Patent ID: 8300358
Filing Date: 2012-10-30
Classification: G11B

Abstract:
1. A magnetic head including a write element, the write element comprising: a main pole having a portion extending to an air bearing surface to define a track width and a portion whose width progressively broadens as receding from the air bearing surface; a lower soft magnetic film magnetically connected to the main pole and having an air bearing surface side end receded from the air bearing surface and a rear end opposite the air bearing surface side end; an upper soft magnetic film having an air bearing surface side end positioned near the air bearing surface and a rear end opposite the air bearing surface side end, wherein the rear end of the upper soft magnetic film is magnetically connected to the rear end of the lower soft magnetic film at a position away from the air bearing surface constituting a closed magnetic path with the lower soft magnetic film; a coil interlinked with the closed magnetic path; first soft magnetic films separately disposed on both sides of the main pole in a direction parallel to a plane of deposition of the main pole, the first soft magnetic films each having an air bearing surface side end receded from the air bearing surface; and a second soft magnetic film disposed on a trailing side of the main pole in a track direction, wherein the rear end of the lower soft magnetic film is positioned away from the air bearing surface in a direction perpendicular to the air bearing surface at a position beyond at least some turns of the coil, wherein the rear end of the upper soft magnetic film is positioned away from the air bearing surface in a direction perpendicular to the air bearing surface at a position beyond at least some turns of the coil, and wherein the lower soft magnetic film is a planar film having a longitudinal axis positioned along a line perpendicular to the air bearing surface.