Patent ID: 7159303

Claim:
A manufacturing method of a magnetic head including a first metal layer, a ferromagnetic tunneling effect film and a second metal layer in which said ferromagnetic tunneling effect film includes a first magnetic layer, an intermediate layer constituted by an insulating material, a second magnetic layer, and an anti-ferromagnetic layer for applying a bias magnetic field to one of said first and second magnetic layers, said magnetic head being constituted in such a way that a magnitude of a magnetic field of which a magnetization direction of one of said first and second magnetic layers is changed becomes larger than a magnitude of a magnetic field of which a magnetization direction of the other of said first and second magnetic layers is not changed while a tunnel current flows between said first magnetic layer and said second magnetic layer through said intermediate layer, said method comprising the steps of: stacking said first metal layer, said ferromagnetic tunneling effect film, and said second metal layer in this order on a substrate; and forming said anti-ferromagnetic layer below said one of first and second magnetic layers.