Patent ID: 8238056
Filing Date: 2012-08-07
Classification: G11B

Abstract:
1. A perpendicular magnetic recording (PMR) writer, comprising: (a) a tapered main pole layer comprised of a lower portion formed on a substrate and having a pole tip at an air bearing surface (ABS), and an upper portion having a sloped surface with one end at the ABS and an opposite end formed a certain distance from the ABS such that said opposite end is a greater distance from the substrate than the one end, said lower portion has a upper surface formed parallel to the substrate and said upper portion has an upper surface connected to the opposite end of the sloped surface and aligned parallel to the substrate; (b) a tapered non-magnetic top shaping layer formed on the upper surface of the upper portion of the main pole layer, said non-magnetic top shaping layer has a sloped surface with a first end connected to the opposite end of the sloped surface of the main pole layer and a second end that is a greater distance from the substrate than the first end, and said non-magnetic top shaping layer has an upper surface that is parallel to the substrate and is connected to said second end at an effective throat height distance from the ABS; (c) a conformal write gap layer having a first section formed on the sloped surface of the upper portion of the main pole layer and on the sloped surface of the non-magnetic top shaping layer, and a second section on the upper surface of the non-magnetic shaping layer; and (d) a trailing shield formed on the first section of the conformal write gap layer, said trailing shield has a first side along the ABS, a second side at a throat height (TH) distance from the ABS and opposite the first side, a third side coincident with said first section and a fourth side opposite said third side and formed perpendicular to the ABS, the second side of the trailing shield has an end formed at an intersection of the first section and second section of the conformal write gap layer.