Graded Bevel Tapered Write Pole Design for Field Enhancement

A perpendicular magnetic write pole for magnetic recording, having an air bearing surface (ABS), comprising:

• a first magnetic layer, having a first upper surface and a first planar edge that is normal to said first upper surface and that functions as the ABS;
• on said first magnetic layer, a second magnetic layer having a second upper surface and a second edge that is coplanar with said first edge;
• a write gap in the form of a non-magnetic layer having a third edge that is symmetrically located between, that is coplanar with, and that fully contacts, said first and second edges;
• said non-magnetic layer further comprising a first part that extends from said third edge at an angle between about 10 and 45 degrees as far as said second upper surface and a second part, connected to said first part, that lies on said second upper surface;
• said first and third edges having, in combination, the shape of a trapezoid, having a first maximum width, whose non-parallel sides converge, at a first taper angle, down to said first magnetic layer's lower surface;
• and
• wherein said second edge has a maximum width that exceeds said first maximum width and has the shape of a rectangle which overlaps said third edge by at least 20% of said first maximum width;
• whereby additional flux is directed to the ABS without the need to increase said first taper angle.