Hgst Netherlands, B.v.

Yosuke Urakami

Kazue Kudo

Hiromi Shiina

Masato Shiimoto

Shouji Tokutake

Masafumi Mochizuki

Mikito Sugiyama

Hiroyuki Katada

Kaori Suzuki

Jun Aoyama

The present disclosure generally relates to the structure of a perpendicular magnetic write head for use in a magnetic disk drive. A shingled-microwave-assisted magnetic recording head for use in a high-areal-density hard disk drive comprises a trailing shield, a flare-shaped main pole, one or more side shields, a spin torque oscillator, and two asymmetric side gaps, where one side gap has a smaller width than the other side gap. The spin torque oscillator shares a first continuous edge with the main pole on a side adjacent the side gap having the smaller width and shares a second continuous edge adjacent a media facing surface. The angle of the spin torque oscillator and the main pole formed by the media facing surface and the narrow side gap is greater than about 90&#xb0;.

Asymmetric MAMR head with self-aligned spin torque oscillator along flare edge for shingled magnetic recording

Embodiments described herein generally relate to a magnetic read head wherein read sensitivity distribution is made asymmetric in the off-track direction. The method of making the magnetic head is also disclosed. The read head may comprise a magneto-resistive effect element with an asymmetric structure around the element in the off-track direction and the read sensitivity profile in the off-track direction may also be asymmetric.

Asymmetric sensitivity reader

In one embodiment, a magnetic head includes a main pole adapted for producing a writing magnetic field, a trailing shield positioned on a trailing side of the main pole, wherein a trailing gap is positioned between the trailing shield and the main pole, and a side shield positioned on at least one side of the main pole in a cross-track direction, wherein a side gap is positioned between the side shield and the main pole, wherein the main pole has an asymmetrical shape at an air bearing surface (ABS) thereof. In another embodiment, a method may be employed for forming a magnetic head having a main pole that has an asymmetrical shape at an ABS thereof.

Asymmetric trailing shield writer for shingled magnetic recording (SMR)

In one embodiment, a perpendicular magnetic recording head includes a main pole configured to write data to a magnetic medium, a leading-side magnetic shield positioned on a leading side of the main pole in a down-track direction adjacent a media-facing surface of the head, and a trailing-side magnetic shield positioned on a trailing side of the main pole in the down-track direction adjacent the media-facing surface of the head, wherein a trailing side taper is provided on the trailing side of the main pole in the down-track direction, wherein a leading shield taper is provided on a main pole side of the leading-side magnetic shield, and wherein an angle of the trailing side taper relative to a line extending along an element height direction is less than or equal to an angle of the leading shield taper relative to the line extending along the element height direction.

Perpendicular magnetic recording head having a trailing side taper angle which is less than a leading side taper angle

In one embodiment, a magnetic head includes a main pole, a trailing shield positioned near a trailing side of the main pole, a side shield positioned near both sides of the main pole in a cross-track direction, a leading shield positioned near a leading side of the main pole, and a gap positioned between the main pole and the shields, characterized in that Sg&#x3c;Sgwherein Sgis a distance in the cross-track direction between a bending point of a leading edge of the trailing shield and a trailing corner of the main pole nearest to the bending point, and Sgis a distance in the cross-track direction between a first point on an edge of the side shield parallel in the cross-track direction to the trailing corner of the main pole and the trailing corner of the main pole nearest to the first point.

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Odawara, Japan

Yosuke Urakami