JP2009140562A - 垂直磁気記録媒体及び磁気記憶装置 - Google Patents
垂直磁気記録媒体及び磁気記憶装置 Download PDFInfo
- Publication number
- JP2009140562A JP2009140562A JP2007315435A JP2007315435A JP2009140562A JP 2009140562 A JP2009140562 A JP 2009140562A JP 2007315435 A JP2007315435 A JP 2007315435A JP 2007315435 A JP2007315435 A JP 2007315435A JP 2009140562 A JP2009140562 A JP 2009140562A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- magnetic recording
- layer
- recording medium
- crystal
- 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.)
- Pending
Links
- 230000005291 magnetic effect Effects 0.000 title claims abstract description 270
- 238000003860 storage Methods 0.000 title description 7
- 239000013078 crystal Substances 0.000 claims abstract description 165
- 239000000758 substrate Substances 0.000 claims description 37
- 229910045601 alloy Inorganic materials 0.000 claims description 22
- 239000000956 alloy Substances 0.000 claims description 22
- 230000005415 magnetization Effects 0.000 claims description 17
- 229910019222 CoCrPt Inorganic materials 0.000 claims description 13
- 239000010410 layer Substances 0.000 description 210
- 239000002245 particle Substances 0.000 description 78
- 239000010408 film Substances 0.000 description 53
- 239000007789 gas Substances 0.000 description 39
- 238000004544 sputter deposition Methods 0.000 description 33
- 230000015572 biosynthetic process Effects 0.000 description 18
- 238000000034 method Methods 0.000 description 14
- 230000000052 comparative effect Effects 0.000 description 11
- 230000005540 biological transmission Effects 0.000 description 10
- 239000000463 material Substances 0.000 description 10
- 229910004298 SiO 2 Inorganic materials 0.000 description 9
- 238000001755 magnetron sputter deposition Methods 0.000 description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 8
- 239000006249 magnetic particle Substances 0.000 description 8
- 229910052760 oxygen Inorganic materials 0.000 description 8
- 239000001301 oxygen Substances 0.000 description 8
- 229910052697 platinum Inorganic materials 0.000 description 8
- 229910052721 tungsten Inorganic materials 0.000 description 8
- 230000007423 decrease Effects 0.000 description 7
- 230000003993 interaction Effects 0.000 description 7
- 238000005259 measurement Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 239000011241 protective layer Substances 0.000 description 6
- 229910052719 titanium Inorganic materials 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- 238000000151 deposition Methods 0.000 description 5
- 230000008021 deposition Effects 0.000 description 5
- 230000001050 lubricating effect Effects 0.000 description 5
- 230000001681 protective effect Effects 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- 238000005477 sputtering target Methods 0.000 description 5
- 229910052726 zirconium Inorganic materials 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 4
- 238000010894 electron beam technology Methods 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 150000004767 nitrides Chemical class 0.000 description 4
- 229910052715 tantalum Inorganic materials 0.000 description 4
- 229910052796 boron Inorganic materials 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- -1 CoTaZr Inorganic materials 0.000 description 2
- 241000849798 Nita Species 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000010606 normalization Methods 0.000 description 2
- 239000005341 toughened glass Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 229910019236 CoFeB Inorganic materials 0.000 description 1
- 229910000684 Cobalt-chrome Inorganic materials 0.000 description 1
- 229910015136 FeMn Inorganic materials 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 229910010038 TiAl Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910002064 alloy oxide Inorganic materials 0.000 description 1
- 239000002885 antiferromagnetic material Substances 0.000 description 1
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- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 1
- 239000010952 cobalt-chrome Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
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- 238000007598 dipping method Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 150000002222 fluorine compounds Chemical class 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000010191 image analysis Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000010884 ion-beam technique Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 230000005381 magnetic domain Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 229910001120 nichrome Inorganic materials 0.000 description 1
- 125000005010 perfluoroalkyl group Chemical group 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 238000010301 surface-oxidation reaction Methods 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/64—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent
- G11B5/65—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent characterised by its composition
- G11B5/657—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent characterised by its composition containing inorganic, non-oxide compound of Si, N, P, B, H or C, e.g. in metal alloy or compound
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
- G11B5/7368—Non-polymeric layer under the lowermost magnetic recording layer
- G11B5/7369—Two or more non-magnetic underlayers, e.g. seed layers or barrier layers
- G11B5/737—Physical structure of underlayer, e.g. texture
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/74—Record carriers characterised by the form, e.g. sheet shaped to wrap around a drum
- G11B5/82—Disk carriers
Landscapes
- Engineering & Computer Science (AREA)
- Metallurgy (AREA)
- Magnetic Record Carriers (AREA)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007315435A JP2009140562A (ja) | 2007-12-06 | 2007-12-06 | 垂直磁気記録媒体及び磁気記憶装置 |
| US12/313,292 US20090147403A1 (en) | 2007-12-06 | 2008-11-18 | Perpendicular magnetic recording medium and magnetic recording system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007315435A JP2009140562A (ja) | 2007-12-06 | 2007-12-06 | 垂直磁気記録媒体及び磁気記憶装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2009140562A true JP2009140562A (ja) | 2009-06-25 |
| JP2009140562A5 JP2009140562A5 (enExample) | 2010-12-16 |
Family
ID=40721390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2007315435A Pending JP2009140562A (ja) | 2007-12-06 | 2007-12-06 | 垂直磁気記録媒体及び磁気記憶装置 |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US20090147403A1 (enExample) |
| JP (1) | JP2009140562A (enExample) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011248968A (ja) * | 2010-05-28 | 2011-12-08 | Wd Media (Singapore) Pte. Ltd | 垂直磁気ディスク |
| JP2012160242A (ja) * | 2011-02-02 | 2012-08-23 | Fuji Electric Co Ltd | 熱アシスト記録装置用の磁気記録媒体およびその製造方法 |
| US8703307B2 (en) | 2010-10-12 | 2014-04-22 | HGST Netherlands B.V. | Perpendicular magnetic recording medium and magnetic storage apparatus using the same |
| US9990940B1 (en) | 2014-12-30 | 2018-06-05 | WD Media, LLC | Seed structure for perpendicular magnetic recording media |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8518563B2 (en) | 2010-02-23 | 2013-08-27 | Seagate Technology Llc | Covalently bound monolayer for a protective carbon overcoat |
| US10276192B2 (en) * | 2013-07-11 | 2019-04-30 | Western Digital Technologies, Inc. | Perpendicular magnetic recording medium |
| US10304482B2 (en) | 2015-03-22 | 2019-05-28 | Seagate Technology Llc | Devices including an overcoat layer |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002358615A (ja) * | 2001-02-28 | 2002-12-13 | Showa Denko Kk | 磁気記録媒体、その製造方法、および磁気記録再生装置 |
| JP2003168206A (ja) * | 2001-11-29 | 2003-06-13 | Hitachi Ltd | 磁気記録媒体及びその製造方法ならびにこれを用いた磁気記憶装置 |
| JP2005190552A (ja) * | 2003-12-25 | 2005-07-14 | Hitachi Global Storage Technologies Netherlands Bv | 磁気記録媒体 |
| JP2006331582A (ja) * | 2005-05-27 | 2006-12-07 | Toshiba Corp | 垂直磁気記録媒体及び垂直磁気記録再生装置 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6699600B2 (en) * | 2001-02-28 | 2004-03-02 | Showa Denko K.K. | Magnetic recording medium, method of manufacture therefor, and apparatus for magnetic recording and reproducing recordings |
| JP2005190517A (ja) * | 2003-12-24 | 2005-07-14 | Hitachi Global Storage Technologies Netherlands Bv | 垂直磁気記録媒体及び磁気記憶装置 |
| JP4214522B2 (ja) * | 2004-01-28 | 2009-01-28 | 富士電機デバイステクノロジー株式会社 | 垂直磁気記録媒体、および、その製造方法 |
-
2007
- 2007-12-06 JP JP2007315435A patent/JP2009140562A/ja active Pending
-
2008
- 2008-11-18 US US12/313,292 patent/US20090147403A1/en not_active Abandoned
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002358615A (ja) * | 2001-02-28 | 2002-12-13 | Showa Denko Kk | 磁気記録媒体、その製造方法、および磁気記録再生装置 |
| JP2003168206A (ja) * | 2001-11-29 | 2003-06-13 | Hitachi Ltd | 磁気記録媒体及びその製造方法ならびにこれを用いた磁気記憶装置 |
| JP2005190552A (ja) * | 2003-12-25 | 2005-07-14 | Hitachi Global Storage Technologies Netherlands Bv | 磁気記録媒体 |
| JP2006331582A (ja) * | 2005-05-27 | 2006-12-07 | Toshiba Corp | 垂直磁気記録媒体及び垂直磁気記録再生装置 |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011248968A (ja) * | 2010-05-28 | 2011-12-08 | Wd Media (Singapore) Pte. Ltd | 垂直磁気ディスク |
| US8951651B2 (en) | 2010-05-28 | 2015-02-10 | Wd Media (Singapore) Pte. Ltd. | Perpendicular magnetic recording disk |
| US8703307B2 (en) | 2010-10-12 | 2014-04-22 | HGST Netherlands B.V. | Perpendicular magnetic recording medium and magnetic storage apparatus using the same |
| JP2012160242A (ja) * | 2011-02-02 | 2012-08-23 | Fuji Electric Co Ltd | 熱アシスト記録装置用の磁気記録媒体およびその製造方法 |
| US9990940B1 (en) | 2014-12-30 | 2018-06-05 | WD Media, LLC | Seed structure for perpendicular magnetic recording media |
Also Published As
| Publication number | Publication date |
|---|---|
| US20090147403A1 (en) | 2009-06-11 |
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