Patent ID: 6215631
Filing Date: 2001-04-10
Classification: B82Y,G01R,G11B,H01F,H01L

Abstract:
A magnetoresistive effect film comprising, at least as laminated elements:an antiferromagnetic thin film;a first magnetic thin film that is in contact with said antiferromagnetic thin film;a non-magnetic thin film that is in contact with said first magnetic thin film; anda second magnetic thin film that is in contact with said non-magnetic thin film,a bias magnetic field of said antiferromagnetic thin film Hr and a coercivity of said second magnetic thin film Hc2 being such that the condition Hc2<Hr is satisfied, said antiferromagnetic thin film being formed by the lamination of a nickel oxide film and an iron oxide film having a thickness of 20 to 100 .ANG., and the composition ratio of oxygen with respect to nickel in said nickel oxide film is 0.9 to 1.1.