Materials for near field transducers and near field transducers containing same

Patent metadata

Field	Value
Publication number	US-10134436-B2
Application number	US-201815871781-A
Country	US
Kind code	B2
Filing date	Jan 15, 2018
Priority date	Jun 24, 2013
Publication date	Nov 20, 2018
Grant date	Nov 20, 2018

Abstract

A method of forming a near field transducer (NFT) layer, the method including depositing a film of a primary element, the film having a film thickness and a film expanse; and implanting at least one secondary element into the primary element, wherein the NFT layer includes the film of the primary element doped with the at least one secondary element.

First claim

What is claimed is:

1. A method of forming a near field transducer (NFT) layer, the method comprising:
depositing a film of a primary element, the film having a film thickness and a film expanse;
depositing a seed layer that comprises a secondary element;
annealing the film of the primary element and the seed layer of the secondary element,
wherein the NFT layer comprises the film of the primary element and at least some of the secondary element.

2. A method of forming a peg of a near field transducer (NFT), the method comprising:
depositing a primary element to form a primary element film or layer;
depositing a seed layer comprising a secondary element;
annealing the primary element film or layer and the seed layer; and
defining a peg of the NFT from at least the primary element film or layer;
forming the peg of the NFT.

3. A method of forming a plurality of magnetic heads, each of the magnetic heads comprising an alloyed peg of a NFT, the method comprising:
depositing a seed layer comprising a secondary element;
depositing a primary element on a substrate to form a primary element film or layer;
annealing at least the seed layer and the primary element film;
forming a plurality of pegs of the NFTs; and
slicing the substrate into rows, each row containing a plurality of pegs;
depositing head overcoat material on each row.

4. The method according to claim 3 further comprising depositing additional head overcoat material.

5. The method according to claim 1 , wherein the secondary atom can be selected from: boron (B), bismuth (Bi), indium (In), sulfur (S), silicon (Si), tin (Sn), manganese (Mn), tellurium (Te), holmium (Ho), lutetium (Lu), praseodymium (Pr), scandium (Sc), uranium (U), barium (Ba), chlorine (Cl), cesium (Cs), dysprosium (Dy), europium (Eu), fluorine (F), germanium (Ge), hydrogen (H), iodine (I), rubidium (Rb), selenium (Se), terbium (Tb), cesium (Cs), carbon (C), antimony (Sb), gadolinium (Gd), samarium (Sm), thallium (Tl), hafnium (Hf), niobium (Nb), manganese (Mn), erbium (Er), zinc (Zn), nitrogen (N), oxygen (O), osmium (Os), phosphorus (P), rhenium (Re), beryllium (Be), yttrium (Y), sodium (Na), strontium (Sr), thulium (Tm), promethium (Pm), lanthanum (La), cerium (Ce), cobalt (Co), nickel (Ni), neodymium (Nd), ytterbium (Yb), lead (Pb), magnesium (Mg), calcium (Ca), iron (Fe), molybdenum (Mo), zirconium (Zr), chromium (Cr), gallium (Ga), potassium (K), lithium (Li), rhodium (Rh), vanadium (V), titanium (Ti), tantalum (Ta), platinum (Pt), thorium (Th), cadmium (Cd), palladium (Pd), technetium (Tc), ruthenium (Ru), tungsten (W), mercury (Hg), or combinations thereof.

6. The method according to claim l, wherein the secondary element is selected from: silver (Ag), copper (Cu), aluminum (Al), gold (Au) or combinations thereof.

7. The method according to claim l, wherein the primary element is selected from: silver (Ag), copper (Cu), or aluminum (Al).

8. the method according to claim l, wherein the primary element is silver (Ag); and at least one secondary element can be selected from: sodium (Na), thallium (Tl), bismuth (Bi), lead (Pb), potassium (K), cesium (Cs), rubidium (Rb), beryllium (Be), boron (B), manganese (Mn), or combinations thereof.

9. The method according to claim 1 , wherein the primary element is silver (Ag); and the secondary element can be selected from: sodium (Na), strontium (Sr), calcium (Ca), boron (B), scandium (Sc), carbon (C), beryllium (Be), yttrium (Y), thorium (Th), antimony (Sb), lead (Pb), tin (Sn), thallium (Tl), lutetium (Lu), thulium (Tm), erbium (Er), holmium (Ho), ytterbium (Yb), gadolinium (Gd), samarium (Sm), promethium (Pm), praseodymium (Pr), sulfur (S), neodymium (Nd), phosphorus (P), cerium (Ce), lanthanum (La), iron (Fe), nitrogen (N), oxygen (O), molybdenum (Mo), and combinations thereof.

