JP2024025674A5 - - Google Patents
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- Publication number
- JP2024025674A5 JP2024025674A5 JP2023113790A JP2023113790A JP2024025674A5 JP 2024025674 A5 JP2024025674 A5 JP 2024025674A5 JP 2023113790 A JP2023113790 A JP 2023113790A JP 2023113790 A JP2023113790 A JP 2023113790A JP 2024025674 A5 JP2024025674 A5 JP 2024025674A5
- Authority
- JP
- Japan
- Prior art keywords
- layer
- magnetic recording
- underlayer
- recording medium
- heat sink
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000654 additive Substances 0.000 claims 10
- 230000000996 additive effect Effects 0.000 claims 10
- 239000000463 material Substances 0.000 claims 10
- 239000000758 substrate Substances 0.000 claims 9
- 229910052799 carbon Inorganic materials 0.000 claims 7
- 238000000034 method Methods 0.000 claims 7
- 229910052742 iron Inorganic materials 0.000 claims 6
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims 4
- 229910052593 corundum Inorganic materials 0.000 claims 4
- 229910001845 yogo sapphire Inorganic materials 0.000 claims 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims 3
- 229910052719 titanium Inorganic materials 0.000 claims 3
- 239000010936 titanium Substances 0.000 claims 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims 2
- 229910005335 FePt Inorganic materials 0.000 claims 2
- 241000849798 Nita Species 0.000 claims 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 1
- 238000013500 data storage Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US17/886,244 | 2022-08-11 | ||
| US17/886,244 US11900978B1 (en) | 2022-08-11 | 2022-08-11 | Magnetic recording medium with underlayer configured to reduce diffusion of titanium into a magnetic recording layer |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2024025674A JP2024025674A (ja) | 2024-02-26 |
| JP2024025674A5 true JP2024025674A5 (enExample) | 2024-04-22 |
| JP7514982B2 JP7514982B2 (ja) | 2024-07-11 |
Family
ID=89846562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2023113790A Active JP7514982B2 (ja) | 2022-08-11 | 2023-07-11 | 磁気記録層中へのチタンの拡散を低減するように構成された下地層を有する磁気記録媒体 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US11900978B1 (enExample) |
| JP (1) | JP7514982B2 (enExample) |
| CN (1) | CN117594073A (enExample) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12412598B2 (en) * | 2023-09-01 | 2025-09-09 | Western Digital Technologies, Inc. | Media underlayer structure for heat-assisted magnetic recording and media fabrication methods therefor |
| US12308056B2 (en) * | 2023-10-12 | 2025-05-20 | Western Digital Technologies, Inc. | Magnetic recording medium with magnesium-titanium oxide (MTO) layer formed using pulsed direct current sputter deposition |
Family Cites Families (34)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6579590B2 (en) | 2001-11-16 | 2003-06-17 | Hitachi Global Storage Technologies Netherlands B.V. | Thermally-assisted magnetic recording disk with multilayered thermal barrier |
| JP4255826B2 (ja) | 2003-12-26 | 2009-04-15 | 株式会社東芝 | 磁気記録媒体及び磁気記録媒体の製造方法並びに磁気記録再生装置 |
| US7869162B2 (en) | 2007-02-16 | 2011-01-11 | Seagate Technology Llc | Thin film structure with controlled lateral thermal spreading in the thin film |
| JP5561766B2 (ja) * | 2010-02-04 | 2014-07-30 | 昭和電工株式会社 | 熱アシスト磁気記録媒体及び磁気記憶装置 |
| US9076476B2 (en) | 2011-09-23 | 2015-07-07 | Carnegie Mellon University | Thin film media structure for perpendicular magnetic recording and storage devices made therewith |
| JP2013149315A (ja) * | 2012-01-19 | 2013-08-01 | Showa Denko Kk | 熱アシスト磁気記録媒体及び磁気記録再生装置 |
| US8941950B2 (en) * | 2012-05-23 | 2015-01-27 | WD Media, LLC | Underlayers for heat assisted magnetic recording (HAMR) media |
| US8993134B2 (en) | 2012-06-29 | 2015-03-31 | Western Digital Technologies, Inc. | Electrically conductive underlayer to grow FePt granular media with (001) texture on glass substrates |
| JP6083163B2 (ja) | 2012-09-11 | 2017-02-22 | 富士電機株式会社 | 垂直磁気記録媒体およびその製造方法 |
