MAGNETIC SENSOR, METHOD FOR MANUFACTURING MAGNETIC SENSOR, AND CURRENT SENSOR

WIPO Patent Application WO/2015/146593

A1

Provided is a magnetic sensor (1) which is equipped with: a magnetoresistance element (11) wherein fixed magnetic layers (21) are stacked on a free magnetic layer (23) with a nonmagnetic material layer (22) therebetween; and an anti-ferromagnetic layer (24) on the opposite side of the free magnetic layer from the side facing the nonmagnetic material layer, said anti-ferromagnetic layer (24) generating an exchange coupling bias with the free magnetic layer to align the direction of magnetization of the free magnetic layer in a predetermined direction in a magnetization-variable state. A ferromagnetic layer (25) is disposed on the opposite side of the anti-ferromagnetic layer from the side facing the free magnetic layer and generates an exchange coupling bias with the anti-ferromagnetic layer to align the direction of magnetization of the same in a predetermined direction in a magnetization-variable state. The direction of magnetization based on the exchange coupling bias generated in the free magnetic layer is a direction that is equal to the direction of magnetization based on the exchange coupling bias generated in the ferromagnetic layer. The ferromagnetic layer can impart to the free magnetic layer a reflux magnetic field having a component that is in a direction along a sensitive axis (D2).

IDE YOSUKE (JP)
SAITO MASAMICHI (JP)

PCT/JP2015/057200

October 01, 2015

March 11, 2015

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ALPS ELECTRIC CO LTD (JP)

H01L43/08; G01R15/20; G01R33/09; H01L43/12

WO2012081377A1

2012-06-21

JP2004206839A	2004-07-22
JP2001357505A	2001-12-26
JP2003536267A	2003-12-02

See also references of EP 3125319A4

NOZAKI, Teruo (JP)
Teruo Nozaki (JP)

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