Invention Grant
US08929028B2 Perpendicular magnetic write head having a laminated trailing return pole 有权
垂直写磁头具有层叠的后退磁极

Perpendicular magnetic write head having a laminated trailing return pole
Abstract:
A perpendicular magnetic write head having a laminated trailing return pole structure that reduces magnetic eddy currents in the return pole for improved write head efficiency. The trailing magnetic return pole includes multiple magnetic layers. Each magnetic layer is separated from an adjacent magnetic layer of the return pole by a non-magnetic layer. The non-magnetic layer terminates at a region that is removed from the air bearing surface in order to allow contact between the magnetic layers at the ABS, thereby preventing stray magnetic fields from emitting from the magnetic layers of the write pole.
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