CN1484219A - 垂直磁记录介质 - Google Patents
垂直磁记录介质 Download PDFInfo
- Publication number
- CN1484219A CN1484219A CNA031472664A CN03147266A CN1484219A CN 1484219 A CN1484219 A CN 1484219A CN A031472664 A CNA031472664 A CN A031472664A CN 03147266 A CN03147266 A CN 03147266A CN 1484219 A CN1484219 A CN 1484219A
- Authority
- CN
- China
- Prior art keywords
- magnetic recording
- perpendicular magnetic
- layer
- recording medium
- feature
- 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.)
- Granted
Links
- 230000005381 magnetic domain Effects 0.000 claims abstract description 20
- 239000013078 crystal Substances 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 19
- 229910045601 alloy Inorganic materials 0.000 claims description 38
- 239000000956 alloy Substances 0.000 claims description 38
- 230000005389 magnetism Effects 0.000 claims description 20
- 239000011159 matrix material Substances 0.000 claims description 15
- 229910019222 CoCrPt Inorganic materials 0.000 claims description 11
- 230000000704 physical effect Effects 0.000 claims description 11
- 229910052799 carbon Inorganic materials 0.000 claims description 9
- 229910052796 boron Inorganic materials 0.000 claims description 8
- 229910052758 niobium Inorganic materials 0.000 claims description 8
- 229910052763 palladium Inorganic materials 0.000 claims description 4
- 229910052697 platinum Inorganic materials 0.000 claims description 4
- 229910000531 Co alloy Inorganic materials 0.000 claims description 2
- 229910000684 Cobalt-chrome Inorganic materials 0.000 claims description 2
- 229910000640 Fe alloy Inorganic materials 0.000 claims description 2
- 229910005335 FePt Inorganic materials 0.000 claims description 2
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 claims description 2
- 229910052779 Neodymium Inorganic materials 0.000 claims description 2
- 229910000990 Ni alloy Inorganic materials 0.000 claims description 2
- 229910001252 Pd alloy Inorganic materials 0.000 claims description 2
- 229910001260 Pt alloy Inorganic materials 0.000 claims description 2
- 229910052804 chromium Inorganic materials 0.000 claims description 2
- 239000010952 cobalt-chrome Substances 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 229910052737 gold Inorganic materials 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 229910052750 molybdenum Inorganic materials 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 229910052709 silver Inorganic materials 0.000 claims description 2
- 229910052715 tantalum Inorganic materials 0.000 claims description 2
- 229910052719 titanium Inorganic materials 0.000 claims description 2
- 230000008878 coupling Effects 0.000 claims 3
- 238000010168 coupling process Methods 0.000 claims 3
- 238000005859 coupling reaction Methods 0.000 claims 3
- 239000006249 magnetic particle Substances 0.000 claims 3
- 239000000203 mixture Substances 0.000 claims 1
- 239000000758 substrate Substances 0.000 abstract 1
- 230000001681 protective effect Effects 0.000 description 11
- 238000000151 deposition Methods 0.000 description 10
- 230000008021 deposition Effects 0.000 description 8
- 230000001050 lubricating effect Effects 0.000 description 7
- 230000014509 gene expression Effects 0.000 description 5
- 238000010183 spectrum analysis Methods 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241000662429 Fenerbahce Species 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 238000005259 measurement Methods 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
- G11B5/66—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent the record carriers consisting of several layers
- G11B5/674—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 differing macroscopic or microscopic structures, e.g. differing crystalline lattices, varying atomic structures or differing roughnesses
-
- 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
-
- 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
- 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
- G11B5/7371—Non-magnetic single underlayer comprising nickel
-
- 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
