Patent ID: 7130153
Filing Date: 2006-10-31
Classification: G11B,Y10T

Abstract:
1. A magnetic write head assembly which has a yoke portion located between pole tip and back gap portions and a head surface at the pole tip portion, with the head surface having a track width and forming a first vertical plane comprising: first and second pole pieces; a write gap located between the first and second pole pieces; the second pole piece having first and second components wherein the first component is located between the write gap and the second component and each of the first and second components has a height into the head which extends from and which is oriented perpendicular to said head surface; the first component having a uniform thickness throughout its height into the head with the height into the head forming a zero throat (ZTH) which lies in a second vertical plane that is parallel to said first vertical plane; the height into the head of the second component being greater than the height into the head of the first component; each of the first and second components having said track width at the head surface; the first component and a first insulation layer forming a first horizontal plane that extends from the head surface entirely to the back gap in a direction that is perpendicular to the head surface; and the second component interfacing the first component and a first portion of the first insulation layer at said first horizontal plane with a second portion of the first insulation layer extending from the first component to the back gap.