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US 2009/0154021 A1Published application
Perpendicular magnetic recording head
OwnerIsao Nunokawa, Mikito Sugiyama +2inventors
InventorsIsao Nunokawa, Mikito Sugiyama, Kikuo Kusukawa, Hiroyuki Hoshiya
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Abstract
Embodiments of the present invention provide a magnetic head that can stably supply a perpendicular magnetic field component while generating high recording field strength from a main pole. According to one embodiment, a magnetic body is deposited in a trailing side of a pole tip of a main pole via a nonmagnetic layer, so that a second flare section is magnetically coupled with each sidewall.
Claims12
A perpendicular magnetic recording head having:
- a main pole,
- an auxiliary pole,
- a shield disposed at a trailing side of the main pole and on both sides in a track width direction of the main pole, and
- a coil for generating a recording field from the main pole,
- wherein the main pole has a throat height region that defines writing/recording width, and a flare section that is situated in an upper part in an element height direction with respect to the throat height region, and gradually expands in width toward an upside in the element height direction, and
- wherein a second flare section is provided which includes a magnetic layer coated in a trailing side of the flare section via a non magnetic layer.
3 more elements
A magnetic recording/reproducing device comprising:
- a magnetic disk recording medium rotationally configured to be rotationally driven by a motor;
- a slider fixed to a tip of a suspension arm configured to be moveable onto a predetermined position on the magnetic disk recording medium;
- and
- a thin film magnetic head formed on the slider, the thin film magnetic head comprising a perpendicular magnetic recording head having,
- a main pole,
- an auxiliary pole,
- a shield disposed at a trailing side of the main pole and on both sides in a track width direction of the main pole, and
- a coil for generating a recording field from the main pole,
- wherein the main pole has a throat height region that defines writing/recording width, and a flare section that is situated in an upper part in an element height direction with respect to the throat height region, and gradually expands in width toward an upside in the element height direction, and
- wherein a second flare section is provided which includes a magnetic layer coated in a trailing side of the flare section via a non magnetic layer.
7 more elements
Dependencies are inferred from the claim text.