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US 2009/0154013 A1Published application
Perpendicular magnetic recording head and method of manufacturing the same
AssigneeHGST Netherlands B.V.
InventorsMikito Sugiyama, Isao Nunokawa, Hiroyuki Hoshiya
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Abstract
Embodiments of the present invention provide a perpendicular magnetic recording head which can suppress reduction in recording field and efficiently reduce a fringe field. According to one embodiment, a side shield disposed at a side of each side face in a cross track direction of a main pole is arranged at a far leading side compared with the main pole.
Claims11
A perpendicular magnetic recording head comprising:
- a main pole having an air-bearing surface in an inverted trapezoidal shape,
- a trailing shield situated at a trailing side of the main pole, and
- a side shield situated at both sides in a cross track direction of the main pole,
- wherein a leading side end of the side shield is situated at a far leading side compared with a leading side end of the main pole.
1 more element
A method of manufacturing a perpendicular magnetic recording head, the method comprising:
- depositing a magnetic film for a main pole on an inorganic insulating film,
- depositing a nonmagnetic film thereon,
- forming a mask corresponding to track width thereon,
- processing the magnetic film for a main pole into an inverted trapezoidal shape by ion milling using the mask,
- thinning the inorganic insulating film under the processed magnetic film for a main pole by reactive ion milling at a right angle or a larger angle than it,
- depositing a nonmagnetic film to be a side gap film, and
- forming a magnetic film for shielding.
4 more elements
Dependencies are inferred from the claim text.