Magnetic recording head for perpendicular recording with wrap around shield, the fabrication process and magnetic disk storage apparatus mounting the magnetic head
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United States of America Patent
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Jun 19, 2012
Grant Date -
Apr 20, 2006
app pub date -
Oct 18, 2005
filing date -
Oct 20, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Embodiments of the invention are directed to narrowing a read/write gap of a perpendicular magnetic head by applying a wrap around shield, data erasing from return pole edges by returning recording field, and reducing TPR of a magnetic material. In one embodiment, the wrap around shields are formed by partitioning and making Gd, which is the height of the shield at the main pole side in the sensor height direction, smaller than the height of the shield connected to the return pole in the sensor height direction.
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