DE60037041D1 - Magnetaufzeichnungsmedium und magnetspeichergerät - Google Patents
Magnetaufzeichnungsmedium und magnetspeichergerätInfo
- Publication number
- DE60037041D1 DE60037041D1 DE60037041T DE60037041T DE60037041D1 DE 60037041 D1 DE60037041 D1 DE 60037041D1 DE 60037041 T DE60037041 T DE 60037041T DE 60037041 T DE60037041 T DE 60037041T DE 60037041 D1 DE60037041 D1 DE 60037041D1
- Authority
- DE
- Germany
- Prior art keywords
- magnetic
- storage device
- recording medium
- magnetic recording
- magnetic storage
- 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.)
- Expired - Fee Related
Links
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
-
- 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
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B2005/0002—Special dispositions or recording techniques
-
- 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
- G11B2005/0002—Special dispositions or recording techniques
- G11B2005/0005—Arrangements, methods or circuits
-
- 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
- G11B5/012—Recording on, or reproducing or erasing from, magnetic disks
-
- 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
-
- 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
-
- 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
-
- 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12465—All metal or with adjacent metals having magnetic properties, or preformed fiber orientation coordinate with shape
-
- 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12771—Transition metal-base component
- Y10T428/12861—Group VIII or IB metal-base component
-
- 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12771—Transition metal-base component
- Y10T428/12861—Group VIII or IB metal-base component
- Y10T428/12868—Group IB metal-base component alternative to platinum group metal-base component [e.g., precious metal, etc.]
-
- 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12771—Transition metal-base component
- Y10T428/12861—Group VIII or IB metal-base component
- Y10T428/12931—Co-, Fe-, or Ni-base components, alternative to each other
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2000/008403 WO2002045080A1 (en) | 2000-11-29 | 2000-11-29 | Magnetic recording medium and magnetic storage apparatus |
Publications (2)
Publication Number | Publication Date |
---|---|
DE60037041D1 true DE60037041D1 (de) | 2007-12-20 |
DE60037041T2 DE60037041T2 (de) | 2008-08-14 |
Family
ID=11736722
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE60042988T Expired - Lifetime DE60042988D1 (de) | 2000-11-29 | 2000-11-29 | Magnetaufzeichnungsmedium und Magnetspeichergerät |
DE60037041T Expired - Fee Related DE60037041T2 (de) | 2000-11-29 | 2000-11-29 | Magnetaufzeichnungsmedium und magnetspeichergerät |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE60042988T Expired - Lifetime DE60042988D1 (de) | 2000-11-29 | 2000-11-29 | Magnetaufzeichnungsmedium und Magnetspeichergerät |
Country Status (6)
Country | Link |
---|---|
US (1) | US6893735B2 (de) |
EP (3) | EP1863016B1 (de) |
JP (1) | JP3854579B2 (de) |
KR (1) | KR100641372B1 (de) |
DE (2) | DE60042988D1 (de) |
WO (1) | WO2002045080A1 (de) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6926977B2 (en) * | 2001-10-22 | 2005-08-09 | Showa Denko Kabushiki Kaisha | Magnetic recording medium, production process thereof, and magnetic recording and reproducing apparatus |
JP2004079062A (ja) | 2002-08-15 | 2004-03-11 | Fujitsu Ltd | 磁気記録媒体 |
CN1296899C (zh) * | 2003-01-27 | 2007-01-24 | 富士通株式会社 | 磁性记录介质和磁性存储设备 |
JP2005085338A (ja) * | 2003-09-05 | 2005-03-31 | Fujitsu Ltd | 磁気記録媒体、磁気記憶装置、及び記録方法 |
US7180710B2 (en) * | 2004-05-24 | 2007-02-20 | Hitachi Global Storage Technologies Netherlands B.V. | Magnetic recording medium having three ferromagnetic layers with increasing intrinsic coercivity from the lower to the upper layer |
US7177118B2 (en) * | 2004-05-24 | 2007-02-13 | Hitachi Global Storage Technologies Netherlands B.V. | Magnetic recording system with three-layer laminated media having improved signal-to-noise ratio |
US7419730B2 (en) * | 2004-08-31 | 2008-09-02 | Hitachi Global Storage Technologies Netherlands B.V. | Magnetic recording disk with antiferromagnetically coupled master layer including copper |
JP2006085806A (ja) | 2004-09-15 | 2006-03-30 | Hitachi Global Storage Technologies Netherlands Bv | 磁気記録媒体 |
US7514161B2 (en) * | 2005-02-15 | 2009-04-07 | Hitachi Global Storage Technologies Netherlands B.V. | Laminated antiferromagnetically coupled media with decoupled magnetic layer |
JP2007273055A (ja) * | 2006-03-31 | 2007-10-18 | Fujitsu Ltd | 垂直磁気記録媒体および磁気記憶装置 |
US7691499B2 (en) * | 2006-04-21 | 2010-04-06 | Seagate Technology Llc | Corrosion-resistant granular magnetic media with improved recording performance and methods of manufacturing same |
