Patent ID: 7292409

Claim:
A magnetic head for writing information on a relatively-moving medium, the head having a leading end, a trailing end and a medium-facing surface, the head comprising: a first soft magnetic pole layer disposed in the head adjacent to the medium-facing surface and extending substantially perpendicular to the medium-facing surface; a second soft magnetic pole layer disposed closer than the first soft magnetic pole layer to the trailing end, the second soft magnetic pole layer magnetically coupled to the first soft magnetic pole layer in a backgap region that is removed from the medium-facing surface; a soft magnetic pedestal adjoining the second pole layer, the soft magnetic pedestal disposed closer than the second soft magnetic pole layer to the medium-facing surface and extending less than the second soft magnetic pole layer extends from the medium-facing surface, the soft magnetic pedestal separated from the first soft magnetic pole layer by a nonferromagnetic gap, the soft magnetic pedestal having a thickness that is less than four hundred and fifty nanometers between the nonferromagnetic gap and the second soft magnetic pole layer; and a conductive section that is disposed between and electrically isolated from the first and second soft magnetic pole layers, the conductive section being part of a coil; and wherein the magnetic head has at least one set of characteristics selected from a group consisting of the following sets of characteristics: (a) the conductive section is ferromagnetic and the coil substantially encircles the second soft magnetic pole layer; (b) the coil includes a first plurality of conductive sections that are disposed between and electrically isolated from the first and second soft magnetic pole layers the first plurality of conductive sections disposed in a first layer, extending parallel to each other, and each terminating in a conductive portion that is disposed in the first layer and extends transversely to the first plurality of conductive sections; and (c) the coil includes a second plurality of conductive sections that are disposed between and electrically isolated from the first and second soft magnetic pole layers, the conductive sections disposed in a second layer, extending parallel to each other, and having a different length measured in a direction parallel to the medium-facing surface.