Dynamic magnetic information storage or retrieval – Head – Core
Reexamination Certificate
2008-08-25
2010-06-01
Heinz, A. J. (Department: 2627)
Dynamic magnetic information storage or retrieval
Head
Core
C360S125740, C360S294700
Reexamination Certificate
active
07729086
ABSTRACT:
A magnetic head for perpendicular magnetic recording includes a slider having an air bearing surface (ABS) and a trailing surface and a transducer fabricated on the trailing surface. The transducer includes a magnetoresistive (MR) read element disposed within a gap material bounded by shield material, an adjunct pole, and a main pole formed in an adjacent layered relationship to the adjunct pole. The adjunct pole has a front edge that is recessed from the ABS and a rear edge. The main pole has a write tip that extends approximately to the ABS. The transducer further includes a write coil having a first layer of turns below the adjunct pole and above the shield material. The magnetic head also includes a heating element with a portion of the heating element below the write coil and behind the rear edge of the adjunct pole.
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Song Suping
Stoev Kroum S.
Heinz A. J.
Western Digital (Fremont) , LLC
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