Patent ID: 8630153
Filing Date: 2014-01-14
Classification: G11B,Y10T

Abstract:
1. A TAMR (thermally assisted magnetic recording) head, comprising: a yoke; a magnetic write pole magnetically contacting said yoke which, wherein said magnetic write pole, when energized by current in a surrounding coil, produces a magnetic field for writing on a magnetic recording medium rotating beneath an ABS end; a return pole; a back gap connecting the yoke to the return pole; a source of electromagnetic radiation; a waveguide for directing said electromagnetic radiation to a plasmon generator; said plasmon generator, formed contacting said magnetic write pole and overlapping said waveguide but separated from said waveguide by a gap, wherein said electromagnetic radiation is coupled to a plasmon mode that transfers energy to said magnetic recording medium; a concave leading shield attached by a pedestal to said return pole; wherein said concave leading shield is characterized by a concave opening that surrounds bottom and side edges of said waveguide, and through which said concave opening said waveguide passes and whereby a distal end of said waveguide extends to an ABS plane of said TAMR head and is co-planar in said ABS plane with distal ends of said write pole, said plasmon generator, said concave leading shield and said pedestal.