TMR sensor with oxidized alloy barrier layer and method for...

Electrical resistors – Resistance value responsive to a condition – Magnetic field or compass

Reexamination Certificate

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C338S03200R

Reexamination Certificate

active

10771959

ABSTRACT:
A tunneling magnetoresistive stack includes a first ferromagnetic layer, a tunnel barrier layer on the first ferromagnetic layer, and a second ferromagnetic layer on the tunnel barrier layer. The tunneling magnetoresistive stack exhibits a negative exchange coupling between the first ferromagnetic layer and the second ferromagnetic layer indicating that the tunneling magnetoresistive stack has a high quality tunnel barrier layer.

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