Patent ID: 9558763
Date: 2017-01-31
CPC Classifications: G11B

Claim:
1. A magnetic write apparatus having a media-facing surface (MFS) comprising: a pole including a main portion and an assist portion, the main portion being ferromagnetic, the main portion including a pole tip and at least one side surface having a flare angle from the MFS, the pole tip occupying a first portion of the MFS, the flare angle being nonzero and acute, the assist portion adjoining the main portion and extending from the main portion in a direction having a component parallel to the MFS in a cross-track direction, the assist portion having a front surface facing the MFS and a depth in a depth direction substantially perpendicular to the front surface of not more than three hundred nanometers; at least one side shield occupying a second portion of the MFS and having a back surface, the at least one side shield being between the assist portion and the MFS, the assist portion being conformal with the back surface of the at least one side shield; and a side gap between the main portion of the pole and the at least one side shield; and at least one coil for energizing the pole.