Hgst Netherlands, B.v.

Hgst Netherlands N.v.

Yusuke Takahashi

Kazue Kudo

Hiromi Shiina

Yohji Maruyama

Mikito Sugiyama

Kaori Suzuki

Kimitoshi Eto

Approaches for a magnetic write head having a hybrid material main pole, in which a first magnetic material has a first cross-sectional area (A1) and a second magnetic material has a second cross-sectional area (A2), and wherein the ratio A1/A2 reduces in a direction away from the air bearing surface. The first material comprises a high saturation magnetic flux density material, and the second material comprises a high magnetic permeability and low saturation magnetic flux density material having a lower saturation magnetic flux density than said first material.

Magnetic write head having a hybrid material main pole for high frequency recording

In one embodiment, a perpendicular magnetic head includes a main magnetic pole, a side shield disposed on both sides of the main magnetic pole in a track width direction, the side shield including a material having a saturation magnetic flux density of no greater than about 1.0 T, and a trailing shield disposed on a trailing side of the main magnetic pole, wherein the trailing shield and the side shield are physically separated from one another. In another embodiment, the side shield includes a first magnetic film, and the trailing shield includes a second magnetic film, wherein a magnetic permeability of the first magnetic film is lower than a magnetic permeability of the second magnetic film.

Low permeability material for a side shield in a perpendicular magnetic head

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Odawara, Japan

Yusuke Takahashi