Beyer Law Group LLP
Current sensor
A current sensor includes a substrate, a conductive body being provided above the substrate and extending in one direction, and magnetoresistance effect elements being provided between the substrate and the conductive body and outputting output signals owing to an induction magnetic field from a current to be measured being conducted through the conductive body, wherein each of the magnetoresistance effect elements has a laminated structure including a ferromagnetic fixed layer whose magnetization direction is fixed, a non-magnetic intermediate layer, and a free magnetic layer whose magnetization direction fluctuates with respect to an external magnetic field, the ferromagnetic fixed layer is a self-pinned type formed by antiferromagnetically coupling a first ferromagnetic film and a second ferromagnetic film through an antiparallel coupling film, the Curie temperatures of the first ferromagnetic film and the second ferromagnetic film are approximately equal, and a difference between the magnetization amounts thereof is substantially zero.
ALPS GREEN DEVICES CO., LTD.
G H H G B H G
G01R H01F H01L G01R B82Y H01L G01R
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Masahiro Yosuke Kenji Yoshihiro Mitsuo Masamichi Akira
Iizuka Ide Ichinohe Nishiyama Aratono Saito Takahashi