BR8701656A - Meio magnetico de gravacao aperfeicoado com camada subjacente de liga de cromo e camada magnetica a base de cobalto - Google Patents
Meio magnetico de gravacao aperfeicoado com camada subjacente de liga de cromo e camada magnetica a base de cobaltoInfo
- Publication number
- BR8701656A BR8701656A BR8701656A BR8701656A BR8701656A BR 8701656 A BR8701656 A BR 8701656A BR 8701656 A BR8701656 A BR 8701656A BR 8701656 A BR8701656 A BR 8701656A BR 8701656 A BR8701656 A BR 8701656A
- Authority
- BR
- Brazil
- Prior art keywords
- magnetic
- recording medium
- perfected
- cobalt
- magnetic recording
- Prior art date
Links
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 title abstract 3
- 239000000956 alloy Substances 0.000 title abstract 2
- 229910045601 alloy Inorganic materials 0.000 title abstract 2
- 229910017052 cobalt Inorganic materials 0.000 title 1
- 239000010941 cobalt Substances 0.000 title 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 title 1
- 239000011651 chromium Substances 0.000 abstract 3
- 229910052804 chromium Inorganic materials 0.000 abstract 2
- HBXWYZMULLEJSG-UHFFFAOYSA-N chromium vanadium Chemical compound [V][Cr][V][Cr] HBXWYZMULLEJSG-UHFFFAOYSA-N 0.000 abstract 2
- 229910018979 CoPt Inorganic materials 0.000 abstract 1
- 229910002467 CrFe Inorganic materials 0.000 abstract 1
- UPHIPHFJVNKLMR-UHFFFAOYSA-N chromium iron Chemical compound [Cr].[Fe] UPHIPHFJVNKLMR-UHFFFAOYSA-N 0.000 abstract 1
- 239000000758 substrate Substances 0.000 abstract 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
- G11B5/65—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent characterised by its composition
- G11B5/656—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent characterised by its composition containing Co
-
- 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
- G11B5/7373—Non-magnetic single underlayer comprising chromium
-
- 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
- G11B5/739—Magnetic recording media substrates
- G11B5/73911—Inorganic substrates
-
- 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
- G11B5/739—Magnetic recording media substrates
- G11B5/73911—Inorganic substrates
- G11B5/73913—Composites or coated substrates
-
- 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
- G11B5/739—Magnetic recording media substrates
- G11B5/73911—Inorganic substrates
- G11B5/73917—Metallic substrates, i.e. elemental metal or metal alloy substrates
- G11B5/73919—Aluminium or titanium elemental or alloy substrates
-
- 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
- Y10S428/922—Static electricity metal bleed-off metallic stock
- Y10S428/9265—Special properties
- Y10S428/928—Magnetic property
-
- 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.]
- Y10T428/12535—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.] with additional, spatially distinct nonmetal component
- Y10T428/12597—Noncrystalline silica or noncrystalline plural-oxide component [e.g., glass, 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.]
- Y10T428/12535—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.] with additional, spatially distinct nonmetal component
- Y10T428/12625—Free carbon containing 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.]
- Y10T428/12674—Ge- or Si-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.]
- Y10T428/12736—Al-base component
- Y10T428/12743—Next to refractory [Group IVB, VB, or VIB] 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.]
