Perpendicular magnetic recording head having a recessed magnetic base layer
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United States of America Patent
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Dec 13, 2011
Grant Date -
N/A
app pub date -
Nov 19, 2007
filing date -
Nov 19, 2007
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A method and system for providing a magnetic transducer having an air-bearing surface (ABS) are described. The magnetic transducer includes a base layer, a perpendicular magnetic recording (PMR) pole on the base layer, an additional pole, a write shield, a write gap between the PMR pole and a portion of the write shield, and coil(s) that energize at least the additional pole. The base layer includes a first portion proximate to the ABS and a second portion recessed from the ABS. The first portion is nonmagnetic, while the second portion is magnetic. The PMR pole has a first front portion proximate to the ABS. The additional pole has a second front portion recessed from the ABS. At least a portion of the additional pole resides between the PMR pole and write shield. At least a portion of the write gap resides on the front portion of the PMR pole.
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