Patent ID: 9076466
Filing Date: 2015-07-07
Classification: G11B,Y10T

Abstract:
1. A magnetic head, comprising: a main pole adapted for producing a writing magnetic field; a trailing shield positioned on a trailing side of the main pole, wherein a trailing gap is positioned between the trailing shield and the main pole; and a side shield positioned on at least one side of the main pole in a cross-track direction, wherein a side gap is positioned between the side shield and the main pole, wherein an outer periphery of the main pole has an asymmetrical shape at an air bearing surface (ABS) thereof, wherein the asymmetrical shape comprises four apexes, each apex having an angle of less than 180° measured in an interior of the outer periphery between intersecting sides of the main pole, wherein at least three of the apexes are positioned on a centerline of the main pole and/or to a first side of the centerline of the main pole in a cross-track direction,. wherein the shaped edge of the main pole is defined by being on the first side of the main pole between two adjacent apexes, and wherein the shaped edge is located between and adjacent to a trailing edge of the main pole on the trailing side thereof and a side edge of the main pole on the first side thereof.