Interlayer for device including NFT and cladding layers

Patent metadata

Field	Value
Publication number	US-9601135-B2
Application number	US-201514607248-A
Country	US
Kind code	B2
Filing date	Jan 28, 2015
Priority date	Jun 29, 2012
Publication date	Mar 21, 2017
Grant date	Mar 21, 2017

Abstract

A device that includes a near field transducer (NFT); at least one cladding layer adjacent the NFT; and a discontinuous metal layer positioned between the NFT and the at least one cladding layer.

First claim

What is claimed is:

1. A device comprising:
a near field transducer (NFT);
at least one cladding layer adjacent the NFT, the cladding layer comprising
SiO 2 ; Al 2 O 3 ; MgO; TaSiO x ; MgF 2 ; SiON; Y 2 O 3 ;
binary oxides of a metal oxide (MeO x ) and AlO x , where Me is Ti, Hf, Zr, Nb, and Ta and 0<x<3.0;
binary oxides of Y 2 O 3 and AlO x ;
binary oxides of SiO 2 and Al 2 O 3 ;
binary oxides of Y 2 O 3 and SiO 2 ; binary oxides of MeO x and SiO 2 where Me is Ti, Hf, Zr, Nb, and Ta and 0<x<3.0;
SiO x N y , where 0<x<2.0 and 0<y<1.33; or
combinations thereof; and

a discontinuous metal layer positioned between the NFT and the at least one cladding layer.

2. The device according to claim 1 , wherein the at least one cladding layer comprises: SiO 2 , Al 2 O 3 , MgO, Y 2 O 3 , TaSiO x , MgF 2 , SiON, or combinations thereof.

3. The device according to claim 1 , wherein the NFT comprises gold (Au), gold (Au) doped with another material, silver (Ag), silver (Ag) doped with another material, copper (Cu), or aluminum (Al).

4. The device according to claim 1 , wherein the NFT comprises gold.

5. The device according to claim 1 , wherein the discontinuous metal layer has an average thickness of from about 2.5 Å to about 50 Å.

6. The device according to claim 1 , wherein the discontinuous metal layer has an average thickness of from about 5 Å to about 30 Å.

7. The device according to claim 1 , wherein the discontinuous metal layer has an average thickness of from about 5 Å to about 20 Å.

8. The device according to claim 1 , wherein the discontinuous metal layer comprises an early 3d transition metals having large populations of unfilled states at the Fermi level.

9. The device according to claim 1 , wherein the discontinuous metal layer comprises a material selected from: Zr, Ti, Y, Sc, Al, Ru, V, Si, Ge, Ta, and Sn.

10. The device according to claim 1 , wherein the discontinuous metal layer comprises Zr.

11. A device comprising:
a near field transducer (NFT);
at least one cladding layer adjacent the NFT, the cladding layer comprising SiO 2 , Al 2 O 3 , MgO, Y 2 O 3 , TaSiO x , MgF 2 , SiON, or combinations thereof; and
a discontinuous metal layer positioned between the NFT and the at least one cladding layer.

12. The device according to claim 11 , wherein the NFT comprises gold (Au), gold (Au) doped with another material, silver (Ag), silver (Ag) doped with another material, copper (Cu), or aluminum (Al).

13. The device according to claim 11 , wherein the NFT comprises gold.

14. The device according to claim 11 , wherein the discontinuous metal layer has an average thickness of from about 2.5 Å to about 50 Å.

15. The device according to claim 11 , wherein the discontinuous metal layer has an average thickness of from about 5 Å to about 30 Å.

16. The device according to claim 11 , wherein the discontinuous metal layer has an average thickness of from about 5 Å to about 20 Å.

17. A device comprising:
an energy source;
a near field transducer (NFT) configured to receive energy from the energy source;
at least one cladding layer adjacent the NFT, the at least one cladding layer comprising SiO 2 , Al 2 O 3 , MgO, Y 2 O 3 , TaSiO x , MgF 2 , SiON, or combinations thereof; and
a discontinuous metal layer positioned between the NFT and the at least one cladding layer.

18. The device according to claim 17 , wherein the energy source comprises a laser.

19. The device according to claim 17 , wherein the discontinuous metal layer comprises a material selected from: Zr, Ti, Y, Sc, Al, Ru, V, Si, Ge, Ta, and Sn.

20. The device according to claim 17 , wherein the discontinuous metal layer comprises Zr.

Assignees

• Seagate Technhology Llc
• Seagate Technology Llc

Inventors

• Zhao Tong
• Kautzky Michael Christopher
• Seigler Michael Allen
• Zhao Yongjun
• Jayashankar Jay
• Huang Xiaoyue

Classifications

• G11B5/6088

  Optical waveguide in or on flying head · CPC title

• G11B5/314 Primary

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

• G11B11/10536

  using thermic beams, e.g. lasers · CPC title

• G11B2005/0021

  Thermally assisted recording using an auxiliary energy source for heating the recording layer locally to assist the magnetization reversal · CPC title

• Y10T428/1171

  with defined laminate structural detail · CPC title