Asymmetric MAMR head with self-aligned spin torque oscillator along flare edge for shingled magnetic recording

摘要

The present disclosure generally relates to the structure of a perpendicular magnetic write head for use in a magnetic disk drive. A shingled-microwave-assisted magnetic recording head for use in a high-areal-density hard disk drive comprises a trailing shield, a flare-shaped main pole, one or more side shields, a spin torque oscillator, and two asymmetric side gaps, where one side gap has a smaller width than the other side gap. The spin torque oscillator shares a first continuous edge with the main pole on a side adjacent the side gap having the smaller width and shares a second continuous edge adjacent a media facing surface. The angle of the spin torque oscillator and the main pole formed by the media facing surface and the narrow side gap is greater than about 90°.

主权项

1. A shingled-microwave-assisted magnetic recording head, the magnetic recording head comprising:
a main pole; two side shields adjacent to the main pole; a trailing shield coupled to the two side shields, wherein two asymmetric side gaps are present on either side of the main pole between the two side shields, wherein the gaps are filled with nonmagnetic material and wherein one side gap has a smaller width than another side gap; and a spin torque oscillator disposed off-centered on an edge adjacent a media facing surface on the main pole such that the spin torque oscillator is only disposed on a portion of the edge of the main pole adjacent the media facing surface, wherein the spin torque oscillator shares a first continuous edge with the main pole on a side adjacent the side gap having the smaller width and shares a second continuous edge adjacent the media facing surface.