Patent ID: 6557242
Filing Date: 2003-05-06
Classification: G11B,Y10T

Abstract:
A method of making a write head, that has a head surface for facing a moving magnetic medium and a back gap site which is recessed from the head surface within the write head, comprising the steps of:forming a first pole piece with a bottom first pole piece layer and a top first pole tip layer with the top first pole tip layer being on the bottom first pole piece layer; forming a second pole piece with a bottom second pole tip layer and a top second pole piece layer with the top second pole piece layer being on the bottom second pole tip layer; connecting the bottom first pole piece layer and the top second pole piece layer together at a back gap and extending the bottom first pole piece layer and the top second pole piece layer toward the head surface; forming an insulation stack with at least one coil layer embedded therein; locating the insulation stack between the bottom first pole piece layer and the top second pole piece layer in a position between the head surface and the back gap; locating the top first pole tip layer and the bottom second pole tip layer entirely between the head surface and the coil layer; forming a write gap layer between the top first pole tip layer and the bottom second pole tip layer that separates the top first pole tip layer and the bottom second pole tip layer from one another at the head surface; forming a zero throat height (ZTH) defining layer on said gap layer between the top first pole tip layer and the bottom second pole tip layer and recessed from the head surface toward the back gap so as to further separate the top first pole tip layer and the bottom second pole tip layer from one another at a location recessed from the head surface toward the back gap to define a zero throat height of the head where the first and second pole pieces first commence to separate from one another after the head surface.