Patent ID: 7576952

Claim:
A magnetic head provided with a write head having a lower core, an upper core, and a coil conductor disposed between said lower core and said upper core, the magnetic head comprising: a pedestal magnetic pole piece formed on said lower core; and a first nonmagnetic film formed between said pedestal magnetic pole piece and said upper core; a second nonmagnetic film formed above said first nonmagnetic film and below said upper core; wherein said pedestal magnetic pole piece has a protrusion at a position corresponding to a flare point of said upper core, the corresponding position being disposed between an air bearing surface position and an edge position of said nonmagnetic film; and wherein the protrusion of said pedestal magnetic pole piece has a front end, which is formed closer to the air bearing surface and further away from the edge of said second nonmagnetic film, and a rear end, which is formed under said second nonmagnetic film, and wherein said front end is at a position corresponding to a flare point of said upper core, and said rear end has a stepped part corresponding with the edge position of said second nonmagnetic film; wherein said upper core is in contact with the first nonmagnetic film composing a write gap on the air bearing surface side, and is placed over the second nonmagnetic film; wherein said second nonmagnetic film has a thickness of about 0.1 to 0.3 μm.