Patent ID: 7675709
Filing Date: 2010-03-09
Classification: G11B

Abstract:
1. A magnetic write head for magnetic data recording, the write head having an air bearing surface (ABS) and comprising: a magnetic pole having an end disposed toward the air bearing surface and an opposite end disposed away from the ABS; and a non-magnetic write gap material formed over the magnetic pole, the write gap material extending from the ABS to a location between the ABS and the opposite end; wherein the end of the magnetic pole disposed toward the air bearing surface is configured with a stair stepped notch portion and a steep shoulder portion, the stair stepped notch portion including a first portion having first and second parallel sides that define a first width there-between and a second portion having third and fourth parallel sides that define a second width there-between that is larger than the first width, the first portion being located between the write gap and the second portion, the second portion extending from the first portion to the steep shoulder portion.