Dynamic magnetic information storage or retrieval – Head – Magnetoresistive reproducing head
Reexamination Certificate
2006-10-27
2009-08-25
Evans, Jefferson (Department: 2627)
Dynamic magnetic information storage or retrieval
Head
Magnetoresistive reproducing head
Reexamination Certificate
active
07580231
ABSTRACT:
A magneto-resistive element has a pinned layer, a free layer, and a spacer layer which is sandwiched between the pinned layer and the free layer. The spacer layer is made of copper. The magneto-resistive element is configured such that sense current is applied in a direction that is perpendicular to layer surfaces. The free layer has: a nonmagnetic layer that includes copper as a main component; and ternary alloy layers each including cobalt (Co), iron (Fe), and nickel (Ni), the ternary alloy layers being disposed on both sides of the nonmagnetic layer. The ternary alloy layer includes nickel and iron at a composition ratio in which a ratio x of an atomic percentage of nickel to a total atomic percentage of nickel and iron is 27%≦x≦45%.
REFERENCES:
patent: 6905780 (2005-06-01), Yuasa et al.
patent: 6927952 (2005-08-01), Shimizu et al.
patent: 2005/0152077 (2005-07-01), Yuasa et al.
patent: 2005/0195534 (2005-09-01), Gill
patent: 2005/0243477 (2005-11-01), Gill
patent: 2005/0270702 (2005-12-01), Komagaki et al.
patent: 2007/0230067 (2007-10-01), Jogo et al.
patent: 2007/0268743 (2007-11-01), Daughton et al.
patent: A-2001-298226 (2001-10-01), None
patent: A-2003-86861 (2003-03-01), None
patent: 2003-133614 (2003-05-01), None
patent: 2003-152239 (2005-05-01), None
Miyauchi Daisuke
Mizuno Tomohito
Evans Jefferson
Oliff & Berridg,e PLC
TDK Corporation
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