公开(公告)号：US11996126B2

公开(公告)日：2024-05-28

申请号：US17957304

申请日：2022-09-30

Applicant: Headway Technologies, Inc.

Inventor： Koji Shimazawa ,  Shengyuan Wang ,  Yukinori Ikegawa

IPC: G11B5/31 ,  B82Y20/00 ,  G02B5/00 ,  G11B7/1387 ,  G11B5/00

CPC classification number: G11B5/314 ,  B82Y20/00 ,  G02B5/008 ,  G11B5/3163 ,  G11B7/1387 ,  G11B2005/0021

Abstract: The present embodiments relate to a heat-assisted magnetic recording (HAMR) write head with an iridium (Ir) film. The Ir film can include a body layer and a plasmon generator (PG) film comprising Iridium with a thin Ir seed layer. The Ir seed layer can be in direct contact with a dielectric (aluminum oxide). The thickness of the Ir film can be 40 nanometers or less including both a body layer and the seed layer. Incorporating Iridium as a material used for a PG can be a high surface plasmon efficient material with also being reliable under high temperature irradiation during a heat-assisted writing process.

公开(公告)号：US20240112693A1

公开(公告)日：2024-04-04

申请号：US17957304

申请日：2022-09-30

Applicant: Headway Technologies, Inc.

Inventor： Koji Shimazawa ,  Shengyuan Wang ,  Yukinori Ikegawa

IPC: G11B5/31 ,  B82Y20/00 ,  G02B5/00 ,  G11B7/1387

CPC classification number: G11B5/314 ,  B82Y20/00 ,  G02B5/008 ,  G11B5/3163 ,  G11B7/1387 ,  G11B2005/0021

Abstract: The present embodiments relate to a heat-assisted magnetic recording (HAMR) write head with an iridium (Ir) film. The Ir film can include a body layer and a plasmon generator (PG) film comprising Iridium with a thin Ir seed layer. The Ir seed layer can be in direct contact with a dielectric (aluminum oxide). The thickness of the Ir film can be 40 nanometers or less including both a body layer and the seed layer. Incorporating Iridium as a material used for a PG can be a high surface plasmon efficient material with also being reliable under high temperature irradiation during a heat-assisted writing process.

公开(公告)号：US20180047423A1

公开(公告)日：2018-02-15

申请号：US15548155

申请日：2015-11-18

Applicant: SONY CORPORATION

Inventor： HIROSHI TABATA

IPC: G11B7/24038 ,  G11B7/254 ,  G11B7/0055 ,  G11B7/258 ,  G11B7/005 ,  G11B7/0045 ,  G11B7/243 ,  G11B7/257

CPC classification number: G11B7/24038 ,  C23C14/0623 ,  C23C14/3464 ,  G06F2211/007 ,  G11B7/00454 ,  G11B7/005 ,  G11B7/00557 ,  G11B7/1387 ,  G11B7/243 ,  G11B7/2433 ,  G11B7/254 ,  G11B7/257 ,  G11B7/258 ,  G11B2007/24304 ,  G11B2007/2431 ,  G11B2007/24312 ,  G11B2007/24314 ,  G11B2007/25706 ,  G11B2007/2571 ,  G11B2007/25713

Abstract: An optical recording medium includes a reflective layer, a first dielectric layer, a phase-change recording layer, and a second dielectric layer. The phase-change recording layer has an average composition represented by SbxInyMz, in which M is at least one of Mo, Ge, Mn, and Al, and x, y, and z are values in the ranges 0.70≦x≦0.92, 0.05≦y≦0.20, and 0.03≦z≦0.10, respectively, provided that x+y+z=1, the first dielectric layer includes a zirconium oxide-containing composite material or tantalum oxide, and the second dielectric layer includes a chromium oxide-containing composite material or silicon nitride.

公开(公告)号：US20170365281A1

公开(公告)日：2017-12-21

申请号：US15670207

申请日：2017-08-07

Applicant: SEAGATE TECHNOLOGY LLC

Inventor： Sarbeswar Sahoo ,  Tong Zhao ,  Michael C. Kautzky

IPC: G11B5/31 ,  G11B13/08 ,  G11B5/127 ,  G11B5/48 ,  G11B5/60 ,  G11B7/1387 ,  G11B5/00

CPC classification number: G11B5/314 ,  G11B5/1272 ,  G11B5/3163 ,  G11B5/4866 ,  G11B5/6088 ,  G11B7/1387 ,  G11B13/08 ,  G11B2005/0021

Abstract: A method including depositing a plasmonic material at a temperature of at least 150° C.; and forming at least a peg of a near field transducer (NFT) from the deposited plasmonic material.

