Patent ID: 8643979
Filing Date: 2014-02-04
Classification: G11B

Abstract:
1. A perpendicular magnetic recording head, comprising: a one-piece body forming a single-pole write tip and a return pole, a first end of the return pole and a first end of the single-pole magnetic write tip structured as part of a contiguous section of the body to guide magnetic flux associated with operation of the magnetic recording head, a second end of the single-pole magnetic write tip and a second end of the return pole being separated from one another by a gap, the single-pole magnetic write tip comprising a straight portion extending along a direction substantially perpendicular to a recording medium, a tapered neck forming the second end of the single-pole magnetic write tip and extending from an end of the straight portion with at least two tapered side profiles decreasing in dimension toward the recording medium, and a non-tapered head tip section at an end of the tapered neck to interface with the recording medium, wherein the at least two tapered side profiles of the tapered neck comprises two tapering side profiles along a cross track direction of the recording medium; and a coil engaged to a part of the body to generate a magnetic field in the body which is shaped by the tapered neck forming the second end of the single-pole magnetic write tip with the at least two tapered side profiles to generate a writing magnetic field at the non-tapered head tip section of the single-pole magnetic write tip so as to change a magnetization of a portion of the magnetic medium near the non-tapered head tip section of the single-pole magnetic write head.