material that is non-ferromagnetic in a bulk state. The separate portion comprises a ferromagnetic material and comprises substantially none of at least one component of the non-ferromagnetic material. One embodiment is a dual magnetic layer recording media including a lower magnetization (Ms), exchange decoupled magnetic bottom layer; and a high Ms, high magnetic anisotropy (Ku), magnetic top layer having exchange decoupled grains. This media enables reduced total magnetic layer thickness and higher signal, while maintaining high Ku and low media noise.

REFERENCES:
patent: 4652499 (1987-03-01), Howard
patent: 4654276 (1987-03-01), Ahlert et al.
patent: 5051288 (1991-09-01), Ahlert et al.
patent: 5066552 (1991-11-01), Howard et al.
patent: 5227212 (1993-07-01), Ahlert et al.
patent: 5239534 (1993-08-01), Matsumoto
patent: 5652054 (1997-07-01), Kikitsu et al.
patent: 5658659 (1997-08-01), Chen et al.
patent: 5665468 (1997-09-01), Sekiya et al.
patent: 5744256 (1998-04-01), Goda et al.
patent: 5849386 (1998-12-01), Lal et al.
patent: 6007623 (1999-12-01), Thiele et al.
patent: 6042939 (2000-03-01), Takahashi
patent: 6086974 (2000-07-01), Thiele et al.
patent: 6174597 (2001-01-01), Yusu et al.
patent: 6221219 (2001-04-01), Hashimoto et al.
patent: 6440589 (2002-08-01), Fullerton et al.
patent: 6472047 (2002-10-01), Kirino et al.
patent: 6602620 (2003-08-01), Kikitsu et al.
patent: 6699600 (2004-03-01), Shimizu et al.
patent: 6773745 (2004-08-01), Arisaka et al.
patent: 2002/0080520 (2002-06-01), Futamoto et al.
patent: 2002/0095767 (2002-07-01), Takizawa et al.
patent: 2003/0064249 (2003-04-01), Uwazumi et al.
patent: 2003/0215675 (2003-11-01), Inaba et al.
patent: 2004/0202843 (2004-10-01), Moriwaki et al.
Derwent Abstract Translation of US Patent App 2003-0215675 A1 (Derwent Acc No. 2002-427014).

Affiliated with

Also associated with

Rating

Magnetic media with high Ms magnetic layer 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 media with high Ms magnetic layer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic media with high Ms magnetic layer will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3906586