公开(公告)号：US09799353B2

公开(公告)日：2017-10-24

申请号：US14845317

申请日：2015-09-04

Applicant: SEAGATE TECHNOLOGY LLC

Inventor： Yuhang Cheng ,  Tong Zhao ,  Michael C. Kautzky ,  Ed F. Rejda ,  Kurt W. Wierman ,  Scott Franzen ,  Andrew J. Boyne ,  Michael Allen Seigler ,  Sethuraman Jayashankar

IPC: G11B11/00 ,  G11B5/31 ,  G11B5/84 ,  B05D1/36 ,  G11B5/85 ,  G11B5/851 ,  G11B5/858 ,  G11B5/60 ,  G11B5/48 ,  G11B5/00 ,  G11B7/1387

CPC classification number: G11B5/314 ,  B05D1/36 ,  G11B5/3106 ,  G11B5/3163 ,  G11B5/4866 ,  G11B5/6088 ,  G11B5/84 ,  G11B5/85 ,  G11B5/851 ,  G11B5/858 ,  G11B7/1387 ,  G11B2005/0021

Abstract: A device that includes a near field transducer (NFT), the NFT having a disc and a peg, and the peg having an air bearing surface thereof; and at least one adhesion layer positioned on at least the air bearing surface of the peg, the adhesion layer including one or more of platinum (Pt), iridium (Ir), ruthenium (Ru), rhodium (Rh), palladium (Pd), yttrium (Y), chromium (Cr), nickel (Ni), and scandium (Sc).

公开(公告)号：US09792937B1

公开(公告)日：2017-10-17

申请号：US15205511

申请日：2016-07-08

Applicant: Seagate Technology LLC

Inventor： Aidan Dominic Goggin ,  Kelly Elizabeth Hamilton ,  Paula Frances McElhinney ,  Fadi El Hallak

IPC: G11B11/00 ,  G11B5/48 ,  G02B6/27 ,  G02B6/126 ,  G02B6/122 ,  G02B6/132 ,  G02B6/136 ,  G11B5/00 ,  G11B7/1387 ,  G11B11/105 ,  G11B5/60

CPC classification number: G11B5/4866 ,  G02B6/1228 ,  G02B6/126 ,  G02B6/132 ,  G02B6/136 ,  G02B6/2726 ,  G02B6/2766 ,  G11B5/6088 ,  G11B7/1387 ,  G11B11/10506 ,  G11B11/1051 ,  G11B2005/0021

Abstract: An apparatus includes an input coupler configured to receive light excited by a light source. A near-field transducer (NFT) is positioned at a media-facing surface of a write head. A layered waveguide is positioned between the input coupler and the NFT and configured to receive the light output from the input coupler in a transverse electric (TE) mode and deliver the light to the NFT in a transverse magnetic (TM) mode. The layered waveguide comprises a first layer extending along a light-propagation direction. The first layer is configured to receive light from the input coupler. The first layer tapers from a first cross track width to a second cross track width where the second cross track width is narrower than the first cross track width. The layered waveguide includes a second layer that is disposed on the first layer. The second layer has a cross sectional area in a plane perpendicular to the light propagation direction that increases along the light propagation direction. The cross sectional area of the second layer is smaller proximate to the input coupler and larger proximate to the NFT.

公开(公告)号：US20160125901A1

公开(公告)日：2016-05-05

申请号：US14865303

申请日：2015-09-25

Applicant: Seagate Technology LLC

Inventor： Tae-Woo Lee ,  Werner Scholz

IPC: G11B5/48

CPC classification number: G11B13/08 ,  G11B5/3133 ,  G11B5/314 ,  G11B5/4866 ,  G11B5/6088 ,  G11B7/1387 ,  G11B2005/0021

Abstract: An apparatus comprises a writer, a near-field transducer (NFT), a channel waveguide proximate the NFT, a dielectric layer between the NFT and waveguide, and a plurality of heat sinks. A first heat sink comprises a gap and contacts the NFT and the writer. A second heat sink extends across the gap of the first heat sink and between the NFT and a heat reservoir component, such as a return pole of the writer. The channel waveguide may contact the second heat sink, such as by encompassing a peripheral portion of the second heat sink. The second heat sink may have at least an outer surface comprising a plasmonic material, and may be configured to enhance plasmonic excitation of the NFT.

