| US 7,551,396 B2 | ||
| Perpendicular magnetic write head having a studded trailing shield compatible with read/write offset | ||
| Yimin Hsu, Sunyvale, Calif. (US); Quang Le, San Jose, Calif. (US); and Roger William Wood, Gilroy, Calif. (US) | ||
| Assigned to Hitachi Global Storage Technologies Netherlands B.V., Amsterdam (Netherlands) | ||
| Filed on Apr. 27, 2005, as Appl. No. 11/116,796. | ||
| Prior Publication US 2006/0245109 A1, Nov. 02, 2006 | ||
| Int. Cl. G11B 5/147 (2006.01) | ||
| U.S. Cl. 360—125.3 [360/125.02] | 8 Claims |
| 1. A write head for perpendicular magnetic recording, comprising:
a return pole constructed of a magnetic material and having an end disposed toward an air bearing surface;
a write pole constructed of a magnetic material having a surface disposed toward the air bearing surface, the write pole being
magnetically connected with the return pole;
a magnetic pedestal; connected with the return pole at the end of the return pole that is disposed toward the air bearing
surface, the magnetic pedestal extending toward the write pole;
first and second laterally opposed magnetic studs extending from and contacting an edge of the pedestal closest to the write
pole; and
a trailing magnetic shield extending between the first and second studs, and being magnetically connected with the first and
second studs, the trailing shield being separated from the write pole by a non-magnetic gap layer; wherein
a portion of each of the first and second studs is formed with a notch; and
each of the first and second magnetic studs has an inner end that faces the other magnetic stud, and wherein the notch is
formed at the inner end of each magnetic stud resulting in a laterally inward disposed notch portion and a laterally outward
disposed upward extending portion formed on each of the first and second magnetic studs.
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