Patent ID: 6970332
Filing Date: 2005-11-29
Classification: B82Y,G11B

Abstract:
1. A magnetoresistive head, comprising: a spin-valve film as a magnetic sensor element for detecting magnetic signals while in contact with a magnetic recording medium, said spin-valve film having a structure in which an anti-ferromagnetic layer, a pinned layer in which the direction of magnetization is pinned in a predetermined direction by an exchange-coupling magnetic field at work between itself and said anti-ferromagnetic layer, a free layer in which the direction of magnetization changes in accordance with an external magnetic field, and a non-magnetic layer for magnetically isolating said pinned layer and said free layer are layered, wherein said spin-valve film has a corrosion potential relative to a standard hydrogen electrode of +0.4. [V vs. SHE] or greater when immersed in a NaCl solution of a concentration of 0.1 mol/L, wherein said non-magnetic layer comprises CuAu, and wherein the composition ratio of Cu:Au is (100-a said magnetoresistive head detects magnetic signals while in contact with a tape-formed magnetic recording medium.