Comprising Means For Controlling The Reluctance Of The Magnetic Circuit [n: In A Head With Single Gap, For Co-operation With One Track; (g9b/5.067 Takes Precedence; For Plural Gaps Or Plural Tracks G9b/5.04, G9b/5.068, G9b/5.075, G9b/5.159 And Subgroups)] {g11b 5/245} Patents (Class G9B/5.063)

Cross-Reference Art Collections

[n: where the dimensions of the effective gap are controlled] {g11b 5/245c} (Class G9B/5.064)
  • Optimized write pole flare angle for side shield or semi side shield PMR writer application
    Publication number: 20110116190
    Abstract: Improved writability and a reduction in adjacent track erasure are achieved in a PMR writer with a large flare angle of 45 and 90 degrees in the main write pole and a full side shield or partial side shield configuration around the narrow write pole section and write pole tip. A trailing shield is formed above the write pole's top surface and a full or partial side shield section is spaced a certain distance from each side of the write pole. The partial side shield has a thickness less than that of the write pole and a top or bottom surface about coplanar with the pole tip's top or bottom edge, respectively. The partial side shield may include two sections on each side of the write pole wherein the bottom surface of a top section is separated by a certain distance from the top surface of a bottom section.
    Type: Application
    Filed: January 14, 2011
    Publication date: May 19, 2011
    Inventor: Lijie Guan