Magnetic head for perpendicular magnetic recording including a main pole and a write shield to provide improved write characteristics without compromising the function of the write shield
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United States of America Patent
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Jul 14, 2015
Grant Date -
Jun 18, 2015
app pub date -
Dec 16, 2013
filing date -
Dec 16, 2013
priority date (Note) -
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Abstract
A magnetic head includes a main pole, a write shield, and first and second nonmagnetic layers. The main pole has a top surface including an inclined surface portion. The write shield includes an inclined portion facing toward the top surface of the main pole. The first nonmagnetic layer is interposed between the inclined surface portion and the inclined portion. The second nonmagnetic layer is interposed between the first nonmagnetic layer and the inclined portion. The first nonmagnetic layer has a first front end located in a medium facing surface. The second nonmagnetic layer has a second front end that is located closest to but at a distance from the medium facing surface.
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