Stock material or miscellaneous articles – Magnetic recording component or stock – Magnetic head
Reexamination Certificate
2007-07-10
2007-07-10
Bernatz, Kevin M. (Department: 1773)
Stock material or miscellaneous articles
Magnetic recording component or stock
Magnetic head
C428S811200, C428S811500, C428S814000
Reexamination Certificate
active
10880574
ABSTRACT:
A magneto-resistive device is provided for contributing to a higher MR ratio and a reduced cleaning time for cleaning the surface of a cap layer. In the magneto-resistive device, a cap layer which serves as a protection layer is formed on a free layer which is the topmost layer of a magneto-resistive layer constituting a TMR devise. An upper electrode which is additionally used as an upper magnetic shield is electrically connected to the free layer through an upper metal layer. The cap layer comprised of a two-layer film made up of a conductive layer closer to the free layer and a topmost conductive layer. The conductive layer closer to the free layer is made of a material having higher oxygen bond energy than Ru, such as Zr, Hf, or the like. The topmost conductive layer is made of a material having lower oxygen bond energy, such as a noble metal or the like.
REFERENCES:
patent: 5940237 (1999-08-01), Takagi
patent: 6195239 (2001-02-01), Araki et al.
patent: 6452385 (2002-09-01), Shimazawa et al.
patent: 2001/0026424 (2001-10-01), Kamata et al.
patent: 2002/0024778 (2002-02-01), Xue et al.
patent: 2002/0135951 (2002-09-01), Kasahara et al.
patent: 2003/0039080 (2003-02-01), Kagami et al.
patent: 2003/0049389 (2003-03-01), Tsunekawa et al.
patent: 2003/0058587 (2003-03-01), Hasegawa et al.
patent: 2004/0057164 (2004-03-01), Parker et al.
patent: 2005/0041339 (2005-02-01), Horng et al.
patent: 2005/0167770 (2005-08-01), Fukuzawa et al.
patent: 2006/0114615 (2006-06-01), Pinarbasi
patent: A 2000-228003 (2000-08-01), None
patent: A 2002-100012 (2002-04-01), None
patent: A 2002-216321 (2002-08-01), None
patent: A 2002-270921 (2002-09-01), None
patent: A 2003-060262 (2003-02-01), None
patent: A 2003-067903 (2003-03-01), None
patent: A 2003-152239 (2003-05-01), None
patent: A 2003-163330 (2003-06-01), None
patent: A 2003-174217 (2003-06-01), None
patent: A 2003-183838 (2003-07-01), None
patent: A 2003-204092 (2003-07-01), None
patent: A 2004-063592 (2004-02-01), None
patent: WO 02/078021 (2002-10-01), None
Kagami Takeo
Miura Satoshi
Takahashi Norio
Uesugi Takumi
Bernatz Kevin M.
TDK Corporation
LandOfFree
Magneto-resistive device, and magnetic head, head suspension... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Magneto-resistive device, and magnetic head, head suspension..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magneto-resistive device, and magnetic head, head suspension... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3729854