Patent ID: 8437102

Claim:
A magnetic head comprising: a main magnetic pole having a first section having a first substantially constant width, a second section having a second substantially constant width, and a third section having a third substantially constant width, a fourth section having a tapered width that extends from the first section to the second section, and a fifth section having a tapered width that extends from the second section to the third section; a sub magnetic pole; a first coil conductor formed between a layer on which the main magnetic pole is formed and a layer on which the sub magnetic pole is formed; and a first magnetic film disposed on side faces of the main magnetic pole via a first non-magnetic film, wherein a first distance between an air bearing surface and the second section is larger than a second distance between the air bearing surface and the first section, the first non-magnetic film is formed along the first section; and a second magnetic film disposed on a trailing side of the main magnetic pole and magnetically coupled to the first magnetic film; and a second non-magnetic film formed between the main magnetic pole and the second magnetic film wherein the second non-magnetic film does not contact a second coil conductor formed between a third magnetic film and the second magnetic film, and wherein a distance in a depth direction from the air bearing surface to a region in which the second non-magnetic film and the second magnetic film contact is larger than a thickness in the depth direction of the first magnetic film.