- Y10T428/12736—Al-base component
- Y10T428/1275—Next to 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
- Y10T428/12806—Refractory [Group IVB, VB, or VIB] metal-base component
- Y10T428/12826—Group VIB metal-base component
- Y10T428/12847—Cr-base component
- Y10T428/12854—Next to Co-, Fe-, or Ni-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
-
- 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
- Y10T428/12937—Co- or Ni-base component next to Fe-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
- Y10T428/12944—Ni-base component
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Metallurgy (AREA)
- Magnetic Record Carriers (AREA)
- Paints Or Removers (AREA)
- Thin Magnetic Films (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/857,020 US4652499A (en) | 1986-04-29 | 1986-04-29 | Magnetic recording medium with a chromium alloy underlayer and a cobalt-based magnetic layer |
SG151494A SG151494G (en) | 1986-04-29 | 1994-10-17 | A magnetic recording medium |
Publications (1)
Publication Number | Publication Date |
---|---|
BR8701656A true BR8701656A (pt) | 1988-01-12 |
Family
ID=26664442
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR8701656A BR8701656A (pt) | 1986-04-29 | 1987-04-08 | Meio magnetico de gravacao aperfeicoado com camada subjacente de liga de cromo e camada magnetica a base de cobalto |
Country Status (10)
Country | Link |
---|---|
US (1) | US4652499A (pt) |
EP (1) | EP0243672B1 (pt) |
JP (1) | JPS62257618A (pt) |
AT (1) | ATE71231T1 (pt) |
BR (1) | BR8701656A (pt) |
CA (1) | CA1269896A (pt) |
DE (1) | DE3775606D1 (pt) |
ES (1) | ES2028813T3 (pt) |
HK (1) | HK138994A (pt) |
SG (1) | SG151494G (pt) |
Families Citing this family (75)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07101495B2 (ja) * | 1985-07-03 | 1995-11-01 | 株式会社日立製作所 | 磁気記録媒体 |
US4789598A (en) * | 1987-01-20 | 1988-12-06 | International Business Machines Corporation | Thin film medium for horizontal magnetic recording having an improved cobalt-based alloy magnetic layer |
JP2561655B2 (ja) * | 1987-01-29 | 1996-12-11 | 株式会社日立製作所 | 面内磁気記録媒体 |
EP0302706B1 (en) * | 1987-08-06 | 1994-07-27 | Sumitomo Metal Mining Company Limited | In-plane magnetic disc |
JP2650282B2 (ja) * | 1987-12-01 | 1997-09-03 | 三菱化学株式会社 | 磁気記録媒体 |
KR970007795B1 (ko) * | 1988-02-22 | 1997-05-16 | 소니 가부시끼 가이샤 | 자기 박막 |
JPH01220217A (ja) * | 1988-02-25 | 1989-09-01 | Internatl Business Mach Corp <Ibm> | 磁気記録媒体 |
US5063120A (en) * | 1988-02-25 | 1991-11-05 | International Business Machines Corporation | Thin film magentic media |
JPH02161617A (ja) * | 1988-03-15 | 1990-06-21 | Ulvac Corp | 面内記録型磁気記録体の製造方法 |
US4929514A (en) * | 1988-03-22 | 1990-05-29 | Hewlett-Packard Company | Thin film media for high density longitudinal magnetic recording |
US5143794A (en) * | 1988-08-10 | 1992-09-01 | Hitachi, Ltd. | Magnetic recording media for longitudinal recording, process for producing the same and magnetic memory apparatus |
US4902583A (en) * | 1989-03-06 | 1990-02-20 | Brucker Charles F | Thick deposited cobalt platinum magnetic film and method of fabrication thereof |
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 |
US5066552A (en) * | 1989-08-16 | 1991-11-19 | International Business Machines Corporation | Low noise thin film metal alloy magnetic recording disk |
