Magnetic head for perpendicular recording and magnetic disk...

Details Magnetic head for perpendicular recording and magnetic disk... Magnetic head for perpendicular recording and magnetic disk...

2006-04-18

2006-04-18

Tupper, Robert S. (Department: 2652)

Dynamic magnetic information storage or retrieval

Head

Coil

C360S125020

Reexamination Certificate

active

07031108

ABSTRACT:
A magnetic head is composed to diminish disordered writing bits of a recording layer or reading noise caused by a magnetic field generated from an under layer without decreasing a writing magnetic field strength of the magnetic head. The magnetic head includes a write head provided with a main pole and one or more auxiliary poles, a read head provided with a read element, and coils located on both sides of the main pole in a manner to sandwich the main pole. The coil located on one side generates the asymmetrical magneto-motive force for magnetizing the main pole to that generated by the coil located on the other side.

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IEEE Transactions on Magnetics, vol. 38, No. 1, Jan. 2002, “A New Single-Pole Head Structure for High Writability”, K. Yamakawa et al, pp. 163-168.

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