Patent ID: 6747852
Filing Date: 2004-06-08
Classification: B82Y,G01R,G11B,H04R,Y10T

Abstract:
A magnetoresistance sensor structure comprising:a magnetoresistance sensor having a sensor surface plane, a transverse direction lying in the sensor surface plane, and a longitudinal direction lying perpendicular to the transverse direction and in the sensor surface plane, the magnetoresistance sensor comprising: a transverse biasing stack comprising: a transverse pinning layer made of a transverse-pinning-layer antiferromagnetic material, and a transverse pinned layer structure overlying the transverse pinning layer, a spacer layer overlying the transverse pinned layer structure, a sensing stack overlying the spacer layer, and an electrically insulating decoupling layer overlying the sensing stack; and a longitudinal biasing stack overlying the magnetoresistance sensor, the longitudinal biasing stack comprising: a longitudinal pinned layer, and a longitudinal pinning layer overlying the longitudinal pinned layer and made of a longitudinal-pinning-layer antiferromagnetic material.