EXCHANGE COUPLING FILM, METHOD FOR MANUFACTURING EXCHANGE COUPLING FILM AND MAGNETISM DETECTION ELEMENT USING EXCHANGE COUPLING FILM

摘要

PROBLEM TO BE SOLVED: To provide an exchange coupling film capable of tightly fixing the magnetic direction of a fixed magnetic layer in one direction, a method for manufacturing the exchange coupling film and a magnetism detection element using the exchange coupling film.;SOLUTION: When areas A1, B1 including Cr elements are formed in an antiferromagnetic layer 4 and a fixed magnetic layer 3, an exchange coupling magnetic field (Hex) generated between both the layers 4, 3 is increased. Therefore, the exchange coupling magnetic field (Hex) generated between a 1st magnetic layer 13 and the antiferromagnetic layer 4 can be increased and a coupling magnetic field due to RKKY interaction can be also increased, so that a unidirectional exchange bias magnetic field (Hex*) in the fixed magnetic layer 3 can be suitably increased as compared with a conventional method.;COPYRIGHT: (C)2004,JPO