Magnetic head for perpendicular magnetic recording with encasing layer
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United States of America Patent
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Feb 16, 2010
Grant Date -
Nov 16, 2006
app pub date -
May 16, 2005
filing date -
May 16, 2005
priority date (Note) -
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status (Latency Note)
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Abstract
A pole layer has: a first portion having an end face located in a medium facing surface; and a second portion that is located farther from the medium facing surface than the first portion and has a thickness greater than that of the first portion. A surface of the first portion farther from a substrate is located closer to the substrate than a surface of the second portion farther from the substrate. The second portion has a front end face that couples the surface of the first portion farther from the substrate to the surface of the second portion farther from the substrate. A shield layer has a portion located between the front end face and the medium facing surface in a region closer to the substrate than the surface of the second portion farther from the substrate.
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