Patent ID: 8107191

Claim:
A perpendicular magnetic recording (PMR) head for recording data in a PMR medium, the PMR head comprising: a main pole comprising a first end portion disposed on an air bearing surface (ABS) that is opposite to the PMR medium, and a second end portion; a return yoke spaced apart from the main pole; a first sub-yoke starting from the second end portion of the main pole and extending away from the PMR medium, so as to magnetically connect the main pole with the return yoke; a first coil disposed to enclose the first sub-yoke; a second sub-yoke starting from the second end portion of the main pole and extending away from the PMR medium and the main pole, so as to magnetically connect the main pole with the first sub-yoke; and a second coil disposed to enclose the second sub-yoke.