Magnetic recording device
AssigneeCarnegie Mellon University
InventorsHai Li, Jian-Gang Zhu
Life of this patent
Estimating the term…
Abstract
A recording head includes a near-field transducer configured to heat one or more portions of a magnetic storage layer to generate a thermal profile in the magnetic storage layer. The recording head includes a write pole configured to generate a magnetization pattern, in the magnetic storage layer, that overlaps with the thermal profile in the magnetic storage layer. The write pole includes a non-uniform surface that faces the magnetic storage layer, the non-uniform surface configured to cause a portion of the magnetization pattern to be approximately linear.
Claims24
A recording head comprising:
- a near-field transducer configured to heat one or more portions of a magnetic storage layer to generate a thermal profile in the magnetic storage layer;
- and
- a write pole configured to generate a magnetization pattern, in the magnetic storage layer, that overlaps with the thermal profile in the magnetic storage layer;
- wherein the write pole comprises a non-uniform surface that faces the magnetic storage layer, the non-uniform surface configured to cause a portion of the magnetization pattern to be approximately linear.
A recording head for heat-assisted magnetic recording, the recording head comprising:
- a near-field transducer configured to generate a thermal profile in a magnetic storage layer of a data storage device;
- and
- a write head configured to generate a magnetization pattern in the magnetic storage layer of the data storage device that overlaps with the thermal profile of the magnetic storage layer, the write head comprising:
- a return pole;
- and
- a write pole connected to the return pole and positioned between the near-field transducer and the return pole, the write pole comprising a surface parallel to the magnetic storage layer,
- wherein the write pole comprises a first side facing the return pole and a second side facing the near-field transducer, with the second side being positioned in the write pole and opposite to the first side,
- wherein the write pole is tapered on both a third side and a fourth side that is positioned in the write pole opposite to the third side, and
- wherein the surface comprises an indent extending from the first side of the write pole to the second side of the write pole.
Dependencies are inferred from the claim text.