Methods and apparatus for improved hard magnet properties in...

Details Methods and apparatus for improved hard magnet properties in... Methods and apparatus for improved hard magnet properties in...

2008-09-23

2008-09-23

Feild, Joseph (Department: 2627)

Dynamic magnetic information storage or retrieval

Head

Magnetoresistive reproducing head

Reexamination Certificate

active

10881062

ABSTRACT:
A magnetic head with improved hard magnet properties includes a read sensor; a multi-layered seed layer structure in end regions adjacent the read sensor; and a multi-layered seed layer structure formed upon crystalline materials of the read sensor in the end regions. The multi-layered seed layer structure includes a first seed layer made of chromium-molybdenum (Cr—Mo); a second seed layer made of nickel-tantalum (Ni—Ta); and a third seed layer made of chromium-molybdenum (Cr—Mo). The hard bias layer is preferably cobalt-platinum-chromium (Co—Pt—Cr).

REFERENCES:
patent: 5742459 (1998-04-01), Shen et al.
patent: 6185081 (2001-02-01), Simion et al.
patent: 6219207 (2001-04-01), Pinarbasi
patent: 6351357 (2002-02-01), Xue et al.
patent: 6477020 (2002-11-01), Aoshima et al.
patent: 6511761 (2003-01-01), Tanahashi et al.
patent: 6636400 (2003-10-01), Pinarbashi et al.
patent: 6873500 (2005-03-01), Hasegawa et al.
patent: 6979500 (2005-12-01), Hasegawa et al.
patent: 6980403 (2005-12-01), Hasegawa
patent: 2002/0181171 (2002-12-01), Chien et al.
patent: 2003/0026047 (2003-02-01), Chien et al.
patent: 2003/0030947 (2003-02-01), Ooshima
patent: 2003/0048585 (2003-03-01), Gill
patent: 2003/0058586 (2003-03-01), Pinarbasi et al.
patent: 2003/0099869 (2003-05-01), Oikawa et al.
patent: 2004/0033390 (2004-02-01), Oikawa et al.
patent: 10154619 (1998-06-01), None
patent: 2000132817 (2000-05-01), None
Nirupama Sharma, “Effect of Seedlayer and Junction Geometry on Permanent Magnet Stabilization of Magnetoresistive Heads”, IEEE Transactions on Magnetics, Sep. 2000, pp. 2496-2498, vol. 36, # 5.

Affiliated with

Also associated with

Rating

Methods and apparatus for improved hard magnet properties in... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Methods and apparatus for improved hard magnet properties in..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Methods and apparatus for improved hard magnet properties in... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3947557