- 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
- 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
-
- 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
- G11B2005/0026—Pulse recording
- G11B2005/0029—Pulse recording using magnetisation components of the recording layer disposed mainly perpendicularly to the record carrier surface
Landscapes
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Magnetic Record Carriers (AREA)
Abstract
Description
Claims (32)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR57394/2002 | 2002-09-19 | ||
KR57394/02 | 2002-09-19 | ||
KR1020020057394A KR100699822B1 (ko) | 2002-09-19 | 2002-09-19 | 수직자기기록 매체 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1484219A true CN1484219A (zh) | 2004-03-24 |
CN1238840C CN1238840C (zh) | 2006-01-25 |
Family
ID=36640820
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB031472664A Expired - Fee Related CN1238840C (zh) | 2002-09-19 | 2003-07-11 | 垂直磁记录介质 |
Country Status (5)
Country | Link |
---|---|
US (3) | US7060375B2 (zh) |
JP (1) | JP2004111040A (zh) |
KR (1) | KR100699822B1 (zh) |
CN (1) | CN1238840C (zh) |
SG (1) | SG105007A1 (zh) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107068168A (zh) * | 2016-01-29 | 2017-08-18 | 昭和电工株式会社 | 磁记录介质及磁记录再生装置 |
CN110111820A (zh) * | 2019-04-02 | 2019-08-09 | 惠科股份有限公司 | 磁盘盘片及其制作方法以及磁性记忆体存储器件 |
Families Citing this family (37)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20040033492A (ko) * | 2002-10-14 | 2004-04-28 | 한국과학기술원 | 균일한 국소영역의 보자력 분포와 미세한 결정립 및균일한 결정립 크기 분포를 가지는 고밀도 자기 기록 매체및 그 제조 방법 |
TWI285450B (en) * | 2003-09-26 | 2007-08-11 | Hon Hai Prec Ind Co Ltd | Magnetic recording material and method for making the same |
US8323808B2 (en) * | 2004-01-09 | 2012-12-04 | Fuji Electric Co., Ltd. | Perpendicular magnetic recording medium |
US7736765B2 (en) * | 2004-12-28 | 2010-06-15 | Seagate Technology Llc | Granular perpendicular magnetic recording media with dual recording layer and method of fabricating same |
US7687157B2 (en) * | 2005-02-04 | 2010-03-30 | Hitachi Global Storage Technologies Netherlands B.V. | Perpendicular recording media having an exchange-spring structure |
US8110298B1 (en) | 2005-03-04 | 2012-02-07 | Seagate Technology Llc | Media for high density perpendicular magnetic recording |
US8119263B2 (en) * | 2005-09-22 | 2012-02-21 | Seagate Technology Llc | Tuning exchange coupling in magnetic recording media |
US7678476B2 (en) * | 2006-01-20 | 2010-03-16 | Seagate Technology Llc | Composite heat assisted magnetic recording media with temperature tuned intergranular exchange |
US8241766B2 (en) * | 2006-01-20 | 2012-08-14 | Seagate Technology Llc | Laminated exchange coupling adhesion (LECA) media for heat assisted magnetic recording |
KR100773546B1 (ko) * | 2006-03-09 | 2007-11-07 | 삼성전자주식회사 | 자기 기록 매체 |
KR100773547B1 (ko) * | 2006-03-28 | 2007-11-07 | 삼성전자주식회사 | 자기 기록 매체 |
US20090311557A1 (en) * | 2006-03-31 | 2009-12-17 | Takahiro Onoue | Perpendicular magnetic recording disk and method of manufacturing the same |
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 |
US9978413B2 (en) | 2006-06-17 | 2018-05-22 | Dieter Suess | Multilayer exchange spring recording media |
JP2008084432A (ja) * | 2006-09-27 | 2008-04-10 | Hoya Corp | 磁気記録媒体、及び磁気記録媒体の製造方法 |
US7862913B2 (en) * | 2006-10-23 | 2011-01-04 | Hitachi Global Storage Technologies Netherlands B.V. | Oxide magnetic recording layers for perpendicular recording media |
JP5412729B2 (ja) * | 2007-04-19 | 2014-02-12 | 富士電機株式会社 | 垂直磁気記録媒体 |
KR20080105386A (ko) | 2007-05-30 | 2008-12-04 | 삼성전자주식회사 | 수직 자기 기록 매체 및 그 제조 방법 |
JP2009070540A (ja) * | 2007-09-12 | 2009-04-02 | Samsung Electronics Co Ltd | 垂直磁気記録媒体及びその製造方法 |
JP2009087501A (ja) * | 2007-10-03 | 2009-04-23 | Showa Denko Kk | 垂直磁気記録媒体および磁気記録再生装置 |
KR20090045767A (ko) * | 2007-11-02 | 2009-05-08 | 삼성전자주식회사 | 수직자기 기록매체 및 그 제조방법 |
KR101196732B1 (ko) * | 2008-02-01 | 2012-11-07 | 시게이트 테크놀로지 엘엘씨 | 수직자기 기록매체 |
JP2010009683A (ja) * | 2008-06-27 | 2010-01-14 | Showa Denko Kk | 磁気記録媒体及び磁気記録装置 |
US8697260B2 (en) | 2008-07-25 | 2014-04-15 | Seagate Technology Llc | Method and manufacture process for exchange decoupled first magnetic layer |
