Patent ID: 6483662
Filing Date: 2002-11-19
Classification: G11B

Abstract:
A thin film magnetic write head having a short yoke length and a high magnetic motive force, the write head comprising:a magnetic first pole having a top surface, and a back end adjacent thereto; a first insulating layer deposited on said top surface of said first pole; a first coil, deposited on top of said insulating layer, said first coil having at its periphery a first contact and having at its center a second contact; a second insulating layer formed on top of said first coil; a second coil, having at its center a first contact, and having at its periphery a second contact; said second contact of said first coil and said first contact of said second coil being in electrical contact through said second insulating layer; a third coil, coplanar and concentric with said second coil, having at its periphery a first contact and having at its center a second contact; a third insulating layer, formed on top of said second and third coils; a fourth coil, formed on top of said third insulating layer, having at its periphery a first contact and at its center a second contact; said second contact of said second coil being in electrical contact with said first contact of said fourth coil through said third insulation layer; said second contact of said fourth coil being in electrical contact with said second contact of said third coil through said third insulating layer; a fourth insulating layer formed on top of said fourth coil; and a magnetic second pole formed on top of said fourth insulating layer, said second pole having a back end in magnetic contact with said back end of said fist pole, and said first and second poles defining therebetween a write gap distal from said back ends.