JPH03165315A (ja) * | 1989-11-24 | 1991-07-17 | Victor Co Of Japan Ltd | 磁気記録媒体及びその製造方法 |
US5112699A (en) * | 1990-03-12 | 1992-05-12 | International Business Machines Corporation | Metal-metal epitaxy on substrates and method of making |
JPH04123314A (ja) * | 1990-09-14 | 1992-04-23 | Hitachi Ltd | ディスク型記録媒体および記憶装置 |
JPH07118417B2 (ja) * | 1990-12-21 | 1995-12-18 | 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 |
US5149409A (en) * | 1991-01-11 | 1992-09-22 | International Business Machines Corporation | Process for fabricating thin film metal alloy magnetic recording disks to selectively variable coercivities |
US5605733A (en) * | 1992-01-22 | 1997-02-25 | Hitachi, Ltd. | Magnetic recording medium, method for its production, and system for its use |
JP2834392B2 (ja) * | 1993-06-23 | 1998-12-09 | ストアメディア インコーポレーテッド | 金属薄膜型磁気記録媒体とその製造方法 |
US6156404A (en) * | 1996-10-18 | 2000-12-05 | Komag, Inc. | Method of making high performance, low noise isotropic magnetic media including a chromium underlayer |
US5846648A (en) * | 1994-01-28 | 1998-12-08 | Komag, Inc. | Magnetic alloy having a structured nucleation layer and method for manufacturing same |
US5693426A (en) * | 1994-09-29 | 1997-12-02 | Carnegie Mellon University | Magnetic recording medium with B2 structured underlayer and a cobalt-based magnetic layer |
US5800931A (en) * | 1994-09-29 | 1998-09-01 | Carnegie Mellon University | Magnetic recording medium with a MgO sputter deposited seed layer |
US6649277B1 (en) | 1994-09-29 | 2003-11-18 | Carnegie Mellon University | Structure for and method of making magnetic recording media |
US5900324A (en) | 1994-10-27 | 1999-05-04 | Hoya Corporation | Magnetic recording media, methods for producing the same and magnetic recorders |
JPH08147665A (ja) | 1994-11-11 | 1996-06-07 | Hitachi Ltd | 磁気記録媒体及びこれを用いた磁気記憶装置 |
JPH08329442A (ja) * | 1995-05-30 | 1996-12-13 | Fuji Electric Co Ltd | 磁気記録媒体 |
US5830569A (en) * | 1995-09-12 | 1998-11-03 | Kabushiki Kaisha Toshiba | Magnetic recording medium containing CoPtO-based alloy magnetic film |
US5778302A (en) * | 1995-09-14 | 1998-07-07 | Tosoh Smd, Inc. | Methods of making Cr-Me sputter targets and targets produced thereby |
WO1997011458A1 (fr) * | 1995-09-20 | 1997-03-27 | Hitachi, Ltd. | Tete magnetoresistante |
US5968679A (en) * | 1995-11-28 | 1999-10-19 | Hoya Corporation | Magnetic recording medium and method of manufacturing the same |
US5789090A (en) * | 1996-02-05 | 1998-08-04 | Stormedia, Inc. | Metallic thin-film magnetic recording media |
TW390998B (en) | 1996-05-20 | 2000-05-21 | Hitachi Ltd | Magnetic recording media and magnetic recording system using the same |
JPH1079113A (ja) * | 1996-09-04 | 1998-03-24 | Hitachi Ltd | 面内磁気記録媒体およびこれを用いた磁気記憶装置 |
US5789056A (en) * | 1997-01-30 | 1998-08-04 | International Business Machines Corporation | Thin film magnetic disk with chromium-titanium seed layer |
JPH10233016A (ja) * | 1997-02-21 | 1998-09-02 | Hitachi Ltd | 面内磁気記録媒体およびそれを用いた磁気記憶装置 |
JP3429972B2 (ja) * | 1997-03-28 | 2003-07-28 | 株式会社日立製作所 | 磁気記録媒体およびそれを用いた磁気記憶装置 |
US5993956A (en) * | 1997-04-22 | 1999-11-30 | Carnegie Mellon University | Manganese containing layer for magnetic recording media |
