Near-field transducer peg encapsulation

Patent metadata

Field	Value
Publication number	US-9336800-B2
Application number	US-201514816341-A
Country	US
Kind code	B2
Filing date	Aug 3, 2015
Priority date	Jun 24, 2013
Publication date	May 10, 2016
Grant date	May 10, 2016

Abstract

A near field transducer with a peg region, an enlarged region disposed adjacent the peg region, and a barrier material disposed between the peg region and the enlarged region. The barrier material reduces or eliminates interdiffusion of material between the peg region and the enlarged region.

First claim

What is claimed is:

1. An apparatus, comprising:
a near field transducer comprising a peg region and an enlarged region disposed adjacent the peg region; and
a barrier material separating the peg region from the enlarged region, the barrier material configured to reduce or eliminate interdiffusion of material between the peg region and the enlarged region;
wherein the peg region remains in one or both of optical and electrical communication with the enlarged region.

2. The apparatus of claim 1 , wherein the peg region comprises a plasmonic metal.

3. The apparatus of claim 2 , wherein the enlarged region comprises a second plasmonic metal that has a same composition as the plasmonic metal of the peg region.

4. The apparatus of claim 1 , wherein the barrier material comprises one or more of ZrN, TiN, Rh, Zr, Hf, Ru, AuN, AuO, TaN, Ir, W, Mo, Co, and alloys thereof.

5. The apparatus of claim 1 , wherein the barrier material comprises one or more layers that separate the peg region from the enlarged region.

6. The apparatus claim 1 , wherein the barrier material extends along a non-media interfacing end of the peg region.

7. The apparatus of claim 1 , wherein the barrier material has a thickness of between about 1.0 nm and about 10.0 nm.

8. The apparatus of claim 1 , wherein the barrier material is disposed only between the enlarged region and the peg region.

9. The apparatus of claim 1 , wherein the barrier material is disposed between the enlarged region and the peg region and along one or more additional surfaces of the enlarged region.

10. The apparatus of claim 1 , wherein the enlarged region is a disk shaped object.

11. An apparatus, comprising:
a slider;
a reader and a writer at the slider;
an optical waveguide at the slider;
a near field transducer at the slider proximate the writer and the optical waveguide, the near field transducer comprising a peg region and an enlarged region disposed adjacent the peg region; and
a barrier material separating the peg region from the enlarged region, the barrier material configured to reduce or eliminate interdiffusion of material between the peg region and the enlarged region, wherein the peg region remains in one or both of optical and electrical communication with the enlarged region.

12. The apparatus of claim 11 , wherein the peg region comprises a plasmonic metal.

13. The apparatus of claim 12 , wherein the enlarged region comprises a second plasmonic metal that has a same composition as the plasmonic metal of the peg region.

14. The apparatus of claim 11 , wherein the barrier material comprises one or more of ZrN, TiN, Rh, Zr, Hf, Ru, AuN, AuO, TaN, Ir, W, Mo, Co, and alloys thereof.

15. The apparatus of claim 11 , wherein the barrier material comprises one or more layers that separate the peg region from the enlarged region.

16. The apparatus claim 11 , wherein the barrier material extends along a non-media interfacing end of the peg region.

17. The apparatus of claim 11 , wherein the barrier material has a thickness of between about 1.0 nm and about 10.0 nm.

18. The apparatus of claim 11 , wherein the barrier material is disposed only between the enlarged region and the peg region.

19. The apparatus of claim 11 , wherein the barrier material is disposed between the enlarged region and the peg region and along one or more additional surfaces of the enlarged region.

20. The apparatus of claim 11 , wherein the enlarged region is a disk shaped object.

Assignees

• Seagate Technology Llc

Inventors

• Wessel James Gary
• Sahoo Sarbeswar
• Kautzky Michael Christopher

Classifications

• G11B5/3133

  including layers not usually being a part of the electromagnetic transducer structure and providing additional features, e.g. for improving heat radiation, reduction of power dissipation, adaptations for measurement or indication of gap depth or other properties of the structure (G11B5/3106 takes precedence) · CPC title

• G02B6/1226

  involving surface plasmon interaction · CPC title

• G11B5/314

  where the layers are extra layers normally not provided in the transducing structure, e.g. optical layers (G11B5/3196 takes precedence) · CPC title

• G11B5/1278

  specially adapted for magnetisations perpendicular to the surface of the record carrier · CPC title

• G11B5/012

  Recording on, or reproducing or erasing from, magnetic disks (G11B17/00, G11B19/00 take precedence) · CPC title