Patent ID: 8031433

Claim:
A perpendicular magnetic recording (PMR) head, comprising: (a) a main pole layer having a narrow pole section with two sides and a pole tip at an ABS plane, a top surface terminating at a top edge at the pole tip, and a bottom surface terminating at a bottom edge at the pole tip, and a second section adjoining the narrow pole section and formed a certain distance from the ABS wherein the second section has two sides that flare out at a certain angle from the two sides of the narrow pole section at an end opposite the ABS; and (b) a shield structure comprised of: (1) a trailing shield that is separated from the top surface of said narrow pole section and a portion of the second section by a write gap, and adjoins a side shield on opposite sides of the narrow pole section; and (2) a side shield having a section formed on each side of the narrow pole section and a portion of the second section, and separated from said narrow pole section and second section by a side gap layer comprised of a dielectric material wherein each side shield section has a sidewall facing the narrow pole section such that a first side gap distance between said top surface and the sidewall is less than a second side gap distance between said bottom surface and the sidewall, said first and second side gap distances are constant with increasing distance from the ABS along the narrow pole section and a portion of the second section.