Perpendicular magnetic recording element, thin film magnetic head, magnetic head device, and magnetic recording/reproducing apparatus for reducing deleterious effects of external magnetic fields
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United States of America Patent
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Jun 2, 2009
Grant Date -
Sep 14, 2006
app pub date -
Jan 24, 2006
filing date -
Mar 11, 2005
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A perpendicular magnetic recording element includes a recording magnetic pole film and a write shield film. The recording magnetic pole film has a yoke portion and a main magnetic pole for perpendicular recording. The main magnetic pole projects from a front end of the yoke portion to have an end on a medium-facing surface. The write shield film faces the recording magnetic pole film and has a height equal to or smaller than that of the recording magnetic pole film, as measured rearward from the medium-facing surface.
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