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 |
KR20080105386A (ko) * | 2007-05-30 | 2008-12-04 | 삼성전자주식회사 | 수직 자기 기록 매체 및 그 제조 방법 |
KR20090045767A (ko) * | 2007-11-02 | 2009-05-08 | 삼성전자주식회사 | 수직자기 기록매체 및 그 제조방법 |
US9311948B2 (en) * | 2008-12-31 | 2016-04-12 | Seagate Technology Llc | Magnetic layering for bit-patterned stack |
KR101683135B1 (ko) * | 2009-03-13 | 2016-12-06 | 시게이트 테크놀로지 엘엘씨 | 수직자기기록매체 |
US9028985B2 (en) * | 2011-03-31 | 2015-05-12 | WD Media, LLC | Recording media with multiple exchange coupled magnetic layers |
US9685184B1 (en) | 2014-09-25 | 2017-06-20 | WD Media, LLC | NiFeX-based seed layer for magnetic recording media |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5051288A (en) * | 1989-03-16 | 1991-09-24 | International Business Machines Corporation | Thin film magnetic recording disk comprising alternating layers of a CoNi or CoPt alloy and a non-magnetic spacer layer |
JP2559984B2 (ja) * | 1992-08-07 | 1996-12-04 | インターナショナル・ビジネス・マシーンズ・コーポレイション | 磁気記録媒体 |
US5834111A (en) * | 1994-05-31 | 1998-11-10 | Hmt Technology Corporation | Multilayered magnetic recording medium with coercivity gradient |
US5900324A (en) * | 1994-10-27 | 1999-05-04 | Hoya Corporation | Magnetic recording media, methods for producing the same and magnetic recorders |
US5746893A (en) * | 1994-12-19 | 1998-05-05 | Hoya Corporation | Method of manufacturing magnetic recording medium |
US5583727A (en) * | 1995-05-15 | 1996-12-10 | International Business Machines Corporation | Multiple data layer magnetic recording data storage system with digital magnetoresistive read sensor |
JPH09198641A (ja) * | 1996-01-12 | 1997-07-31 | Fuji Electric Co Ltd | 磁気記録媒体 |
US6077586A (en) * | 1997-07-15 | 2000-06-20 | International Business Machines Corporation | Laminated thin film disk for longitudinal recording |
US6602612B2 (en) | 1999-06-08 | 2003-08-05 | Fujitsu Limited | Magnetic recording medium and magnetic storage apparatus |
EP1302932B1 (de) * | 1999-06-08 | 2004-10-13 | Fujitsu Limited | Magnetisches Aufzeichnungsmittel |
US6280813B1 (en) | 1999-10-08 | 2001-08-28 | International Business Machines Corporation | Magnetic recording media with antiferromagnetically coupled ferromagnetic films as the recording layer |
US6372330B1 (en) * | 1999-10-08 | 2002-04-16 | International Business Machines Corporation | Laminated magnetic recording media with antiferromagnetically coupled layers as the individual magnetic layers in the laminate |
US6383668B1 (en) * | 2000-03-27 | 2002-05-07 | International Business Machines Corporation | Magnetic recording media with antiferromagnetically coupled host layer for the magnetic recording layer |
JP4028154B2 (ja) | 2000-04-07 | 2007-12-26 | 富士通株式会社 | 磁気記録媒体及び磁気記憶装置 |
US6537684B1 (en) * | 2000-08-04 | 2003-03-25 | International Business Machines Corporation | Antiferromagnetically coupled magnetic recording media with boron-free first ferromagnetic film as nucleation layer |
US6753072B1 (en) * | 2000-09-05 | 2004-06-22 | Seagate Technology Llc | Multilayer-based magnetic media with hard ferromagnetic, anti-ferromagnetic, and soft ferromagnetic layers |
US20020064689A1 (en) * | 2000-11-27 | 2002-05-30 | Hitachi Maxell, Ltd. | Magnetic recording medium and magnetic recording apparatus |
-
2000
- 2000-11-29 JP JP2002547163A patent/JP3854579B2/ja not_active Expired - Lifetime
- 2000-11-29 EP EP07116201A patent/EP1863016B1/de not_active Expired - Lifetime
- 2000-11-29 DE DE60042988T patent/DE60042988D1/de not_active Expired - Lifetime
- 2000-11-29 EP EP07116202A patent/EP1863017A3/de not_active Withdrawn
- 2000-11-29 KR KR1020037007179A patent/KR100641372B1/ko not_active IP Right Cessation
- 2000-11-29 EP EP00977999A patent/EP1346348B1/de not_active Expired - Lifetime
- 2000-11-29 WO PCT/JP2000/008403 patent/WO2002045080A1/en active IP Right Grant
- 2000-11-29 DE DE60037041T patent/DE60037041T2/de not_active Expired - Fee Related
-
2003
- 2003-05-22 US US10/444,107 patent/US6893735B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE60037041T2 (de) | 2008-08-14 |
EP1863016A2 (de) | 2007-12-05 |
WO2002045080A1 (en) | 2002-06-06 |
EP1346348A1 (de) | 2003-09-24 |
EP1863017A3 (de) | 2008-01-23 |
EP1346348B1 (de) | 2007-11-07 |
JP3854579B2 (ja) | 2006-12-06 |
EP1863016B1 (de) | 2009-09-16 |
JP2004515028A (ja) | 2004-05-20 |
KR20030051884A (ko) | 2003-06-25 |
US6893735B2 (en) | 2005-05-17 |
DE60042988D1 (de) | 2009-10-29 |
US20040013910A1 (en) | 2004-01-22 |
EP1863017A2 (de) | 2007-12-05 |
KR100641372B1 (ko) | 2006-10-31 |
EP1863016A3 (de) | 2008-01-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: SHOWA DENKO K.K., MINATO-KU, TOKYO, JP |
|
8339 | Ceased/non-payment of the annual fee |