TW200531037A - Magnetic recording disk with antiferromagnetically-coupled magnetic layer having multiple lower layers - Google Patents
Magnetic recording disk with antiferromagnetically-coupled magnetic layer having multiple lower layers Download PDFInfo
- Publication number
- TW200531037A TW200531037A TW093138646A TW93138646A TW200531037A TW 200531037 A TW200531037 A TW 200531037A TW 093138646 A TW093138646 A TW 093138646A TW 93138646 A TW93138646 A TW 93138646A TW 200531037 A TW200531037 A TW 200531037A
- Authority
- TW
- Taiwan
- Prior art keywords
- layer
- ferromagnetic layer
- mrt
- antiferromagnetic coupling
- bottom ferromagnetic
- Prior art date
Links
- 230000005291 magnetic effect Effects 0.000 title claims abstract description 59
- 230000005294 ferromagnetic effect Effects 0.000 claims abstract description 93
- 238000010168 coupling process Methods 0.000 claims abstract description 42
- 238000005859 coupling reaction Methods 0.000 claims abstract description 42
- 239000010410 layer Substances 0.000 claims description 235
- 230000008878 coupling Effects 0.000 claims description 41
- 230000005290 antiferromagnetic effect Effects 0.000 claims description 32
- 239000000956 alloy Substances 0.000 claims description 21
- 229910045601 alloy Inorganic materials 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 20
- 239000000758 substrate Substances 0.000 claims description 15
- 239000011651 chromium Substances 0.000 claims description 14
- 230000005415 magnetization Effects 0.000 claims description 13
- 229910052804 chromium Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 5
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 claims description 4
- 229910052707 ruthenium Inorganic materials 0.000 claims description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052796 boron Inorganic materials 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 229910000599 Cr alloy Inorganic materials 0.000 claims description 2
- 230000005303 antiferromagnetism Effects 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 229910052732 germanium Inorganic materials 0.000 claims description 2
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 claims description 2
- 229910052741 iridium Inorganic materials 0.000 claims description 2
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 claims description 2
- 230000001681 protective effect Effects 0.000 claims description 2
- 239000011241 protective layer Substances 0.000 claims description 2
- 229910000531 Co alloy Inorganic materials 0.000 claims 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 claims 1
- 229910052697 platinum Inorganic materials 0.000 claims 1
- 229910052709 silver Inorganic materials 0.000 claims 1
- 239000004332 silver Substances 0.000 claims 1
- 239000010959 steel Substances 0.000 claims 1
- 239000002131 composite material Substances 0.000 abstract description 20
- 230000009467 reduction Effects 0.000 abstract description 11
- 125000006850 spacer group Chemical group 0.000 description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 230000007423 decrease Effects 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 230000006870 function Effects 0.000 description 5
- 239000006249 magnetic particle Substances 0.000 description 4
- 229910000684 Cobalt-chrome Inorganic materials 0.000 description 3
- 239000010952 cobalt-chrome Substances 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 230000010355 oscillation Effects 0.000 description 3
- -1 CrV Chemical compound 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003302 ferromagnetic material Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- YTPMCWYIRHLEGM-BQYQJAHWSA-N 1-[(e)-2-propylsulfonylethenyl]sulfonylpropane Chemical compound CCCS(=O)(=O)\C=C\S(=O)(=O)CCC YTPMCWYIRHLEGM-BQYQJAHWSA-N 0.000 description 1
- 229910001149 41xx steel Inorganic materials 0.000 description 1
- 229910017061 Fe Co Inorganic materials 0.000 description 1
- 229910017709 Ni Co Inorganic materials 0.000 description 1
- 229910003267 Ni-Co Inorganic materials 0.000 description 1
- 229910003271 Ni-Fe Inorganic materials 0.000 description 1
- 229910003262 Ni‐Co Inorganic materials 0.000 description 1
- 240000005809 Prunus persica Species 0.000 description 1
- 235000006040 Prunus persica var persica Nutrition 0.000 description 1
- 229910052770 Uranium Inorganic materials 0.000 description 1
- 229910003481 amorphous carbon Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000000788 chromium alloy Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 102000045222 parkin Human genes 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000007725 thermal activation Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 description 1
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
- G11B5/66—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent the record carriers consisting of several layers
- G11B5/676—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent the record carriers consisting of several layers having magnetic layers separated by a nonmagnetic layer, e.g. antiferromagnetic layer, Cu layer or coupling layer
