Patent ID: 7106554
Filing Date: 2006-09-12
Classification: G11B

Abstract:
1. A perpendicular magnetic writer comprising: a magnetic yoke having first and second non-parallel parts, said first part terminating as a pole tip having a lower surface; said pole tip lower surface being located a distance S from a recording surface; a conductive coil that surrounds said yoke; a return pole having first and second ends; the first end of the return pole being in magnetic contact with the magnetic yoke's second part, extending therefrom so that its second end is a surface that is coplanar with said pole tip lower surface; a control shield, located between said pole tip and said return pole, having a lower surface that is coplanar with said pole tip and return pole lower surfaces; a first non-magnetic gap between said pole tip and said control shield; and a second non-magnetic gap between said control shield and said return pole.