Process for manufacturing a magnetic read head

Details Process for manufacturing a magnetic read head Process for manufacturing a magnetic read head

2005-01-18

2005-01-18

Tugbang, A. Dexter (Department: 3729)

Metal working

Method of mechanical manufacture

Electrical device making

C029S603070, C029S603090, C029S603140, C360S324100, C360S324110, C360S324120, C427S127000, C427S128000

Reexamination Certificate

active

06842969

ABSTRACT:
In magnetic read heads based on bottom spin valves the preferred structure is for the longitudinal bias layer to be in direct contact with the free layer. Such a structure is very difficult to manufacture. The present invention overcomes this problem by using a liftoff technique to form, on the free layer, a buffer layer having a trapezoidal cross-section, sloping sidewalls, and a central area of uniform thickness, whose width defines the read track. A suitable bias layer and leads are then deposited on this buffer layer.

REFERENCES:
patent: 5637235 (1997-06-01), Kim et al.
patent: 6185078 (2001-02-01), Lin et al.
patent: 6208491 (2001-03-01), Pinarbasi
patent: 6266218 (2001-07-01), Carey et al.
patent: 6275362 (2001-08-01), Pinarbasi
patent: 6308400 (2001-10-01), Liao et al.
patent: 6310751 (2001-10-01), Guo et al.
patent: 6338899 (2002-01-01), Fukuzawa et al.
patent: 6385017 (2002-05-01), Min et al.
patent: 6636396 (2003-10-01), Gill
patent: 6650512 (2003-11-01), Gill
patent: 10154618 (1998-06-01), None
“Giant magnetoresistance in CoFe/Cu multilayers with different buffer layers and substrates”; Gangopadhyay, S.; Shen, J.X.; Kief, M.T.; Barnard, J.A.; Parker, M.R.; Magnetics, IEEE Transactions on , vol.: 31 , Issue: 6 , Nov. 1995; pp.:3933-3935.

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