| 摘要 |
PURPOSE:To reduce size and to improve efficiency and productivity by providing a coil to the end face at the bottom end of a core, providing a connecting member consisting of a magnetic material and magnetically connecting thin magnetic alloy films provided on the inside surfaces of a C core and I core through the central part of the coil. CONSTITUTION:The coil 7 is provided by a patterning or lithographic means on the thin magnetic alloy film 2a provided on the bottom end face of the I core 2. More specifically, the coil is formed by successively laminating, for example, an SiO2 insulating film, Cu film and photoresist film on the thin magnetic alloy film 2a, and exposing a spiral coil pattern thereto, then immersing the core into an etching soln. The coil surface is coated with the SiO2 insulating film except terminal parts. A connecting member 8 is formed to have an L- shaped longitudinal section by a magnetic material having the saturation flux density equal to or higher than the saturation flux density of the thin magnetic alloy film. The member 8 is so disposed as to magnetically connect the thin films 1a and 2a provided to the C core 1 and the I core 2 through the central part of the coil 7. The magnetic circuit having a magnetic gap 4 is thereby formed and the magnetic head provided with the coil 7 is constituted.
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