Write head with floating side shields and enhanced magnetic potential

摘要

A write head has a pole tip, a write yoke connected to the pole tip, a write return yoke, a write shield, and one or more side shields disposed in close proximity to the pole tip. The write return yoke connects to the write yoke on one end and the write shield on a different end. The one or more side shields are separated from the pole tip and write shields by a non-magnetic material and therefore are “floating” and not directly coupled to the write shield or pole tip.

主权项

1. A write head for a disk drive comprising:
a pole tip; a write yoke connected to the pole tip; a write return yoke, wherein the write yoke connects to a first end of the write return yoke; a write shield connected to a second end of the write return yoke different from the first end, and the write shield separated from the pole tip by a write gap distance; and one or more side shields disposed in close proximity to the pole tip; wherein each of the one or more side shields is separated from the pole tip by a non-magnetic material or by a magnetic material with low saturation magnetization or by a magnetic material with low permeability; and wherein each of the one or more side shields is separated from the write shield by a particular non-magnetic material or by a particular magnetic material with low saturation magnetization or by a particular magnetic material with low permeability and the write shield separated from each of the one or more side shields by the write gap distance and the one or more side shields have a higher magnetic potential than the write shield, and a gap distance between the pole tip and each of the one or more side shields is between 10% to 40% of a track pitch of an associated magnetic recording layer.