Heat assisted magnetic recording writer having a notched write pole
AssigneeSeagate Technology LLC
InventorsJames G. Wessel, Manish Kapoor, Jianhua Xue
Life of this patent
Estimating the term…
Abstract
Described is a recording head that includes a notched write pole to enhance perpendicularity of the write pole field. The write pole notch is formed at the media-facing surface and the leading edge of the write pole. The write pole notch is filled with a non-magnetic metal. The recording head further includes a near field transducer located in front of the leading edge of the write pole and having a portion extending to the media-facing surface that is spaced apart from the notch, thereby forming a gap between the near field transducer and the notch.
Claims20
A recording head comprising:
- a write pole extending to a media-facing surface and having a leading edge and a trailing edge relative to movement of a storage media in a down-track direction;
- a notch extending into the write pole from the leading edge, the notch being filled with a non-magnetic metal;
- and
- a near field transducer having a portion extending to the media-facing surface that is positioned in front of and spaced a distance apart from the notch.
A recording head comprising:
- a write pole extending to a media-facing surface and having a leading edge and a trailing edge relative to movement of a storage media in a down-track direction;
- a notch extending into the write pole from the leading edge;
- and
- a near field transducer located in front of the leading edge of the write pole and having a portion extending to the media-facing surface, said portion being spaced apart from the notch in the down-track direction, thereby forming a gap between the near field transducer and the notch, the gap being filled with an insulating material that is different from a material filling the notch.
A recording head comprising:
- a write pole extending to a media-facing surface and having a leading edge and a trailing edge relative to movement of a storage media in a down-track direction;
- and
- a notch extending into the write pole from the leading edge, the notch being filled with a non-magnetic metal, wherein the notch is elliptical or arcuate in shape.
Dependencies are inferred from the claim text.