Invention Application
US20090116145A1 Perpendicular shield pole writer with tapered main pole and tapered non-magnetic top shaping layer 有权
垂直屏蔽极写入器,带锥形主极和锥形非磁性顶部成型层

Perpendicular shield pole writer with tapered main pole and tapered non-magnetic top shaping layer
Abstract:
A PMR writer with a tapered main pole layer and tapered non-magnetic top-shaping layer is disclosed that minimizes trailing shield saturation. A second non-magnetic top shaping layer may be employed to reduce the effective TH size while the bulk of the trailing shield is thicker to allow a larger process window for back end processing. A sloped surface with one end at the ABS and a second end 0.05 to 0.3 microns from the ABS is formed at a 10 to 80 degree angle to the ABS and includes a sloped surface on the upper portion of the main pole layer and on the non-magnetic top shaping layer. An end is formed on the second non-magnetic top shaping layer at the second end of the sloped surface followed by forming a conformal write gap layer and then depositing the trailing shield on the write gap layer and along the ABS.
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