| 摘要 |
PURPOSE:To easily make a track form in a narrow shape, and to make a track width itself form with high accuracy, by forming a lower part magnetic core in a cross-sectional rectangular shape, embedding the lower part magnetic core in a substrate, and exposing the plane on the short side of the core on the substrate. CONSTITUTION:The width of the lower part magnetic core 10 embedded in a head substrate 7 with structure in which a second nonmagnetic substrate 9 is laminated on a first nonmagnetic substrate 8, and the cross-section of which is formed in a rectangular shape, that is the length of the short side is formed <=10mum, and the plane of the short side on one side is exposed on the substrate 7 by sandwiching both side planes with the nonmagnetic substrate 9 in the head substrate 7, and it is flushed with the upper plane of the substrate 7. In such way, in the titled thin film magnetic head, the gap width of the head is decided by the gap width of the lower magnetic core 10, that is, the length of the short side, thereby, it is possible not only to constitute it smaller than the processing width of etching of an upper part magnetic core 14 considerably, but, to prevent the gap width from being affected by the thickness of the upper part magnetic core 14 even when it is formed in a thick shape considerably. |
