| 摘要 |
PURPOSE:To decrease wiring resistance and to improve the recording efficiency and reproduction efficiency of a magnetic head by using copper or copper alloy for a thin film coil. CONSTITUTION:A thin film coil circuit 6 for flowing recording current is spirally laminated on a lower magnetic material layer 1 consisting of ferrite or the like having soft magnetism by a means for forming thin film such as a method for depositing a thin film. A quartz glass layer 4 is laminated thereon to insulate the coil wiring of copper or copper alloy and to form a head gap 8 and an upper magnetic material layer 3 consisting of ''Permally'' or the like constituting an upper magnetic pole is formed thereon. A low melting glass layer 4 used for melt-sticking a protective plate and for filling the gap is formed atop the pole 3 and beneath the circuit 6. A protective film 5 formed of crystallized glass or the like is laminated on the uppermost and the thin film magnetic head is thus constituted. |
