Patent ID: 6025978
Filing Date: 2000-02-15
Classification: G11B

Abstract:
A composite type thin-film magnetic head, comprising:an inductive head used for recording, the inductive head having two magnetic film layers facing each other across a magnetic gap; anda magneto-resistive head used for playback adjacent to the inductive head, the magneto-resistive head having a magneto-resistive element, wherein the inductive head and the magneto-resistive head are laminated, wherein a magnetic film layer adjacent to the magneto-resistive element has a saturation flux density on a gap side of the magnetic film layer decreasing continuously toward a magneto-resistive element side of the magnetic film layer, wherein the magnetic film layer adjacent to the magneto-resistive element comprises an alloy of nickel and iron, and wherein a nickel concentration of the magnetic film layer decreases smoothly from the magneto-resistive element side toward the gap side of the magnetic film layer.