| 摘要 |
A recording head has a bottom pole layer and a top pole layer that include pole portions, and a recording gap layer placed between the pole portions. The recording head further has a thin-film coil placed between the bottom and top pole layers, the coil being insulated from the pole layers. The bottom pole layer includes a first layer and a second layer. The first layer is located in a region facing toward the thin-film coil, an insulating layer being placed between the first layer and the coil. The second layer is connected to a surface of the first layer facing toward the thin-film coil. The second layer includes the pole portion and defines a throat height. The thin-film coil is located on a side of the second layer. The first layer has a width that decreases as the distance from an air bearing surface decreases.
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