| JP6185591B2 (ja) | 2012-09-27 | 2017-08-23 | シーゲイト テクノロジー エルエルシーＳｅａｇａｔｅ Ｔｅｃｈｎｏｌｏｇｙ ＬＬＣ | ＴｉＮ−Ｘ中間層を含む磁気スタック |
| US9236078B2 (en) | 2012-10-10 | 2016-01-12 | Agency For Science Technology And Research | Recording medium for heat-assisted-magnetic-recording (HAMR) and method for manufacturing the same |
| JP6145332B2 (ja) | 2013-06-20 | 2017-06-07 | 昭和電工株式会社 | 磁気記録媒体、磁気記憶装置 |
| US10276192B2 (en) | 2013-07-11 | 2019-04-30 | Western Digital Technologies, Inc. | Perpendicular magnetic recording medium |
| US9672854B2 (en) | 2013-09-30 | 2017-06-06 | Seagate Technology Llc | Magnetic stack including MgO-Ti(ON) interlayer |
| US9177585B1 (en) | 2013-10-23 | 2015-11-03 | WD Media, LLC | Magnetic media capable of improving magnetic properties and thermal management for heat-assisted magnetic recording |
| US9822441B2 (en) | 2015-03-31 | 2017-11-21 | WD Media, LLC | Iridium underlayer for heat assisted magnetic recording media |
| JP6439869B2 (ja) | 2015-06-02 | 2018-12-19 | 富士電機株式会社 | 磁気記録媒体の製造方法 |
| US10347281B2 (en) * | 2015-06-02 | 2019-07-09 | Western Digital Technologies, Inc. | Structures and methods for templated growth of high areal density heat assisted magnetic recording media |
| SG10201604026QA (en) | 2015-07-16 | 2017-02-27 | Agency Science Tech & Res | Recording medium for heat assisted magnetic recording and method of forming the same |
| US10276201B1 (en) | 2015-11-02 | 2019-04-30 | WD Media, LLC | Dual phase MgO-X seed layers for heat assisted magnetic recording media |
| US9530445B1 (en) | 2016-01-21 | 2016-12-27 | HGST Netherlands B.V. | Perpendicular heat-assisted magnetic recording (HAMR) medium with a perovskite oxide intermediate layer |
| US9754618B1 (en) | 2016-04-22 | 2017-09-05 | WD Media, LLC | Heat-assisted magnetic recording (HAMR) medium including a split heat-sink structure (SHSS) |
| US20180218752A1 (en) | 2017-02-01 | 2018-08-02 | Seagate Technology Llc | Heat assisted recording media including mutli-layer granular heatsink |
| JP6832189B2 (ja) | 2017-02-21 | 2021-02-24 | 昭和電工株式会社 | 磁気記録媒体及び磁気記録再生装置 |
| US10439133B2 (en) | 2017-03-13 | 2019-10-08 | Samsung Electronics Co., Ltd. | Method and system for providing a magnetic junction having a low damping hybrid free layer |
| US20180286441A1 (en) | 2017-03-28 | 2018-10-04 | Seagate Technology Llc | Heat assisted magnetic recording (hamr) media with exchange tuning layer |
| US10650854B1 (en) * | 2017-04-17 | 2020-05-12 | Western Digital Technologies, Inc. | Heat-assisted magnetic recording (HAMR) medium with improved corrosion resistance |
| JP7246232B2 (ja) | 2019-03-29 | 2023-03-27 | Ｊｘ金属株式会社 | スパッタリングターゲット部材、スパッタリングターゲット、スパッタリングターゲット部材の製造方法、及びスパッタ膜の製造方法 |
| US11521658B2 (en) * | 2019-06-25 | 2022-12-06 | Sandisk Technologies Llc | Binary weighted voltage encoding scheme for supporting multi-bit input precision |
| US11521648B2 (en) * | 2020-11-04 | 2022-12-06 | Western Digital Technologies, Inc. | Heat-assisted magnetic recording (HAMR) medium with multilayered underlayer for the recording layer |
| US20220154093A1 (en) * | 2020-11-18 | 2022-05-19 | Western Digital Technologies, Inc. | High thermal stability lubricants |
| US20230005503A1 (en) | 2021-07-01 | 2023-01-05 | Western Digital Technologies, Inc. | Heat-assisted magnetic recording (hamr) media with magnesium trapping layer |
| US11437064B1 (en) * | 2021-08-06 | 2022-09-06 | Western Digital Technologies, Inc. | Heat-assisted magnetic recording (HAMR) medium with optical-coupling multilayer between the recording layer and heat-sink layer |
| US11763845B2 (en) | 2021-12-08 | 2023-09-19 | Seagate Technology Llc | Magnetic stack including non-magnetic seed layer for hard disk drive media |
-
2022
- 2022-08-11 US US17/886,244 patent/US11900978B1/en active Active
-
2023
- 2023-07-11 JP JP2023113790A patent/JP7514982B2/ja active Active
- 2023-07-11 CN CN202310843224.8A patent/CN117594073A/zh active Pending
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