| 摘要 |
A thin-film magnetic head has a recording head element that includes a lower magnetic pole, a recording gap, and an upper magnetic pole facing to the lower magnetic pole through the recording gap. The upper magnetic pole has a first width which is constant in a region from a first edge (lower edge) of the upper magnetic pole at the side of the recording gap to a point at a predetermined distance from the first edge, and has a second width at a second edge (upper edge) of the upper magnetic pole at the opposite side of the recording gap. The second width is larger than the first width.
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