Patent ID: 8649123
Filing Date: 2014-02-11
Classification: G11B

Abstract:
1. A perpendicular magnetic recording (PMR) head comprising: an insulating layer; a pole trench and a yoke area formed in the insulating layer, wherein the yoke area consists of a triangular shaped area having two side walls positioned on opposite sides of a centerline of the pole trench; wherein the pole trench and the two side walls of the yoke area comprise similar side wall angles; and a PMR pole, wherein at least a portion of the PMR pole is positioned within the pole trench, wherein the pole trench and the yoke area comprise a common bottom surface; wherein the two side walls of the yoke area each terminate at the common bottom surface; wherein the common bottom surface is substantially flat; and wherein the portion of the PMR pole positioned within the pole trench is in direct contact with each of the side walls defining the pole trench.