Perpendicular magnetic recording head having a pole tip formed with a CMP uniformity structure

A perpendicular magnetic recording head comprising;

• a chemical mechanical planarization (CMP) uniformity structure having an aperture therein, the CMP uniformity including an insulating CMP support structure and a CMP barrier layer on the CMP support structure, the aperture extending through the CMP support structure and the CMP barrier layer, the CMP support structure having a thickness equal to at least a desired thickness of the perpendicular magnetic recording pole, the aperture having an aperture width;
• a plated perpendicular magnetic recording pole within the aperture, the plated perpendicular magnetic recording pole having a pole width, the aperture width being at least ten multiplied by the pole width;
• an insulator in a remaining portion of the aperture;
• a write gap on the plated perpendicular magnetic recording pole;
• and
• a shield on the write gap.