Magnetoresistive Sensor


Ontology type: sgo:Patent     


Patent Info

DATE

N/A

AUTHORS

Ferreira, Ricardo Alexandre de Matos Antunes , PAZ, Elvira Perez de Colosia

ABSTRACT

A magnetoresistive sensor is provided. The magnetoresistive sensor comprises a magnetic sensing layer, a magnetic reference layer, and a tunnel barrier layer between the magnetic sensing layer and the magnetic reference layer. The magnetoresistive sensor also comprises a sensing exchange layer having a layer of anti-ferromagnetic material. The sensing exchange layer is exchange coupled with the magnetic sensing layer. Also, the magnetoresistive sensor still further comprises a reference exchange layer having a layer of anti-ferromagnetic material. The reference exchange layer is exchange coupled with the magnetic reference layer. Moreover, the magnetoresistive sensor is configured such that in the absence of an external magnetic field, an exchange bias pinning the reference layer lies along a reference direction, an exchange bias pinning the sensing layer lies along a first direction that is orthogonal to the reference direction, and a magnetic anisotropy of the sensing layer is parallel to the first direction. More... »

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