Magnetic write head having a splitcoil structure

A thin film magnetic write head for high density data recording, comprising:

• a magnetic yoke having an open end and a closed end opposite the open end and defining an open interior between the open and closed ends;
• two or more electrically conductive coils in parallel electrical circuits, a portion of each coil passing through the interior of the yoke, the electrically conductive coils being arranged such that successive electrically conductive coils are disposed directly above a lower electrically conductive coil;
• an inner coil contact pad forming an inner end of each electrically conductive coil and an outer coil contact pad forming an outer end of each electrically conductive coil;
• a coil separation layer disposed directly between successive electrically conductive coils and that extends from the inner coil contact pad to the outer coil contact pad;
• and
• an electrical insulator disposed at least partially within said yoke interior and electrically isolating said coils from said yoke.

A thin film magnetic write head having a parallel path coil structure comprising:

• a magnetic yoke having a closed end and an open end and having first and second poles extending from said closed end to said open end, said yoke defining an interior between said first and second poles;
• a write gap pedestal disposed between said first and second poles at said open end and including upper and lower surfaces defining upper and lower planes;
• an electrically conductive coil, having a portion thereof extending through said yoke interior, said coil being electrically insulated from said yoke, said coil terminating in inner and outer contacts, at least a portion of said coil being split one or more times to define two or more parallel electrical circuits respectively;
• and
• a dielectric layer disposed between said first pole and said electrically conductive coil and including upper and lower surfaces that are coplanar with said upper and lower planes.

A method for fabricating a thin film magnetic write head comprising:

• forming a first magnetic pole;
• forming a first dielectric layer over the magnetic pole;
• forming a first coil layer including an inner and an outer end and defining a first electrically conductive circuit over the first dielectric layer;
• forming a coil separation layer over all of the first coil layer except for over portions of the first coil layer at the inner end and at the outer end;
• forming a second coil layer including an inner and an outer end and defining a second electrically conductive circuit over the coil separation layer, the inner and the outer ends of the second coil layer being in electrical contact with the inner and the outer ends of the first coil layer, respectively;
• forming a second dielectric layer over the second coil layer;
• and
• forming a second magnetic pole over the second dielectric layer.