Patent ID: 8379347
Filing Date: 2013-02-19
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 a first end at the ABS and an opposite end formed a first distance from the ABS such that said opposite end is a greater distance from the substrate than the first end, said lower portion has an 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 first 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 second end connected to the opposite end of the sloped surface of the main pole layer and a third end that is a greater distance from the substrate than the second end, and said non-magnetic top shaping layer has an upper surface that is parallel to the substrate and is connected to the third end at a second distance from the ABS; (c) a second non-magnetic top shaping layer formed on the upper surface of the tapered first non-magnetic top shaping layer, said second non-magnetic top shaping layer has an end formed parallel to the ABS and separated by the second distance from the ABS, and has an upper surface connected to said end and formed parallel to the substrate; (d) a conformal write gap layer having a first section with a top surface formed on the sloped surface of the upper portion of the main pole layer and on the sloped surface of the first non-magnetic top shaping layer, a second section having a top surface facing the ABS on said end of the second non-magnetic top shaping layer, and a third section on the upper surface of the second non-magnetic shaping layer that extends to a third distance from the ABS; and (e) a trailing shield formed on the first section and over a portion of the third section of the conformal write gap layer, said trailing shield has a first side along the ABS, a second side opposite the first side that is a second distance from the ABS, a third side coincident with the top surface of said first section, a fourth side coincident with the top surface of said second section, and a side opposite the third side that connects the first and second sides.