| 摘要 |
PURPOSE:To obtain a magnetic thin film head having a magnetic flux throttle form easily in mass production, by performing a process for adhesion of a magnetic thin film and a work process for formation of a groove part twice respectively. CONSTITUTION:The first magnetic thin film 11 is adhered onto a substrate 10 consisting of a nonmagnetic material by vapor-deposition or the like, and a V- shaped first groove part 12 which is deep enough to reach the surface of the substrate 10 is formed on the thin film 11 by the cutting work due to a highly hard cutting tool or the like. A nonmagnetic thin film 13 consisting of SiO2 or the like is adhered continuously on the surface of the first thin film 11 and the inside face of the groove part 12 by sputtering or the like. The second thin film 14 similar to the thin film 11 is adhered onto the surface of the thin film 13 in accordance with the form of the first thin film 11 by vapor-deposition or the like, and the second groove part 15 having a U-shaped section which is deep enough to reach the surface of the first thin film 11 in the side of a main magnetic path 11a is formed on the second thin film 14. After a nonmagnetic material 16 is covered on the surface of this head core, a hole 17 for winding is punched by the ultrasonic processing or the like. |