Abstract translation: 一种装置包括写入器，近场换能器（NFT），靠近NFT的通道波导，NFT和波导之间的介电层以及多个散热器。 第一散热器包括间隙并与NFT和作者接触。 第二散热器延伸穿过第一散热器的间隙，并且在NFT和诸如写入器的返回极的蓄热器部件之间延伸。 通道波导可以接触第二散热器，例如通过包围第二散热器的周边部分。 第二散热器可以具有包括等离子体激元材料的至少外表面，并且可以被配置为增强NFT的等离子体激发。

公开(公告)号：US09311952B2

公开(公告)日：2016-04-12

申请号：US14609580

申请日：2015-01-30

Applicant: Western Digital (Fremont), LLC

Inventor： Jiangrong Cao ,  Michael V. Morelli ,  Brad V. Johnson ,  Matthew R. Gibbons

IPC: G11B11/00 ,  G11B7/1387 ,  G11B11/105 ,  G11B5/00

CPC classification number: G11B7/1387 ,  G11B5/314 ,  G11B5/6088 ,  G11B11/10532 ,  G11B2005/0021

Abstract: An apparatus for energy assisted magnetic recording of a storage disk includes a plurality of dielectric waveguide cores configured to receive incident light energy from an energy source and direct the incident light energy to a target, and a near field transducer (NFT) formed at an air bearing surface of a magnetic recording device. The NFT is configured to focus the light energy received from the plurality of waveguide cores and to transmit the focused light energy onto the storage disk surface to generate a heating spot on the storage disk. The NFT includes a plurality of propagating surface plasmon polariton (PSPP) elements configured as plasmonic metal ridges. Each of the PSPP elements has a width approximately equivalent to the width of the heating spot and is disposed above a surface of a single waveguide core in a longitudinal alignment.

公开(公告)号：US09251830B1

公开(公告)日：2016-02-02

申请号：US14716517

申请日：2015-05-19

Applicant: Seagate Technology LLC

Inventor： John Charles Duda ,  Seung-Yeul Yang ,  Manuel Charles Anaya-Dufresne ,  Scott Franzen ,  Michael Christopher Kautzky ,  Xiaoyue Huang

IPC: G11B11/00 ,  G11B5/60 ,  G11B5/48 ,  G11B13/08 ,  G11B5/31 ,  G11B7/1387 ,  G11B5/00 ,  G11B7/1384

CPC classification number: G11B5/6088 ,  G11B5/3133 ,  G11B5/314 ,  G11B7/1384 ,  G11B7/1387 ,  G11B13/08 ,  G11B2005/0021

Abstract: An apparatus comprises a slider of a magnetic recording head having an air bearing surface (ABS), a write pole terminating at or near the ABS, and a near-field transducer (NFT) adjacent the write pole. A light delivery arrangement extends through the slider and terminates at the ABS. The light delivery arrangement is configured to communicate light through the slider and to the NFT. A transparent heat sink layer abuts a terminal end portion of the light delivery arrangement and terminates at the ABS. The heat sink layer has a thermal conductivity greater than that of the light delivery arrangement.

Abstract translation: 一种装置包括具有空气轴承表面（ABS）的磁记录头的滑块，在ABS附近或其附近终止的写极以及与写极相邻的近场换能器（NFT）。 光输送装置延伸穿过滑块并终止于ABS。 光输送装置被配置为通过滑块和NFT传送光。 透明散热层邻接光输送装置的终端部分并终止于ABS。 散热层的导热率大于光输送装置的导热率。

公开(公告)号：US09202494B1

公开(公告)日：2015-12-01

申请号：US14706686

申请日：2015-05-07

Applicant: HGST Netherlands B.V.

Inventor： Stanley Burgos ,  Matteo Staffaroni ,  Barry C. Stipe

IPC: G11B11/00 ,  G11B5/00 ,  G11B5/48 ,  G11B5/60 ,  G11B5/31 ,  G11B13/08 ,  G11B7/1387

CPC classification number: G11B5/4866 ,  G11B5/3133 ,  G11B5/314 ,  G11B5/6088 ,  G11B7/1387 ,  G11B13/08 ,  G11B2005/001 ,  G11B2005/0021

Abstract: An NFT is used in a HAMR magnetic write head. The NFT functions as a resonant circuit when in operation. The resonant circuit, which comprises the NFT, is a split-ring resonator (SRR) that has a capacitive portion and an inductive portion. The inductance and the capacitance results in a very well focused ultra-small spot-size concentrated on the magnetic media. The focus occurs at the capacitive area of the NFT with minimal to no impact upon the write pole of the HAMR magnetic head.