MAGNETORESISTANCE EFFECT LAMINATED FILM AND MAGNETIC SENSOR, MAGNETIC HEAD, OR MAGNETIC RECORDER USING IT

摘要

PROBLEM TO BE SOLVED: To provide a technique for improving the performance of a magnetic recorder by controlling the crystal structure of the interface between an MnPt alloy thin film and a ferromagnetic thin film for improving the exchange coupling bias magnetic field of a ferromagnetic antiferromagnetic interface. SOLUTION: A magnetoresistance effect laminated film is formed by laminating a ferromagnetic thin film containing at least one or more kinds of metals selected from among transition metals of iron, cobalt, and nickel and an alloy thin film containing manganese and platinum upon another and the crystal structure of the alloy thin film becomes cubic near the boundary between the laminated layers and tetragonal at a distant portion from the boundary.