Thin-film magnetic head and method of manufacturing same

摘要

A thin-film magnetic head comprises a medium facing surface, a bottom pole layer, a top pole layer, a coupling portion, a recording gap layer, and a thin-film coil. The coupling portion is disposed away from the medium facing surface and couples the bottom pole layer to the top pole layer. The recording gap layer is disposed between the pole portion of the bottom pole layer and the pole portion of the top pole layer. The bottom pole layer incorporates: a first layer disposed to face toward the thin-film coil; a second layer, a third layer and a fourth layer that are disposed near the medium facing surface; and a coupling layer disposed away from the medium facing surface and coupling the bottom pole layer to the top pole layer. The thin-film coil incorporates: a first coil having turns part of which is disposed between the second layer and the coupling layer; a second coil having turns at least part of which is disposed between turns of the first coil; and a connecting layer disposed on a side of the third layer and connecting the first coil to the second coil in series