Brinks Hofer Gilson & Lione
CPP magnetic detecting device containing NiFe alloy on free layer thereof
A magnetic detecting device having a large ΔRA value is provided. A free magnetic layer has a three layer structure in which a CoFe layer, a NiaFeb alloy layer (here, a and b are represented by at %, and satisfy the relationship of 47≦a≦77 and a+b=100), and a CoFe layer are laminated.In addition, pinned magnetic layers have heusler alloy layers, which are made of a heusler alloy such as a Co2MnGe alloy. Accordingly, the product ΔRA of a magnetic resistance variation ΔR of the magnetic detecting device and an area A of the device can have a value of 5 mΩμm2 more.
Alps Electric Co., Ltd.
H G G B H H G H
H01F G11B G01R B82Y H01F H01L G11B H01F
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Naoya Yosuke Masamichi Masahiko
Hasegawa Ide Saito Ishizone