Patent ID: 8842388

Claim:
A perpendicular magnetic recording head comprising: a main magnetic pole; a magnetic yoke connected with a rear portion of the main magnetic pole; a magnetic shield provided on an air bearing surface and on a trailing side and both sides of the main magnetic pole; a nonmagnetic insulating layer provided on the main magnetic pole and the magnetic yoke; a first coil provided on a leading side of the main magnetic pole; a second coil provided on the nonmagnetic insulating layer, the first and second coils being helically wound around the main magnetic pole and the magnetic yoke; an upper magnetic pole provided on the trailing side of the main magnetic pole, wherein, the nonmagnetic insulating layer has a recessed portion on which the second coil is provided, and the second coil provided on the recessed portion extends beyond the non-recessed portion of the nonmagnetic insulating layer, wherein the second coil has a thickness that is substantially equal to the depth of the recessed portion plus the distance the second coil extends beyond the non-recessed portion of the nonmagnetic insulating layer; and wherein the nonmagnetic insulating layer has non-recessed portions on both sides of the second coil and wherein, each of the first and second coils has a plurality of conductive layer portions crossing the magnetic yoke in the direction of a track width, the conductive layer portions of the first coil are connected with the respective conductive layer portions of the second coil through respective connection tabs in a region outside the magnetic yoke to respectively constitute helical coils, and the connection tab is formed by laminating a layer made of the same material as that of the magnetic yoke, a layer made of the same material as that of the magnetic shield, and a layer made of the same material as that of the second coil; and wherein the connection tab is formed, at least in part, by etching.