10. The method according to claim 1 , wherein the primary element is silver (Ag); and at least one secondary element can be selected from: cobalt (Co), nickel (Ni), copper (Cu), zirconium (Zr), magnesium (Mg), or combinations thereof.

11. The method according to claim 1 , wherein the primary element is silver (Ag); and at least one secondary element can be selected from: gold (Au), palladium (Pd), platinum (Pt), aluminum (Al), or combinations thereof.

12. The method according to claim 1 , wherein the primary element is copper (Cu); and at least one secondary element is selected from: cadmium (Cd), mercury (Hg), indium (In), antimony (Sb), sodium (Na), thallium (Tl), potassium (K), cesium (Cs), rubidium (Rb), bismuth (Bi), lead (Pb), tin (Sn), or combinations thereof.

13. The method according to claim 1 , wherein the primary element is copper (Cu); and the secondary element comprises at least silver (Ag).

14. The method according to claim 1 , wherein the primary element is aluminum ; (Al); and at least one secondary element is selected from: boron (B), beryllium (Be), antimony (Sb), tin (Sn), mercury (Hg), indium (In), lead (Pb), bismuth (Bi), thallium (Tl), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), or combinations thereof.

15. The method according to claim 2 , wherein the secondary atom can be selected from: boron (B), bismuth (Bi), indium (In), sulfur (S), silicon (Si), tin (Sn), manganese (Mn), tellurium (Te), holmium (Ho), lutetium (Lu), praseodymium (Pr), scandium (Sc), uranium (U), barium (Ba), chlorine (Cl), cesium (Cs), dysprosium (Dy), europium (Eu), fluorine (F), germanium (Ge), hydrogen (H), iodine (I), rubidium (Rb), selenium (Se), terbium (Tb), cesium (Cs), carbon (C), antimony (Sb), gadolinium (Gd), samarium (Sm), thallium (Tl), hafnium (Hf), niobium (Nb), manganese (Mn), erbium (Er), zinc (Zn), nitrogen (N), oxygen (O), osmium (Os), phosphorus (P), rhenium (Re), beryllium (Be), yttrium (Y), sodium (Na), strontium (Sr), thulium (Tm), promethium (Pm), lanthanum (La), cerium (Ce), cobalt (Co), nickel (Ni), neodymium (Nd), ytterbium (Yb), lead (Pb), magnesium (Mg), calcium (Ca), iron (Fe), molybdenum (Mo), zirconium (Zr), chromium (Cr), gallium (Ga), potassium (K), lithium (Li), rhodium (Rh), vanadium (V), titanium (Ti), tantalum (Ta), platinum (Pt), thorium (Th), cadmium (Cd), palladium (Pd), technetium (Tc), ruthenium (Ru), tungsten (W), mercury (Hg), or combinations thereof.

16. The method according to claim 2 , wherein the secondary element is selected from: silver (Ag), copper (Cu), aluminum (Al), gold (Au) or combinations thereof.

17. The method according to claim 2 , wherein the primary element is selected from: silver (Ag), copper (Cu), or aluminum (Al).

18. The method according to claim 2 , wherein the primary element is silver (Ag); and the secondary element can be selected from: sodium (Na), strontium (Sr), calcium (Ca), boron (B), scandium (Sc), carbon (C), beryllium (Be), yttrium (Y), thorium (Th), antimony (Sb), lead (Pb), tin (Sn), thallium (Tl), lutetium (Lu), thulium (Tm), erbium (Er), holmium (Ho), ytterbium (Yb), gadolinium (Gd), samarium (Sm), promethium (Pm), praseodymium (Pr), sulfur (S), neodymium (Nd), phosphorus (P), cerium (Ce), lanthanum (La), iron (Fe), nitrogen (N), oxygen (O), molybdenum (Mo), and combinations thereof.

19. The method according to claim 2 , wherein the primary element is silver (Ag); and at least one secondary element can be selected from: cobalt (Co), nickel (Ni), copper (Cu), zirconium (Zr), magnesium (Mg), or combinations thereof.

20. The method according to claim 2 , wherein the primary element is silver (Ag); and at least one secondary element can be selected from: gold (Au), palladium (Pd), platinum

Assignees

• Seagate Technology Llc

Inventors

• Jayashankar Sethuraman
• Kautzky Michael C

Classifications

• C22C22/00

  Alloys based on manganese · CPC title

• G11B7/24059

  specially adapted for near-field recording or reproduction · CPC title

• C22C5/10

  with cadmium as the next major constituent · CPC title

• C22C19/07

  based on cobalt · CPC title

• B32B15/01 Primary

  all layers being exclusively metallic {(making layered metal workpieces by pressure cladding B23K20/22; making coatings with a metallic material characterised by its composition C23C30/00)} · CPC title