- G11B5/678—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent the record carriers consisting of several layers having magnetic layers separated by a nonmagnetic layer, e.g. antiferromagnetic layer, Cu layer or coupling layer having three or more magnetic layers
-
- 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
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/31—Structure or manufacture of heads, e.g. inductive using thin films
-
- 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
-
- 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
- G11B5/66—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent the record carriers consisting of several layers
- G11B5/672—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent the record carriers consisting of several layers having different compositions in a plurality of magnetic layers, e.g. layer compositions having differing elemental components or differing proportions of elements
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
- G11B2220/2508—Magnetic discs
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/90—Magnetic feature
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Magnetic Record Carriers (AREA)
- Thin Magnetic Films (AREA)
- Hall/Mr Elements (AREA)
- Magnetic Heads (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/788,687 US7125616B2 (en) | 2004-02-26 | 2004-02-26 | Magnetic recording disk with antiferromagnetically-coupled magnetic layer having multiple lower layers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| TW200531037A true TW200531037A (en) | 2005-09-16 |
Family
ID=34750535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW093138646A TW200531037A (en) | 2004-02-26 | 2004-12-13 | Magnetic recording disk with antiferromagnetically-coupled magnetic layer having multiple lower layers |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US7125616B2 (enExample) |
| EP (1) | EP1569207B1 (enExample) |
| JP (1) | JP2005243220A (enExample) |
| KR (1) | KR20060043112A (enExample) |
| CN (1) | CN100338656C (enExample) |
| DE (1) | DE602004015563D1 (enExample) |
| SG (1) | SG114744A1 (enExample) |
| TW (1) | TW200531037A (enExample) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7081309B2 (en) * | 2004-03-23 | 2006-07-25 | Hitachi Global Storage Technologies Netherlands B.V. | Magnetic recording disk with antiferromagnetically-coupled magnetic layer having multiple ferromagnetically-coupled lower layers |
| US20060210834A1 (en) * | 2005-03-18 | 2006-09-21 | Do Hoa V | Laminated magnetic thin films with sublayers for magnetic recording |
| JP2007004907A (ja) * | 2005-06-24 | 2007-01-11 | Hitachi Global Storage Technologies Netherlands Bv | 磁気記録媒体 |
| JP2007257679A (ja) * | 2006-03-20 | 2007-10-04 | Fujitsu Ltd | 磁気記録媒体、その製造方法、および磁気記憶装置 |
| JP2007317304A (ja) * | 2006-05-25 | 2007-12-06 | Fujitsu Ltd | 磁気記録媒体および磁気記憶装置 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE60014974T2 (de) | 1999-06-08 | 2005-03-17 | Fujitsu Ltd., Kawasaki | Magnetisches Aufzeichnungsmittel |
| US6602612B2 (en) * | 1999-06-08 | 2003-08-05 | Fujitsu Limited | Magnetic recording medium and magnetic storage apparatus |
| US6773834B2 (en) | 1999-10-08 | 2004-08-10 | Hitachi Global Storage Technologies Netherlands B.V. | Laminated magnetic recording media with antiferromagnetically coupled layer as one of the individual magnetic layers in the laminate |
| US6280813B1 (en) * | 1999-10-08 | 2001-08-28 | International Business Machines Corporation | Magnetic recording media with antiferromagnetically coupled ferromagnetic films as the recording layer |
| US6835475B2 (en) * | 2001-07-26 | 2004-12-28 | Hitachi Global Storage Technologies Netherlands B.V. | Dual-layer perpendicular magnetic recording media with laminated underlayer formed with antiferromagnetically coupled films |
| SG96659A1 (en) * | 2001-11-08 | 2003-06-16 | Inst Data Storage | Laminated antiferromagnetically coupled media for data storage |
| JP2003263714A (ja) | 2002-03-06 | 2003-09-19 | Fujitsu Ltd | 磁気記録媒体及び磁気記憶装置 |
| US6893748B2 (en) * | 2003-05-20 | 2005-05-17 | Komag, Inc. | Soft magnetic film for perpendicular recording disk |
-
2004
- 2004-02-26 US US10/788,687 patent/US7125616B2/en not_active Expired - Fee Related
- 2004-10-12 EP EP04256293A patent/EP1569207B1/en not_active Expired - Lifetime
- 2004-10-12 DE DE602004015563T patent/DE602004015563D1/de not_active Expired - Fee Related
- 2004-12-13 TW TW093138646A patent/TW200531037A/zh unknown
-
2005
- 2005-01-26 JP JP2005017820A patent/JP2005243220A/ja not_active Withdrawn
- 2005-02-01 CN CNB2005100064428A patent/CN100338656C/zh not_active Expired - Fee Related
- 2005-02-22 SG SG200501003A patent/SG114744A1/en unknown
- 2005-02-23 KR KR1020050014836A patent/KR20060043112A/ko not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| CN1661686A (zh) | 2005-08-31 |
| KR20060043112A (ko) | 2006-05-15 |
| SG114744A1 (en) | 2005-09-28 |
| DE602004015563D1 (de) | 2008-09-18 |
| US7125616B2 (en) | 2006-10-24 |
| US20050190498A1 (en) | 2005-09-01 |
| CN100338656C (zh) | 2007-09-19 |
| EP1569207A1 (en) | 2005-08-31 |
| EP1569207B1 (en) | 2008-08-06 |
| JP2005243220A (ja) | 2005-09-08 |
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