Write head with coil structure aligned with yoke

摘要

A write head having a main pole having a pole tip proximate an air bearing surface (ABS), the main pole having a leading side and a trailing side. The write head also includes a yoke having a yoke tip recessed from the ABS, and a helical coil wrapped around the main pole and the yoke. The helical coil has a first turn with its front edge at least substantially aligned with the yoke tip.

主权项

1. A write head comprising:
a main pole having a pole tip, a leading side and a trailing side; a trailing yoke having a yoke tip; and a coil structure comprising at least two active turns present on the leading side and the trailing side around the main pole and the yoke, and one dummy turn, with a first turn of the coil structure on the trailing side having its front edge no more than 100 nm from the yoke tip, and with the dummy turn located closer to a back via than to the pole tip.