Granted Patent B1

US 8,472,288 · App. 13/708,464 · Granted Jun 25, 2013

Abstract

Claims (13)

1. An energy assisted magnetic recording (EAMR) head for writing to a recording media, the EAMR head comprising:

a write pole for providing a magnetic field for writing to the recording media;

at least one laser for providing energy to the recording media to assist the writing; and

a near field transducer (NFT) disposed adjacent to the write pole and coupled with the at least one laser, the NFT configured to direct the energy to a corresponding thermal spot on the recording media,

wherein the NFT comprises a disk section and a pin section extending towards an air bearing surface (ABS) from the disk section, the pin section having a proximal end adjoining the disk section and a distal end opposite to the proximal end and facing the ABS, and

wherein the distal end of the pin section has a non-rectangular cross section in a plane parallel to the ABS and the proximal end of the pin section has a rectangular cross section in the plane parallel to the ABS.

2. The EAMR head of claim 1 , wherein the disk section comprises a substantially circular disk comprising Au.

3. The EAMR head of claim 1 , wherein the non-rectangular cross section has a polygonal shape selected from a group consisting of a triangle, a trapezoid, and a chevron.

4. The EAMR head of claim 1 , wherein the EAMR head is configured to write a plurality of radially-spaced overlapping data tracks on the recording media.

5. The EAMR head of claim 1 , wherein the corresponding spot has a width not less than a track pitch of the recording media.

6. The EAMR head of claim 1 , wherein the corresponding thermal spot does not extend into a region of the recording media below the write pole.

7. The EAMR head of claim 1 , wherein the disk portion of the NFT is coupled to the write pole via a metal layer.

8. The EAMR head of claim 1 , wherein the pin portion of the NFT is separated from the write pole by an electrically insulating layer.

Assignments (10)