Dynamic magnetic information storage or retrieval – Head – Magnetoresistive reproducing head
Reexamination Certificate
2005-11-08
2009-06-02
Klimowicz, William J (Department: 2627)
Dynamic magnetic information storage or retrieval
Head
Magnetoresistive reproducing head
Reexamination Certificate
active
07542249
ABSTRACT:
Two embodiments of a GMR sensor of the bottom spin valve (BSV) spin filter spin valve (SFSV) type are provided, together with methods for their fabrication. In one embodiment, the sensor has an ultra thin (<20 angstroms) single free layer and a composite high-conductance layer (HCL), providing high output, low coercivity and positive magnetostriction. In a second embodiment, the sensor has a composite free layer and a single HCL, also having high output, low coercivity and positive magnetostriction. The sensors are capable of reading densities exceeding 60 Gb/in2.
REFERENCES:
patent: 6201671 (2001-03-01), Pinarbasi
patent: 6208492 (2001-03-01), Pinarbasi
patent: 6222707 (2001-04-01), Huai et al.
patent: 6338899 (2002-01-01), Fukuzawa et al.
patent: 6400536 (2002-06-01), Gill
patent: 6404606 (2002-06-01), Pinarbasi
patent: 6785954 (2004-09-01), Horng et al.
patent: 6993827 (2006-02-01), Horng et al.
patent: 7042684 (2006-05-01), Horng et al.
patent: 7325295 (2008-02-01), Horng et al.
patent: 2006/0117555 (2006-06-01), Horng et al.
patent: 2006/0181815 (2006-08-01), Horng et al.
patent: 2000331319 (2000-11-01), None
patent: 2000331320 (2000-11-01), None
patent: 2001126219 (2001-05-01), None
patent: 2002208120 (2002-07-01), None
HT-02-007/009, U.S. Appl. No. 10/308,597, filed Dec. 3, 2002, “Novel Seed Layers for Fabricating Spin Valve Heads for Ultra-High Density Recordings,” assigned to the same assignee.
HT-02-025, U.S. Appl. No. 10/460,088, filed Jun. 12, 2003, “A Novel Structure/Method to Form Bottom Spin Valves for Ultra-High Density”, assigned to the same assignee.
“Spin Filter Spin Valve Heads with Ultra thin Co Fe Free Layers”, by H. Iwasaki et al., Abstract BA-04, 1999 Intermag. Conference.
Horng Cheng T.
Tong Ru-Ying
Ackerman Stephen B.
Headway Technologies Inc.
Klimowicz William J
Saile Ackerman LLC
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