公开(公告)号：US20220415354A1

公开(公告)日：2022-12-29

申请号：US17807260

申请日：2022-06-16

Applicant: Seagate Technology LLC

Inventor： Yuhang Cheng ,  Tae-Woo Lee ,  Michael A. Seigler ,  Yang Wu

IPC: G11B13/08 ,  G11B5/60 ,  G11B5/31

Abstract: A heat-assisted magnetic recording head includes a near-field transducer (NFT). The NFT includes a near-field emitter configured to heat a surface of a magnetic disk, and a plasmonic disk. The plasmonic disk is coupled to the near-field emitter and includes rhodium or iridium.

公开(公告)号：US20210210121A1

公开(公告)日：2021-07-08

申请号：US17207027

申请日：2021-03-19

Applicant: Seagate Technology LLC

Inventor： Robert D. Turner ,  Yuhang Cheng ,  Peter W. Kanas ,  Martin Liam McGarry ,  Peter Kevin McGeehin ,  Kevin R. Heim ,  Edward Charles Gage ,  Shaikh Mubassar Ali ,  Huazhou Lou

IPC: G11B33/14 ,  G11B13/08 ,  G11B5/31 ,  G11B5/012

Abstract: A heat-assisted magnetic recording device is disposed in a hermetically sealed enclosure. The device includes a slider comprising a reader, a writer, and an optical waveguide configured to couple light from a light source to a near-field transducer situated at or near an air bearing surface of the slider. The near-field transducer comprises an enlarged portion and a peg extending from the enlarged portion in a direction of the air bearing surface. A fill gas is provided within the enclosure. The fill gas comprises a mixture of a low-density, inert gas and at least one gas that oxidizes carbon, where the total carbon oxidizing gas concentration of the fill gas is 3-50% by volume. In certain embodiments, the fill gas comprises a hydrogen concentration sufficient to retard oxidation of the peg when the peg is at an operating temperature associated with write operations.

公开(公告)号：US10832717B1

公开(公告)日：2020-11-10

申请号：US16525918

申请日：2019-07-30

Applicant: Seagate Technology LLC

Inventor： Yuhang Cheng ,  Nan Zhou ,  Yongjun Zhao ,  Huaqing Yin ,  Weibin Chen ,  Michael Allen Seigler

IPC: G11B5/09 ,  G11B5/60 ,  G11B5/31 ,  G11B5/00

Abstract: A near-field transducer has an enlarged portion with a layer of soft plasmonic material. A peg formed of a thermally robust plasmonic material includes an embedded part that is partially embedded within the enlarged portion and has an exposed surface facing away from the enlarged portion. An intersection between a lower edge of the enlarged portion and the embedded part has a discontinuity.

公开(公告)号：US20200227086A1

公开(公告)日：2020-07-16

申请号：US16688656

申请日：2019-11-19

Applicant: SEAGATE TECHNOLOGY LLC

Inventor： Yuhang Cheng ,  Tong Zhao ,  Michael C. Kautzky ,  Ed F. Rejda ,  Kurt W. Wierman ,  Scott Franzen ,  Sethuraman Jayashankar ,  Sarbeswar Sahoo ,  Jie Gong ,  Michael Allen Seigler

IPC: G11B13/08 ,  G11B5/31 ,  G11B7/1387 ,  G11B7/24059 ,  G11B5/60 ,  C23C14/58 ,  C22C5/02 ,  C22C5/06 ,  C22C9/02 ,  C22C9/08 ,  C22C11/04 ,  C22C13/00 ,  C22C18/02 ,  C22C19/03 ,  C22C20/00 ,  C22C21/00 ,  C22C21/02 ,  C22C21/10 ,  C22C22/00 ,  C22C27/00 ,  C22C27/02 ,  C22C27/06 ,  C22C38/06 ,  G11B5/48 ,  C01F7/00 ,  C01G5/00

Abstract: A device including a near field transducer, the near field transducer including gold (Au) and at least one other secondary atom, the at least one other secondary atom selected from: boron (B), bismuth (Bi), indium (In), sulfur (S), silicon (Si), tin (Sn), hafnium (Hf), niobium (Nb), manganese (Mn), antimony (Sb), tellurium (Te), carbon (C), nitrogen (N), and oxygen (O), and combinations thereof; erbium (Er), holmium (Ho), lutetium (Lu), praseodymium (Pr), scandium (Sc), uranium (U), zinc (Zn), and combinations thereof; and barium (Ba), chlorine (Cl), cesium (Cs), dysprosium (Dy), europium (Eu), fluorine (F), gadolinium (Gd), germanium (Ge), hydrogen (H), iodine (I), osmium (Os), phosphorus (P), rubidium (Rb), rhenium (Re), selenium (Se), samarium (Sm), terbium (Tb), thallium (Th), and combinations thereof.

公开(公告)号：US20200224307A1

公开(公告)日：2020-07-16

申请号：US16726512

申请日：2019-12-24

Applicant: Seagate Technology LLC

Inventor： Tong Zhao ,  Michael C. Kautzky ,  Sarbeswar Sahoo ,  Justin Brons ,  Jie Gong ,  Yuhang Cheng

IPC: C23C14/58 ,  G11B5/31

Abstract: Devices having an air bearing surface (ABS), the device including a near field transducer, the near field transducer having a peg and a disc, the peg having a region adjacent the ABS, the peg including a plasmonic material selected from gold (Au), silver (Ag), copper (Cu), ruthenium (Ru), rhodium (Rh), aluminum (Al), or combinations thereof; and at least one other secondary atom selected from germanium (Ge), tellurium (Te), aluminum (Al), antimony (Sb), tin (Sn), mercury (Hg), indium (In), zinc (Zn), iron (Fe), copper (Cu), manganese (Mn), silver (Ag), chromium (Cr), cobalt (Co), and combinations thereof, wherein a concentration of the secondary atom is higher at the region of the peg adjacent the ABS than a concentration of the secondary atom throughout the bulk of the peg. Methods of forming NFTs are also disclosed.

