Perpendicular magnetic recording and reproducing head
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United States of America Patent
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Jul 29, 2008
Grant Date -
Jan 4, 2007
app pub date -
Sep 8, 2006
filing date -
May 31, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
There is provided a perpendicular magnetic recording and reproducing system in which the overwrite erase ratio of a perpendicular magnetic head has been improved to prevent the deterioration of an overwrite property. In the perpendicular magnetic head, a third magnetic pole composed of a soft magnetic layer is formed on the leading side of a recording magnetic pole via a non-magnetic layer, thereby reducing magnetic interference from magnetization on a medium with the recording magnetic pole and preventing the deterioration of the overwrite property.
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