Patent ID: 8520336

Claim:
A magnetic recording head having an air-bearing surface (ABS) configured to reside in proximity to a recording media during use, the magnetic recording head comprising: a main pole comprising a pole tip having a first width (w 1 ) at the ABS, a second width (w 2 ) at a first distance (d 1 ) from the ABS, a third width (w 3 ) at a second distance (d 2 ) from the ABS, and a fourth width (w 4 ) at a third distance (d 3 ) from the ABS; the pole tip extending distally from the first width (w 1 ) to the second width (w 2 ) wherein a first side wall extending from the ABS to the first distance (d 1 ) of the pole tip forms a first angle (θ 1 ) with respect to the ABS; the pole tip widening distally from the second width (w 2 ) to the third width (w 3 ) wherein a second side wall extending from the first distance (d 1 ) to the second distance (d 2 ) of the pole tip forms a second angle (θ 2 ) with respect to the ABS; the pole tip widening distally from the third width (w 3 ) to the fourth width (w 4 ) wherein a third side wall extending from the second distance (d 2 ) to the third distance (d 3 ) of the pole tip forms a third angle (θ 3 ) with respect to the ABS, wherein: the second angle (θ 2 ) is less than the first angle (θ 1 ), the third angle (θ 3 ) is greater than the second angle (θ 2 ), and the first distance (d 1 ) is between 25 and 100 nanometers (nm).