Method for protecting against corrosion in a GMR sensor by...

Details Method for protecting against corrosion in a GMR sensor by... Method for protecting against corrosion in a GMR sensor by...

2008-06-05

2010-11-09

Kim, Paul D (Department: 3729)

Metal working

Method of mechanical manufacture

Electrical device making

C029S603070, C029S603130, C029S603150, C029S603180, C216S062000, C216S065000, C216S066000, C360S121000, C360S122000, C360S317000, C451S005000, C451S041000

Reexamination Certificate

active

07827674

ABSTRACT:
A method for providing a giant magneto-resistive (GMR) sensor for use in sensing magnetic flux is provided. The method comprises positioning a layer of Cu material between first and second layers of a specified ferromagnetic material. The respective end surfaces of the Cu layer and the first and second layers are initially located in a common plane and in a co-planar relationship with one another. The method further comprises removing an amount of material from the copper layer to form a new end surface thereof that is selectively spaced apart from the common plane and applying a protective coating to the new end surface of the Cu layer to inhibit corrosion of the Cu layer.

REFERENCES:
patent: 4145567 (1979-03-01), Bahder et al.
patent: 6989974 (2006-01-01), Tetsukawa et al.
patent: 7174622 (2007-02-01), Meyer et al.

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