| 摘要 |
A method for forming a magnetic head to solve the curved electrodeposited write gap layer problem by initially fabricating the write gap layer to be wider than the intended final P2 pole tip width. Ion milling the sides of the P2 pole tip structure is then performed to remove the curved outer portions of the write gap layer and to thereby fabricate a P2 pole tip having the desired pole tip width. Specifically, following the electrodepositing of the write gap layer and P2 pole tip thereon, an ion milling step is conducted to remove material from the sidewalls of the P2 pole tip including the write gap layer. The ion milling step is preferably conducted utilizing a broad beam ion milling device that is directed to the surface of the substrate upon which the magnetic heads are being fabricated. Preferably, the ion beam is directed at an angle of approximately 70° away from normal to the substrate surface such that milling of the head side surfaces is efficiently accomplished. Following the ion milling step the curved edges of the write gap layer are removed and the P2 pole tip width is narrowed to its desired dimension. Thereafter, further well known fabrication steps are conducted to complete the fabrication of the magnetic head.
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