DE69709575D1 - Magnetischer Aufzeichnungsträger und diesen Träger verwendendes magnetisches Aufzeichnungssystem - Google Patents
Magnetischer Aufzeichnungsträger und diesen Träger verwendendes magnetisches AufzeichnungssystemInfo
- Publication number
- DE69709575D1 DE69709575D1 DE69709575T DE69709575T DE69709575D1 DE 69709575 D1 DE69709575 D1 DE 69709575D1 DE 69709575 T DE69709575 T DE 69709575T DE 69709575 T DE69709575 T DE 69709575T DE 69709575 D1 DE69709575 D1 DE 69709575D1
- Authority
- DE
- Germany
- Prior art keywords
- magnetic recording
- medium
- recording system
- recording medium
- magnetic
- 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 - Lifetime
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
- G11B5/73—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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y10/00—Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y25/00—Nanomagnetism, e.g. magnetoimpedance, anisotropic magnetoresistance, giant magnetoresistance or tunneling magnetoresistance
-
- 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
- G11B5/012—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
- G11B5/62—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
-
- 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
-
- 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
- G11B2005/0002—Special dispositions or recording techniques
- G11B2005/0005—Arrangements, methods or circuits
- G11B2005/001—Controlling recording characteristics of record carriers or transducing characteristics of transducers by means not being part of their structure
- G11B2005/0013—Controlling recording characteristics of record carriers or transducing characteristics of transducers by means not being part of their structure of transducers, e.g. linearisation, equalisation
- G11B2005/0016—Controlling recording characteristics of record carriers or transducing characteristics of transducers by means not being part of their structure of transducers, e.g. linearisation, equalisation of magnetoresistive transducers
-
- 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
- G11B5/33—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only
- G11B5/39—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects
- G11B2005/3996—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects large or giant magnetoresistive effects [GMR], e.g. as generated in spin-valve [SV] devices
-
- 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
- G11B5/33—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only
- G11B5/39—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects
-
- 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)
- Chemical & Material Sciences (AREA)
- Nanotechnology (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Theoretical Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Magnetic Record Carriers (AREA)
- Thin Magnetic Films (AREA)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12433496 | 1996-05-20 | ||
JP12433496 | 1996-05-20 | ||
PCT/JP1996/002198 WO1998006093A1 (fr) | 1996-05-20 | 1996-08-05 | Support d'enregistrement magnetique et dispositif de memoire magnetique utilisant un tel support |
WOPCT/JP96/02198 | 1996-08-05 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69709575D1 true DE69709575D1 (de) | 2002-02-21 |
DE69709575T2 DE69709575T2 (de) | 2009-09-24 |
Family
ID=26437228
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69709575T Expired - Lifetime DE69709575T2 (de) | 1996-05-20 | 1997-05-16 | Magnetischer Aufzeichnungsträger und diesen Träger verwendendes magnetisches Aufzeichnungssystem |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0809238B1 (de) |
KR (1) | KR970076523A (de) |
DE (1) | DE69709575T2 (de) |
WO (1) | WO1998006093A1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6411476B1 (en) * | 1999-10-28 | 2002-06-25 | International Business Machines Corporation | Trilayer seed layer structure for spin valve sensor |
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 |
WO2004036556A1 (ja) * | 2002-10-17 | 2004-04-29 | Fujitsu Limited | 垂直磁気記録媒体 |
WO2004068390A2 (en) * | 2003-01-31 | 2004-08-12 | Showa Denko K.K. | Magnetic recording medium, production process thereof, and magnetic recording and reproducing apparatus |
US20060110626A1 (en) * | 2004-11-24 | 2006-05-25 | Heraeus, Inc. | Carbon containing sputter target alloy compositions |
JP6060484B2 (ja) * | 2012-01-19 | 2017-01-18 | 富士電機株式会社 | 磁気記録媒体の製造方法 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61267927A (ja) * | 1985-05-22 | 1986-11-27 | Olympus Optical Co Ltd | 垂直磁気記録媒体 |
JPH07101495B2 (ja) * | 1985-07-03 | 1995-11-01 | 株式会社日立製作所 | 磁気記録媒体 |
CA2020263A1 (en) * | 1989-07-03 | 1991-01-04 | Yoichi Uchiyama | Magnetic recording medium and method of manufacture therefor |
DE3921856A1 (de) * | 1989-07-04 | 1991-01-17 | Siemens Ag | Plattenfoermiges aufzeichnungsmedium mit einer magnetisch anisotropen speicherschicht auf einer duennen zwischenschicht |
JP2833190B2 (ja) * | 1990-10-15 | 1998-12-09 | 日本板硝子株式会社 | 磁気記録媒体 |
JPH05197942A (ja) * | 1992-01-22 | 1993-08-06 | Hitachi Ltd | 磁気記録媒体および磁気記録装置 |
JPH06103538A (ja) * | 1992-09-17 | 1994-04-15 | Hitachi Ltd | 磁気抵抗効果型磁気ヘッド及びその製造方法 |
JPH08124123A (ja) * | 1994-10-25 | 1996-05-17 | Hitachi Ltd | 磁気抵抗効果型再生ヘッドおよび磁気記録再生装置 |
-
1996
- 1996-08-05 WO PCT/JP1996/002198 patent/WO1998006093A1/ja active Application Filing
-
1997
- 1997-05-16 EP EP97108035A patent/EP0809238B1/de not_active Expired - Lifetime
- 1997-05-16 DE DE69709575T patent/DE69709575T2/de not_active Expired - Lifetime
- 1997-05-19 KR KR1019970019273A patent/KR970076523A/ko not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
EP0809238A3 (de) | 1998-07-08 |
KR970076523A (ko) | 1997-12-12 |
EP0809238B1 (de) | 2002-01-16 |
WO1998006093A1 (fr) | 1998-02-12 |
DE69709575T2 (de) | 2009-09-24 |
EP0809238A2 (de) | 1997-11-26 |
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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: HITACHI GLOBAL STORAGE TECHNOLOGIES JAPAN,LTD., OD |