Magnetic write head with tapered side gap for reduced far track interference

摘要

A magnetic write head for magnetic data recording that has a magnetic write pole and a magnetic side shield structure, wherein the flare angle and bevel angle of the write pole are different from the flare angle and bevel angle of the magnetic side shield structure. The magnetic side shield has a flare angle that is greater than that of the write pole, and has a bevel angle that is smaller than that of the write pole. This advantageously provides a strong write field, while also preventing adjacent track and far track interference. The write head can include a bi-layer non-magnetic side gap structure, wherein one layer of the bi-layer side gap structure has a uniform thickness and the other layer has a non-uniform thickness.

主权项

1. A magnetic write head, comprising:
a magnetic write pole having a first bevel angle and a first flare angle; a magnetic side shield structure having a second bevel angle and a second flare angle; and a non-magnetic gap structure formed between the magnetic side shield structure and the magnetic write pole; wherein the first bevel angle is greater than the second bevel angle and the second flare angle is greater than the first flare angle; and wherein the write head has a first region located near a media facing surface and a second region that is recessed from the media facing surface and wherein the flare angle of the write pole is 20-30 degrees in the first region and 30-40 degrees in the second region and the flare angle of the side shield is 30-40 degrees in the first region and 65-75 degrees in the second region.