Patent ID: 6181514
Filing Date: 2001-01-30
Classification: G11B

Abstract:
A magnetic write head that has an air bearing surface (ABS), a zero throat height (ZTH), a flare point and a yoke region that is located between a pole tip region and a back gap region, the pole tip region extending from the ABS to the flare point and the yoke region extending from the flare point to the back gap region comprising:first and second ferromagnetic pole piece layers extending throughout the pole tip, yoke and back gap regions, each pole piece layer having a thickness in the yoke region;an insulation stack;an electrically conductive coil layer embedded in the insulation stack, the coil layer having a thickness;the insulation stack being located between the first and second pole piece layers in the yoke region;a nonmagnetic write gap layer located between the first and second pole piece layers in the pole tip region;the first and second pole piece layers being connected together in the back gap region;the thickness of the coil layer being equal to or greater than the thickness of the second pole piece layer;the insulation stack having a height about twice the thickness of the coil layer;a distance from the ABS to the coil layer being about three time the thickness of the coil layer; andthe ZTH being about 1/3 the thickness of the coil layer.