Patent ID: 7006327
Filing Date: 2006-02-28
Classification: B82Y,G11B,Y10T

Abstract:
1. A writer for use in a data recording head assembly, comprising: a bottom magnetic pole having a substantially planar upper surface including a recessed surface defining a bottom of a coil trench; a write gap layer deposited on the upper surface of the bottom magnetic pole extending to cover and contact at least a portion of the recessed surface; a top magnetic pole disposed above the bottom magnetic pole and the write gap layer including a first layer comprising a front pole tip and a back pole tip spaced apart with side walls defining side walls of the coil trench, wherein the pole tips each include an upper surface distal to the bottom magnetic pole with the upper surfaces being substantially coplanar; a pole cover layer of insulating material disposed with a thickness over the recessed surface of the bottom magnetic pole and over the side walls of the top pole tips, the pole cover layer contacting and covering a portion of the write gap layer extending to cover and contact the portion of the recessed surface; an electrically conducting coil with elements disposed on the pole cover layer between the top pole tips; and an insulator covering the coil and filling gaps between the coil elements and the top pole tips, wherein the insulator comprises a coil insulator layer disposed among the coil elements and covering the side walls of the pole tips and a covering insulation layer disposed over the coil insulator layer and the coils.