Magnetic sensor using giant magnetoresistive elements and...

Details Magnetic sensor using giant magnetoresistive elements and... Magnetic sensor using giant magnetoresistive elements and...

2008-02-06

2010-11-30

Meeks, Timothy H (Department: 1715)

Coating processes

Magnetic base or coating

Magnetic coating

C427S128000, C427S131000, C427S547000, C427S548000, C427S599000, C360S314000, C360S316000, C360S324000, C360S324100, C360S324110

Reexamination Certificate

active

07842334

ABSTRACT:
A magnetic sensor includes a single substrate, a conventional GMR element formed of a spin-valve film including a single-layer-pinned fixed magnetization layer, and a SAF element formed of a synthetic spin-valve film including a plural-layer-pinned fixed magnetization layer. When the spin-valve film intended to act as the conventional GMR element and the synthetic spin-valve film intended to act as the SAF element are subjected to the application of a magnetic field oriented in a single direction at a high temperature, they become giant magnetoresistive elements whose magnetic-field-detecting directions are antiparallel to each other. Since films intended to act as the conventional GMR element and the SAF element can be disposed close to each other, the magnetic sensor which has giant magnetoresistive elements whose magnetic-field-detecting directions are antiparallel to each other can be small.

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