| 摘要 |
PURPOSE:To improve the performance of the titled head by horizontally moving a duumy pattern having the same shape as a magnetic thin film on the contour of the magnetic head to form the magnetic film and observing the gap depth as a stepped shape with a simple method. CONSTITUTION:The magnetic thin film 3 and a thin film 4 are formed on the substrate 1 of the magnetic head and the same magnetic thin film 3' as the magnetic film 3 is formed on the contour part 2 of the magnetic head. The magnetic film 3 is horizontally moved so that the contour 2 is placed at the center, and the positional relation of the magnetic film 3' to the contour 2 is retained. When the contour 2 is taken out by machining, the magnetic film 3' can be observed from the direction as shown by the arrow 5 as a stepped shape. The magnetic film 3' is formed with an insulating film 10, the lower magnetic film 9, a nonmagnetic gap film 12, an interlayer insulating film 8, the upper magnetic film 7, and an insulating protective film 6 on the substrate 1. The gap depth 11 is easily measured with a tool maker's microscope, etc., with a polished surface 13 as a reference, and the performance of the magnetic head is improved. |
