Patent ID: 8300359

Claim:
A perpendicular magnetic write head comprising: a magnetic pole having an end face exposed on an air bearing surface; a pair of side shields each having an end face exposed on the air bearing surface, the pair of side shields being arranged on both sides of the magnetic pole with side gaps in between, respectively, the both sides being in a write-track width direction; and a trailing shield provided on a trailing side of the magnetic pole and of the pair of side shields with a trailing gap in between, and having an end face exposed on the air bearing surface, wherein the trailing gap has a first regional part and a second regional part, the first regional part separating a trailing edge of the magnetic pole from the trailing shield, and the second regional part separating the pair of side shields from the trailing shield, an overall or a part of the second regional part has a thickness larger than a thickness of the first regional part, the second regional part has a minimum thickness at a first position which is closest to the magnetic pole, and the second regional part includes a part where thickness increases with increasing distance starting at the first position from the magnetic pole in the write-track width direction.