US6248416B1 (en) | 1997-11-10 | 2001-06-19 | Carnegie Mellon University | Highly oriented magnetic thin films, recording media, transducers, devices made therefrom and methods of making |
US6150015A (en) | 1997-12-04 | 2000-11-21 | Komag, Incorporated | Ultra-thin nucleation layer for magnetic thin film media and the method for manufacturing the same |
JPH11328647A (ja) * | 1998-05-12 | 1999-11-30 | Hitachi Ltd | 磁気記録媒体および磁気記録媒体の製造方法 |
JP4491844B2 (ja) * | 1998-07-24 | 2010-06-30 | 東ソー株式会社 | スパッタリングターゲット |
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JP2000200410A (ja) * | 1999-01-07 | 2000-07-18 | Hitachi Ltd | 磁気記録媒体、磁気記録媒体の製造方法及び磁気記録装置 |
US6544667B1 (en) | 1999-03-11 | 2003-04-08 | Hitachi, Ltd. | Magnetic recording medium, producing method of the same and magnetic recording system |
SG102651A1 (en) * | 1999-03-31 | 2004-03-26 | Hoya Corp | Magnetic recording medium, and thermal stability measuring method and apparatus of magnetic recording medium |
US6730421B1 (en) | 1999-05-11 | 2004-05-04 | Hitachi, Maxell, Ltd. | Magnetic recording medium and its production method, and magnetic recorder |
JP3721011B2 (ja) | 1999-06-28 | 2005-11-30 | 日立マクセル株式会社 | 情報記録媒体及びそれを用いた磁気記憶装置、光磁気記憶装置 |
JP2001014649A (ja) | 1999-06-28 | 2001-01-19 | Hitachi Ltd | 板状体、無機化合物基板、磁気記録媒体及び磁気記憶装置 |
US6509111B1 (en) | 1999-09-24 | 2003-01-21 | Hitachi, Ltd. | Magnetic recording media and magnetic disk apparatus |
US6645551B2 (en) * | 1999-09-29 | 2003-11-11 | Maxtor Corporation | Magnetic recording medium underlayer and method for obtaining a desired lattice parameter therefor |
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US6432563B1 (en) | 2000-04-03 | 2002-08-13 | Carnegie Mellon University | Zinc enhanced hard disk media |
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US6428906B1 (en) | 2000-05-30 | 2002-08-06 | Maxtor Corporation | Magnetic recording media having a layered structure for perpendicular magnetization of a recording layer |
US6753100B1 (en) | 2000-05-30 | 2004-06-22 | Maxtor Corporation | Magnetic recording media having adjustable coercivity using multiple magnetic layers and method of making same |
US6423431B1 (en) | 2000-05-30 | 2002-07-23 | Maxtor Corporation | Magnetic recording media having improved magnetic and parametric performance with chromium alloy underlayer having added aluminum |
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US6596417B1 (en) | 2000-09-29 | 2003-07-22 | Carnegie Mellon University | Magnetic recording medium with a Ga3Pt5 structured underlayer and a cobalt-based magnetic layer |
US6730420B1 (en) | 2000-10-31 | 2004-05-04 | Komag, Inc. | Magnetic thin film recording media having extremely low noise and high thermal stability |
JP2002151757A (ja) * | 2000-11-09 | 2002-05-24 | Alps Electric Co Ltd | 薄膜磁気素子及びその製造方法 |
JP4391010B2 (ja) * | 2000-12-27 | 2009-12-24 | 高橋 研 | 磁気記録媒体、その製造方法および磁気記録装置 |
JP4072324B2 (ja) * | 2001-06-26 | 2008-04-09 | 株式会社日立グローバルストレージテクノロジーズ | 磁気記録媒体及びその製造方法 |
SG131748A1 (en) * | 2002-09-02 | 2007-05-28 | Inst Data Storage | Method of fabricating l10 ordered fept films with as a magnetic recording media |
US7141318B1 (en) | 2002-10-07 | 2006-11-28 | Maxtor Corporation | High density longitudinal recording media |
