Perpendicular magnetic recording head with flare and taper configurations
View Patent ↗A magnetic write head for use in perpendicular magnetic data recording. The write head includes a write pole and a trailing shield having a tapered surface. A return pole stitched to the trailing shield is magnetically connected with the write pole at a location away from the air bearing surface (ABS).
1. A write element for perpendicular magnetic recording, comprising:
a write pole terminating at a plane defining an air bearing surface and having a track width measured parallel to the air bearing surface;
a return pole magnetically connected with said write pole in a back gap area and having a width greater than said track width;
said write pole being one or more layers of magnetic material having a tapered surface portion wherein said write pole becomes progressively thicker with increased distance from said air hearing surface;
a magnetic shield, magnetically connected with said return pole, and having a tapered surface portion substantially parallel with said tapered surface portion of said write pole and separated from said write pole by a non-magnetic write gap layer.
2. A write element as in claim 1 , wherein said tapered surface portion of said magnetic shield defines an angle of less than 90 degrees with respect to said air bearing surface.
3. A write element as in claim 1 , wherein said tapered surface portion of said magnetic shield defines an angle of between 60 and 90 degrees with respect to said air bearing surface.
4. A magnetic write element as in claim 1 , wherein said shield is configured with a flared portion having a lateral width that increases with increasing distance from said air bearing surface, and wherein said flared portion of said shield initiates closer to said air bearing surface than said tapered surface portion of said shield.
5. A magnetic write element as in claim 1 , wherein said write pole is configured with a flared portion having a lateral width that increases with increasing distance from said air bearing surface, and wherein said tapered surface portion of said write pole initiates closer to said air bearing surface than said flared portion of said write pole.
6. A magnetic write element as in claim 1 , wherein said tapered shield further includes first and second laterally flared wing portions.
7. A magnetic write element as in claim 6 , wherein said laterally flared wing portions initiate at a point closer to the air bearing surface than said tapered surface portion of said shield.
8. A magnetic write element for perpendicular magnetic recording, comprising:
magnetic write pole having a track width and terminating at an air bearing surface (ABS);
a magnetic return pole having a width substantially larger than said write pole, said return pole being in magnetic connection with said write pole in a back gap area;
a trailing shield, said shield having a tapered surface that is disposed adjacent to said write pole and separated therefrom by a non-magnetic write gap;
wherein said tapered shield further includes first and second laterally flared wing portions and wherein said laterally flared wing portions initiate at a point closer to the ABS than said tapered surface.