CPP device with a plurality of metal oxide templates in a...

Details CPP device with a plurality of metal oxide templates in a... CPP device with a plurality of metal oxide templates in a...

2011-07-12

2011-07-12

Castro, Angel A. (Department: 2627)

Dynamic magnetic information storage or retrieval

Head

Magnetoresistive reproducing head

Reexamination Certificate

active

07978442

ABSTRACT:
A novel CCP scheme is disclosed for a CPP-GMR sensor in which an amorphous metal/alloy layer such as Hf is inserted between a lower Cu spacer and an oxidizable layer such as Al, Mg, or AlCu prior to performing a pre-ion treatment (PIT) and ion assisted oxidation (IAO) to transform the amorphous layer into a first metal oxide template and the oxidizable layer into a second metal oxide template both having Cu metal paths therein. The amorphous layer promotes smoothness and smaller grain size in the oxidizable layer to minimize variations in the metal paths and thereby improves dR/R, R, and dR uniformity by 50% or more. An amorphous Hf layer may be used without an oxidizable layer, or a thin Cu layer may be inserted in the CCP scheme to form a Hf/PIT/IAO or Hf/Cu/Al/PIT/IAO configuration. A double PIT/IAO process may be used as in Hf/PIT/IAO/Al/PIT/IAO or Hf/PIT/IAO/Hf/PIT/IAO schemes.

REFERENCES:
patent: 7072153 (2006-07-01), Koui et al.
patent: 7177121 (2007-02-01), Kojima et al.
patent: 7280323 (2007-10-01), Sato et al.
patent: 7453672 (2008-11-01), Dieny et al.
patent: 7495870 (2009-02-01), Yuasa et al.
patent: 7782575 (2010-08-01), Tsuchiya et al.
patent: 7821748 (2010-10-01), Fukuzawa et al.
patent: 2003/0053269 (2003-03-01), Nishiyama
patent: 2005/0094317 (2005-05-01), Funayama
patent: 2007/0070556 (2007-03-01), Zhang et al.
patent: 2007/0188936 (2007-08-01), Zhang et al.
patent: 2008/0192388 (2008-08-01), Zhang et al.
patent: 2008/0278864 (2008-11-01), Zhang et al.

Affiliated with

Also associated with

Rating

CPP device with a plurality of metal oxide templates in a... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with CPP device with a plurality of metal oxide templates in a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and CPP device with a plurality of metal oxide templates in a... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2719353