US6853519B2 (en) * | 2002-10-17 | 2005-02-08 | International Business Machines Corporation | Magnetic head having high conductivity lead structures seeded by epitaxially matched seed layer |
US7314675B1 (en) | 2003-01-30 | 2008-01-01 | Seagate Technology Llc | Magnetic media with high Ms magnetic layer |
US20040215110A1 (en) * | 2003-04-24 | 2004-10-28 | Syneron Medical Ltd. | Method and device for adipose tissue treatment |
JP2006085806A (ja) * | 2004-09-15 | 2006-03-30 | Hitachi Global Storage Technologies Netherlands Bv | 磁気記録媒体 |
US20080166597A1 (en) * | 2005-02-25 | 2008-07-10 | Showa Denko K.K. | Magnetic Recording Medium, Production Process Thereof, and Magnetic Recording and Reproducing Apparatus |
US20090130346A1 (en) * | 2005-08-11 | 2009-05-21 | Showa Denko K.K. | Magnetic Recording Medium, Production Process Thereof, and Magnetic Recording and Reproducing Apparatus |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3321328A (en) * | 1962-11-15 | 1967-05-23 | Ibm | Coating of aluminum substrates with a magnetic material |
US3996095A (en) * | 1975-04-16 | 1976-12-07 | International Business Machines Corporation | Epitaxial process of forming ferrite, Fe3 O4 and γFe2 O3 thin films on special materials |
JPS57149706A (en) * | 1981-03-12 | 1982-09-16 | Tdk Corp | Magnetic recording medium |
JPS57198568A (en) * | 1981-05-30 | 1982-12-06 | Yozaburo Umehara | Production for tape guide |
JPS57205821A (en) * | 1981-06-11 | 1982-12-17 | Nippon Gakki Seizo Kk | Magnetic recording tape |
US4438066A (en) * | 1981-06-30 | 1984-03-20 | International Business Machines Corporation | Zero to low magnetostriction, high coercivity, polycrystalline, Co-Pt magnetic recording media |
EP0140513A1 (en) * | 1983-08-24 | 1985-05-08 | International Business Machines Corporation | Thin film magnetic recording structures |
US4610911A (en) * | 1983-11-03 | 1986-09-09 | Hewlett-Packard Company | Thin film magnetic recording media |
-
1986
- 1986-04-29 US US06/857,020 patent/US4652499A/en not_active Expired - Lifetime
-
1987
- 1987-03-13 CA CA000532017A patent/CA1269896A/en not_active Expired
- 1987-03-20 JP JP62064488A patent/JPS62257618A/ja active Granted
- 1987-03-24 DE DE8787104311T patent/DE3775606D1/de not_active Expired - Lifetime
- 1987-03-24 AT AT87104311T patent/ATE71231T1/de not_active IP Right Cessation
- 1987-03-24 ES ES198787104311T patent/ES2028813T3/es not_active Expired - Lifetime
- 1987-03-24 EP EP87104311A patent/EP0243672B1/en not_active Expired - Lifetime
- 1987-04-08 BR BR8701656A patent/BR8701656A/pt not_active IP Right Cessation
-
1994
- 1994-10-17 SG SG151494A patent/SG151494G/en unknown
- 1994-12-08 HK HK138994A patent/HK138994A/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
US4652499A (en) | 1987-03-24 |
JPH0416848B2 (pt) | 1992-03-25 |
CA1269896A (en) | 1990-06-05 |
HK138994A (en) | 1994-12-16 |
EP0243672B1 (en) | 1992-01-02 |
EP0243672A2 (en) | 1987-11-04 |
ES2028813T3 (es) | 1992-07-16 |
EP0243672A3 (en) | 1989-08-23 |
SG151494G (en) | 1995-03-17 |
JPS62257618A (ja) | 1987-11-10 |
DE3775606D1 (de) | 1992-02-13 |
ATE71231T1 (de) | 1992-01-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
B21A | Patent or certificate of addition expired [chapter 21.1 patent gazette] |
Free format text: PATENTE EXTINTA EM 08/04/2002 |