Magnetoresistive head in which an interlayer coupling field applied to a free magnetic layer is reduced

摘要

5 There is disclosed a magnetoresistive head in which an interlayer coupling field Hin applied to a free magnetic layer is minimized. The magnetoresistive head is provided with a magnetoresistive film including: a first antiferromagnetic layer 2; a pinned magnetic layer 3 formed on the first antiferromagnetic layer 2 and provided with magnetization whose direction is fixed; a first nonmagnetic layer 4 formed on the pinned magnetic layer 3; a free magnetic layer 5 formed on the first nonmagnetic layer 4 and provided with magnetization whose direction changes in accordance with an external magnetic field; a second nonmagnetic layer 6 formed on the free magnetic layer 5; and a second antiferromagnetic layer 7, formed on the second nonmagnetic layer 6, for applying a bias magnetic field generated by static interlayer coupling and directed in a direction opposite to magnetization direction of the pinned magnetic layer 3 to the free magnetic layer 5.