Magnetic head for perpendicular recording and magnetic disk storage apparatus mounting the head
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United States of America Patent
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Mar 23, 2004
Grant Date -
N/A
app pub date -
Feb 14, 2003
filing date -
Nov 15, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A magnetic head is composed to diminish disordered writing bits of a recording layer or reading noise caused by a magnetic field generated from an under layer without decreasing a writing magnetic field strength of the magnetic head. The magnetic head includes a write head provided with a main pole and one or more auxiliary poles, a read head provided with a read element, and coils located on both sides of the main pole in a manner to sandwich the main pole. The coil located on one side generates the asymmetrical magneto-motive force for magnetizing the main pole to that generated by the coil located on the other side.
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