Magnetic head for perpendicular magnetic recording
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United States of America Patent
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-
Jul 3, 2012
Grant Date -
Jul 14, 2011
app pub date -
Mar 18, 2011
filing date -
Oct 13, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
A magnetic layer for writing incorporates: a pole layer having an end face located in a medium facing surface; and an upper yoke layer. A first magnetic layer for flux concentration is connected to the pole layer at a location away from the medium facing surface, and passes a magnetic flux corresponding to a magnetic field generated by a first coil. A second magnetic layer for flux concentration is connected to the upper yoke layer at a location away from the medium facing surface, and passes a magnetic flux corresponding to a magnetic field generated by a second coil. A nonmagnetic layer is disposed between the pole layer and the upper yoke layer. The upper yoke layer is connected to the pole layer at a location closer to the medium facing surface than the nonmagnetic layer.
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