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Abstract

A method of manufacturing a thin film magnetic head includes forming a recording gap layer of a non-alumina base nonmagnetic material on a lower magnetic pole layer, the lower magnetic pole layer being composed of materials that are milled at the same rate. An upper magnetic pole layer is formed on the recording gap layer, and a single piece of equipment is used to trim the lower magnetic pole layer and pattern the recording magnetic gap layer such that the lower magnetic pole layer has a width that is substantially the same as that of the upper magnetic pole layer. The recording gap layer and the upper and lower half-gap layers are then removed over a region of the underlying substrate. Prescribed areas of tan air-bearing surface (ABS) are then etched to form a slider shape having a protruding part and a depressed part, the ABS and the side surface having a common edge such that the depressed part along the common edge extends into, but not beyond, the region.

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First Claim