Patent ID: 8842389

Claim:
A PMR write head comprising: a main pole; a magnetic shield at least partially surrounding said main pole and formed in the ABS plane of said main pole, wherein said shield includes a trailing shield portion and a portion including two side shields, wherein said side shield portions are formed of the same magnetic material and are formed using the same seed layers and form a substantially continuous structure with said trailing shield portion, and wherein said side shield portions and said trailing shield portion are separated from said main pole by a substantially continuous non-magnetic layer, wherein said non-magnetic layer forms a write gap layer between a trailing edge of said main pole and an inner edge of said trailing shield portion and wherein said non-magnetic layer forms a side gap between side edges of said main pole and inner edges of said side shields; and wherein a high B s seed layer is formed on said write gap layer between said write gap layer and a corresponding region of said trailing shield portion whereby said corresponding region is provided with said high B s and wherein said high B s is greater than the B s of said side shield portions and said trailing shield portion not within said corresponding region.