Dynamic magnetic information storage or retrieval – Head – Magnetoresistive reproducing head
Reexamination Certificate
2011-03-01
2011-03-01
Miller, Brian E (Department: 2627)
Dynamic magnetic information storage or retrieval
Head
Magnetoresistive reproducing head
C360S324120
Reexamination Certificate
active
07898776
ABSTRACT:
A tunneling magnetic sensing element is provided, in which an increase in the magnetostriction of a free magnetic layer is reduced and the rate of change in resistance is high. A laminate T1constituting the tunneling magnetic sensing element includes a portion in which a pinned magnetic layer, a barrier layer, and a free magnetic layer are disposed in that order from the bottom. An enhancing layer disposed on the barrier layer side of the free magnetic layer includes a first enhancing layer on the barrier layer side and a second enhancing layer on the soft magnetic layer side, and the Fe content of a CoFe alloy constituting the first enhancing layer is specified to be larger than the Fe content of the CoFe alloy of the second enhancing layer.
REFERENCES:
patent: 5966012 (1999-10-01), Parkin
patent: 6724585 (2004-04-01), Hayashi
patent: 7075759 (2006-07-01), Hasegawa et al.
patent: 7256971 (2007-08-01), Horng et al.
patent: 7283333 (2007-10-01), Gill
patent: 7495868 (2009-02-01), Seino et al.
patent: 7567412 (2009-07-01), Nakabayashi et al.
patent: 7683445 (2010-03-01), Pietambaram et al.
patent: 2003/0168673 (2003-09-01), Yuasa et al.
patent: 2005/0168887 (2005-08-01), Yuasa et al.
patent: 2006/0110625 (2006-05-01), Nakabayashi et al.
patent: 2007/0139827 (2007-06-01), Gao et al.
patent: 2010/0123208 (2010-05-01), Zhao et al.
patent: 11-121832 (1999-04-01), None
patent: 11-161919 (1999-06-01), None
patent: 2003-31867 (2003-01-01), None
patent: 2003-60263 (2003-02-01), None
patent: 2004-31838 (2004-01-01), None
patent: 2005-191312 (2005-07-01), None
patent: 2006-128410 (2006-05-01), None
patent: 2006-134931 (2006-05-01), None
Office Action issued in corresponding Japanese Patent Application No. 2006-212237; issued Dec. 16, 2008, Not translated.
Hasegawn Naoya
Ide Yosuke
Ishizone Masahiko
Nakabayashi Ryo
Nishimura Kazumasa
Brinks Hofer Gilson & Lione
Miller Brian E
TDK Corporation
LandOfFree
Tunneling magnetic sensing element including enhancing 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 Tunneling magnetic sensing element including enhancing layer..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tunneling magnetic sensing element including enhancing layer... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2766359