公开(公告)号：US20190051319A1

公开(公告)日：2019-02-14

申请号：US16160661

申请日：2018-10-15

Applicant: SEAGATE TECHNOLOGY LLC

Inventor： Justin Brons ,  Tong Zhao ,  Yuhang Cheng ,  Dimitar V. Dimitrov

IPC: G11B5/31 ,  G11B5/00

CPC classification number: G11B5/314 ,  G11B5/3133 ,  G11B2005/0021

Abstract: Devices that include a near field transducer (NFT), the NFT having at least one external surface; and at least one multilayer adhesion layer positioned on at least a portion of the at least one external surface, the multilayer adhesion layer including a first layer and a second layer, with the second layer being in contact with the portion of the at least one external surface of the NFT, the first layer including: yttrium (Y), scandium (Sc), zirconium (Zr), hafnium (Hf), silicon (Si), boron (B), tantalum (Ta), barium (Ba), aluminum (Al), titanium (Ti), niobium (Nb), calcium (Ca), beryllium (Be), strontium (Sr), magnesium (Mg), lithium (Li), or combinations thereof; and the second layer including: lanthanum (La), boron (B), lutetium (Lu), aluminum (Al), deuterium (D), cerium (Ce), uranium (U), praseodymium (Pr), yttrium (Y), silicon (Si), iridium (Ir), carbon (C), thorium (Th), scandium (Sc), titanium (Ti), vanadium (V), phosphorus (P), barium (Ba), europium (Eu), or combinations thereof.

公开(公告)号：US10020011B2

公开(公告)日：2018-07-10

申请号：US15481856

申请日：2017-04-07

Applicant: SEAGATE TECHNOLOGY LLC

Inventor： Yuhang Cheng ,  Kurt W. Wierman ,  Michael Seigler ,  Xiaoyue Huang ,  Scott Franzen

IPC: G11B11/00 ,  G11B5/31 ,  C23C8/10 ,  C23C8/02 ,  C23C8/80 ,  G11B9/12 ,  G11B5/00

CPC classification number: G11B5/314 ,  C23C8/02 ,  C23C8/10 ,  C23C8/80 ,  G11B5/3106 ,  G11B9/12 ,  G11B2005/0021

Abstract: Devices that include a near field transducer (NFT); an amorphous gas barrier layer positioned on at least a portion of the NFT; and a wear resistance layer positioned on at least a portion of the gas barrier layer.

公开(公告)号：US10002626B1

公开(公告)日：2018-06-19

申请号：US15493306

申请日：2017-04-21

Applicant: Seagate Technology LLC

Inventor： Yuhang Cheng ,  Chubing Peng ,  Tae-Woo Lee ,  Xiaoyue Huang ,  Song Chen

IPC: G11B11/00 ,  G11B5/31 ,  G11B5/48

CPC classification number: G11B5/314 ,  G11B5/6088 ,  G11B2005/0021

Abstract: A waveguide core extends from an input coupler towards a media-facing surface of a read/write head. A cap is located between a terminating end of the waveguide core and the media-facing surface. The cap is formed of a high index of refraction, high-corrosion resistant material that is different than a material used to form the waveguide core. A near-field transducer is proximate the cap in a down-track direction. A head overcoat on the media-facing surface covers the cap.

公开(公告)号：US20180144765A1

公开(公告)日：2018-05-24

申请号：US15864480

申请日：2018-01-08

Applicant: SEAGATE TECHNOLOGY LLC

Inventor： Martin Blaber ,  Tong Zhao ,  Michael C. Kautzky ,  Justin Brons ,  John C. Duda ,  Yuhang Cheng ,  Michael A. Seigler

IPC: G11B5/31 ,  G11B5/00

CPC classification number: G11B5/314 ,  G11B5/3116 ,  G11B5/3133 ,  G11B2005/0021

Abstract: Devices that have an air bearing surface (ABS), the device includes a near field transducer (NFT) that includes a disc configured to convert photons incident thereon into plasmons; and a peg configured to couple plasmons coupled from the disc into an adjacent magnetic storage medium, wherein the disc includes a disc material that includes gold or an alloy thereof and the peg includes a peg material, wherein the disc material is different from the peg material and wherein the peg material has a real part of the permittivity that is not greater than that of gold.

公开(公告)号：US09842613B2

公开(公告)日：2017-12-12

申请号：US15089939

申请日：2016-04-04

Applicant: SEAGATE TECHNOLOGY LLC.

Inventor： Yuhang Cheng ,  Sami Antrazi ,  Michael Seigler ,  Scott Franzen ,  Philip G. Pitcher ,  Edwin F. Redja ,  Kurt W. Wierman

IPC: G11B5/31 ,  B44C1/22 ,  G11B5/00

CPC classification number: G11B5/3133 ,  G11B5/3116 ,  G11B5/313 ,  G11B5/314 ,  G11B5/3163 ,  G11B2005/0021

Abstract: Methods that include forming at least a portion of a near field transducer (NFT) structure; depositing a material onto at least one surface of the portion of the NFT to form a metal containing layer; and subjecting the metal containing layer to conditions that cause diffusion of at least a portion of the material into the at least one surface of the portion of the NFT; and devices formed thereby.