Brinks Hofer Gilson & Lione
CPP mode magnetic sensing element including a multilayer free layer biased by an antiferromagnetic layer
In a CPP magnetic sensing element, a free magnetic layer has a laminated ferrimagnetic structure. Since the physical thickness of the free magnetic layer is increased, the product of a change in resistance ΔR and an area A can be improved and read output can be improved. Since the magnetic thickness is decreased, the demagnetizing field of the free magnetic layer is weakened, and it is possible to stably apply a continuous bias with a proper magnitude from the second of two antiferromagnetic layers to the first free magnetic sublayer. Therefore, it is possible to fabricate a magnetic sensing element with satisfactory read sensitivity η.
Alps Electric Co., Ltd.
B G G B G G
B82Y G11B G11B B82Y G01R G11B
inventional inventional additional inventional inventional inventional
Masamichi
Saito