Method of manufacturing integrated spin valve head

Details Method of manufacturing integrated spin valve head Method of manufacturing integrated spin valve head

2007-01-16

2007-01-16

Tugbang, A. Dexter (Department: 3729)

Metal working

Method of mechanical manufacture

Electrical device making

C029S603130, C029S603150, C029S603180, C360S324100, C427S128000, C427S131000

Reexamination Certificate

active

11011995

ABSTRACT:
Currently, in a process of manufacturing a top spin valve structure, the shield-to-shield separation of a spin valve head cannot be below about 800 Å, mainly due to sensor-to-lead shorting problems. This problem has now been overcome by inserting a high permeability, high resistivity, thin film shield on the top or bottom (or both) sides of the spin valve sensor. A permeability greater than about 500 is required together with a resistivity about 5 times greater than that of the free layer and an MrT value for the thin film shield that is 4 times greater than that of the free layer.

REFERENCES:
patent: 5422571 (1995-06-01), Gurney et al.
patent: 5608593 (1997-03-01), Kim et al.
patent: 5668688 (1997-09-01), Dykes et al.
patent: 5777542 (1998-07-01), Ohsawa et al.
patent: 5828527 (1998-10-01), Takada et al.
patent: 5978182 (1999-11-01), Kanai et al.
patent: 5999379 (1999-12-01), Hsiao et al.
patent: 6228276 (2001-05-01), Ju et al.
patent: 6385017 (2002-05-01), Min et al.
patent: 10-302227 (1998-11-01), None
Ishi et al., “Anisotropic Control in Fabrication Process for NiMn Spin-Valve Duel Element Heads”, IEEE Transactions on Magnetics, vol. 34, No. 4, Jul. 1998, pp. 1411-1413.
“Greater Than 14 Gb/in2Spin Valve Heads”, H.C. Tong et al, IEEE Trans. on Magnetics, vol. 35, No. 5, Sep. 1999, pp. 2574-2579.
“Readback Signal Comparison Between DSMR+SAL/MR Heads”, Yimin Guo et al., IEEE Trans. on Magnetics, vol. 32, No. 5, Sep. 1996, pp. 3437-3439.

Affiliated with

Also associated with

Rating

Method of manufacturing integrated spin valve head does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of manufacturing integrated spin valve head, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of manufacturing integrated spin valve head will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3752095