| 摘要 |
A magneto-resistance effect type magnetic head is disclosed which is high in sensitivity and corrosion resistance. In the head, a spin valve film acting as an magnetic sensing device for detecting a magnetic signal on a magnetic recording medium. The spin valve film is structured such that an antiferromagnetic layer, a fixed magnetization layer whose magnetization direction is fixed by an exchange coupling magnetic field acting between the layers, a free magnetization layer whose magnetization direction varies in response to an external magnetic field, and a nonmagnetic layer for magnetically isolating the fixed magnetization layer and the free magnetization layer are laminated. The nonmagnetic layer is formed from a conductive layer, an interface layer formed on an interface between the fixed magnetization layer and conductive layer, and a second interface layer formed on an interface between the conductive layer and free magnetization layer.
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