Patent ID: 7464458
Filing Date: 2008-12-16
Classification: G11B,H01F,Y10T

Abstract:
1. A method for constructing a write head for perpendicular magnetic recording, comprising: depositing a layer of write pole material; depositing a non-magnetic write gap material over said write pole material; forming a magnetic shield pedestal over said write gap material layer, said shield pedestal having first and second lateral sides defining planes perpendicular to an air bearing surface; and performing a material removal process to remove selected portions of said write gap layer and said write pole material using said shield pedestal as a mask to prevent removal of said write gap material and said write pole material disposed beneath said shield pedestal; wherein a distance between said first and second lateral sides of said shield pedestal defines a track width and wherein said shield pedestal has a depth in a direction perpendicular to said air bearing surface that is less than said track width.