Patent ID: 9466319
Filing Date: 2016-10-11
CPC Classification: G11B

Claim Text:
1. A perpendicular magnetic recording (PMR) writer, comprising: (a) a main pole comprised of a write pole portion having a leading side adjoining a lead gap, and with a leading edge at an air bearing surface (ABS), and having a trailing side adjoining a write gap, and a trailing edge at the ABS; (b) a gap layer surrounding the main pole, the gap layer includes the lead gap, the write gap, and a side gap which contacts each of two sidewalls of the write pole portion wherein each sidewall is equidistant from a center plane that is aligned orthogonal to the ABS; and (c) an all wrap around (AWA) shield structure wherein one or more of a leading shield, side shields, and a second trailing shield consist of a high damping (HD) magnetic layer having a damping constant α of at least 0.04, comprising: