| 摘要 |
PROBLEM TO BE SOLVED: To make compatible both narrow track width for achieving high TPI and thick upper magnetic pole for generating a sufficient recording magnetic field. SOLUTION: A thin recording gap film 12 of several 100 nm is formed to have a desired track width, and upper and lower magnetic poles 17 and 11 are connected at both end parts C thereof. A magnetic flux flows through the upper and lower magnetic poles connected at both ends of the recording gap film, and the magnetic field is confined in the magnetic pole to set a recording gap width to be an effective recording track width. Since the thin recording gap film is formed, the recording track width is set with high accuracy. In addition, the upper magnetic pole is set wider by several 100 nm than the desired track width.
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