Patent ID: 6925702
Filing Date: 2005-08-09
Classification: G11B,Y10T

Abstract:
1. A method of making a horizontal magnetic head having an air bearing surface (ABS) for facing a moving magnetic medium, comprising: forming at least one coil layer and an insulation stack with the coil layer being embedded in the insulation stack; forming said at least one coil layer with a filament which spirals in a plane which is parallel to said ABS and about an axis which is perpendicular to the ABS; forming first and second pole pieces with the insulation stack sandwiched between the first and second pole pieces; forming the first pole piece with a first horizontal component which is partially bounded by first and second major planar thin film surfaces joined by a first edge surface with the first major planar thin film surface of the first horizontal component forming a portion of the ABS; forming the second pole piece with a second horizontal component which is partially bounded by first and second major planar thin film surfaces joined by a second edge surface with the first major planar thin film surface of the second horizontal component forming a portion of the ABS; forming the first and second edge surfaces with first and second surfaces which are perpendicular to the ABS and which are first and second thicknesses respectively of the first and second horizontal components respectively wherein the degree of each thickness is formed by sputtering or plating over a period of time; forming a write gap layer between and interfacing the first and second surfaces of said first and second edge surfaces; forming a first shield layer having first and second major planar thin film surfaces joined by a third edge surface with the first major planar thin film surface of the first shield layer forming a portion of the ABS and having a greater surface area than a surface area of said third edge surface; and forming a magnetoresistive (MR) sensor and first and second gap layers with the MR sensor sandwiched between the first and second gap layers and the first and second gap layers located between the third edge surface and the first horizontal component and with the MR sensor and the first and second gap layers forming portions of the ABS.