SPIN VALVE TYPE HUGE MAGNETORESISTANCE EFFECT ELEMENT, MAGNETORESISTANCE EFFECT TYPE MAGNETIC HEAD AND THEIR MANUFACTURING METHODS

摘要

PROBLEM TO BE SOLVED: To improve a sensitivity, to avoid an output loss, to improve output characteristics and to improve reliability by an improvement in a radiating effect by reducing a dead region due to the presence of a hard magnetic layer for applying a bias magnetic field to be imparted to a free magnetic layer, and enabling a magnetic field to be rotated with good sensitivity by a signal magnetic field from an exterior in a spin valve type huge magnetoresistance effect element and a magnetic head.;SOLUTION: The spin valve type huge magnetoresistance effect element comprises a first antiferromagnetic layer 1, a fixed magnetic layer 2 connected to the first antiferromagnetic layer 1, a nonmagnetic conductive layer 3, a free magnetic layer 4 changing in the magnetizing direction by the signal magnetic field, and a second antiferromagnetic spacer layer 22 to be long distance exchange connected to the magnetic layer 4 via the spacer layer 21. A direction of an easy axis of magnetization due to the exchange connection of the first antiferromagnetic layer 21 to the fixed magnetic layer connected thereto is set to perpendicularly cross with an easy direction of magnetization of the long distance exchange connecting magnetic field of the second layer 22 to the magnetic layer 4 to impart a predetermined bias magnetic field to the layer 4, and an influence of the application of the bias magnetic field to the high magnetic layer is reduced.;COPYRIGHT: (C)2002,JPO