Perpendicular magnetic recording head for high frequency drive
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United States of America Patent
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Jan 12, 2010
Grant Date -
Sep 14, 2006
app pub date -
Mar 8, 2006
filing date -
Mar 9, 2005
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Embodiments of the invention provide a perpendicular magnetic head with a narrow track and excellent high frequency characteristics. In one embodiment, a recording magnetic head includes coil conductors and magnetic pole pieces putting the same therebetween, in which a main magnetic pole piece is formed into a planar structure and a magnetic film connected with the main magnetic pole piece in a magnetic coupling relation is curved in the direction of the film thickness. Further, a shield material disposed near the main magnetic pole piece is made of a material of higher resistance than that of the material for the read shield.
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