| 摘要 |
A magnetic write design for reducing Wide Area Track Erasure (WATEr). The write head design includes a magnetic pole and a non-magnetic, electrically conductive eddy current confining structure (ECC structure) formed adjacent to the write pole at the air bearing surface (ABS). The design can be embodied in a longitudinal write head having a magnetic pole, such as a P2 pole pedestal, with a non-magnetic, electrically conductive material surrounding three sides of the pole. For further protection against WATEr, a first, or bottom pole (P1) can be constructed with a high permeability, high Bs material at the write gap, and a low permeability, low Bs material formed there under. Another layer of high permeability, high Bs material can optionally be provided beneath the low permeability low Bs material layer. The invention can also be embodied in a perpendicular write head having a write pole with a non-magnetic, electrically conductive material surrounding all or a portion of the write pole at the ABS.
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