Patent ID: 6074566
Filing Date: 2000-06-13
Classification: G11B,Y10T

Abstract:
A method for making a thin film inductive write head having first and second pole pieces with pole tips spaced by a nonmagnetic gap and a layer of electrically conductive material patterned as a coil between the first and second pole pieces, the method comprising:providing a layer of ferromagnetic material to serve as the first pole piece;depositing a layer of nonmagnetic gap material on the first pole piece layer;depositing a first layer of organic insulation material over the gap layer;patterning an electrically conductive layer into a coil on the first insulation layer;depositing a planarizing layer of organic insulation material over the coil onto the first layer of insulation material in the regions between the turns of the coil and onto the gap layer in the region near the pole tip of the first pole piece layer;patterning a layer of ferromagnetic material over the planarizing layer of organic insulation material to pattern the second pole piece over a portion of the coil;applying a pattern of photoresist material over at least the portion of the coil not beneath the second pole piece;reactive ion etching the insulation layers down to the gap layer using the second pole piece and the pattern of photoresist material as a mask; whereby organic insulation material is substantially removed in the region near the pole tip of the second pole piece; anddepositing a layer of dielectric material over the second pole piece and onto the gap layer exposed by the reactive ion etching; whereby the dielectric material is located on the gap layer in the region near the pole tip of the second pole piece and over the second pole piece and organic insulation material is located beneath the second pole piece layer, beneath the coil, and on top of and between the coil turns.