JP5088629B2 (ja) * | 2008-08-22 | 2012-12-05 | 昭和電工株式会社 | 磁気記録媒体および磁気記録再生装置 |
KR101683135B1 (ko) | 2009-03-13 | 2016-12-06 | 시게이트 테크놀로지 엘엘씨 | 수직자기기록매체 |
US20100247960A1 (en) * | 2009-03-31 | 2010-09-30 | Seagate Technology Llc | Patterned ecc and gradient anisotropy media through electrodeposition |
US8168309B2 (en) * | 2009-08-13 | 2012-05-01 | Hitachi Global Storage Technologies Netherlands B.V. | Perpendicular recording media with sublayers of oxide dopant magnetic materials |
JP5422399B2 (ja) * | 2010-01-05 | 2014-02-19 | 株式会社日立製作所 | パターンドメディアおよびその製造方法 |
US8404368B2 (en) * | 2010-07-30 | 2013-03-26 | Seagate Technology Llc | Multi-layer stack adjacent to granular layer |
US9142240B2 (en) | 2010-07-30 | 2015-09-22 | Seagate Technology Llc | Apparatus including a perpendicular magnetic recording layer having a convex magnetic anisotropy profile |
US8749918B2 (en) * | 2010-12-22 | 2014-06-10 | HGST Netherlands B.V. | Magnetic recording system using perpendicular exchange spring media and ring heads |
US8743666B1 (en) | 2011-03-08 | 2014-06-03 | Western Digital Technologies, Inc. | Energy assisted magnetic recording medium capable of suppressing high DC readback noise |
US8565050B1 (en) | 2011-12-20 | 2013-10-22 | WD Media, LLC | Heat assisted magnetic recording media having moment keeper layer |
US8947987B1 (en) | 2013-05-03 | 2015-02-03 | WD Media, LLC | Systems and methods for providing capping layers for heat assisted magnetic recording media |
US9177585B1 (en) | 2013-10-23 | 2015-11-03 | WD Media, LLC | Magnetic media capable of improving magnetic properties and thermal management for heat-assisted magnetic recording |
WO2019005647A1 (en) * | 2017-06-27 | 2019-01-03 | Western Digital Technologies, Inc. | INTEGRATED DISCONNECTED CIRCUITS IN DATA STORAGE DEVICES |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5273835A (en) * | 1989-09-25 | 1993-12-28 | Nikon Corporation | Over-write capable magnetooptical recording medium |
JP3093340B2 (ja) * | 1991-07-23 | 2000-10-03 | キヤノン株式会社 | 光磁気記録媒体 |
CA2127059A1 (en) * | 1993-07-02 | 1995-01-03 | Masahiko Sekiya | Magneto-optical recording medium |
US5851643A (en) * | 1993-11-11 | 1998-12-22 | Hitachi, Ltd. | Magnetic recording media and magnetic recording read-back system which uses such media |
JP3612087B2 (ja) * | 1993-12-17 | 2005-01-19 | 株式会社日立製作所 | 磁気記録媒体 |
US5581643A (en) * | 1994-12-08 | 1996-12-03 | Northern Telecom Limited | Optical waveguide cross-point switch |
JPH08180482A (ja) * | 1994-12-27 | 1996-07-12 | Canon Inc | 光磁気記録媒体及び該媒体を用いた情報再生方法 |
JP3670728B2 (ja) * | 1995-09-25 | 2005-07-13 | 株式会社日立製作所 | 磁気記録媒体およびこれを応用した磁気記録装置 |
US6403203B2 (en) * | 1997-05-29 | 2002-06-11 | Hitachi, Ltd. | Magnetic recording medium and magnetic recording apparatus using the same |
JPH11102510A (ja) * | 1997-09-30 | 1999-04-13 | Hitachi Ltd | 垂直磁気記録媒体およびこれを用いた磁気記録装置 |
JP3011918B2 (ja) * | 1998-04-06 | 2000-02-21 | 株式会社日立製作所 | 垂直磁気記録媒体及び磁気記憶装置 |
JP4233710B2 (ja) * | 1999-10-01 | 2009-03-04 | 昭和電工株式会社 | 磁気記録媒体 |
JP2001148109A (ja) * | 1999-11-19 | 2001-05-29 | Hitachi Maxell Ltd | 磁気ディスク、磁気ディスク装置 |
US6468670B1 (en) * | 2000-01-19 | 2002-10-22 | International Business Machines Corporation | Magnetic recording disk with composite perpendicular recording layer |
JP3686929B2 (ja) * | 2000-05-29 | 2005-08-24 | 株式会社日立グローバルストレージテクノロジーズ | 垂直磁気記録媒体及び磁気記録再生装置 |
JP2002358616A (ja) * | 2000-06-12 | 2002-12-13 | Toshiba Corp | 磁気記録媒体および磁気記録装置 |
JP2002025031A (ja) * | 2000-07-11 | 2002-01-25 | Fuji Electric Co Ltd | 垂直磁気記録媒体 |
JP2002092865A (ja) * | 2000-09-11 | 2002-03-29 | Hoya Corp | 垂直磁気記録媒体 |
KR100387237B1 (ko) * | 2001-01-10 | 2003-06-12 | 삼성전자주식회사 | 초고밀도기록을 위한 수직 기록용 자성 박막 |
US20020192506A1 (en) * | 2001-06-04 | 2002-12-19 | International Business Machines Corporation | `Thermal Spring' magnetic recording media for writing using magnetic and thermal gradients |
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 |
-
2002
- 2002-09-19 KR KR1020020057394A patent/KR100699822B1/ko active IP Right Grant
-
2003
- 2003-06-17 SG SG200303469A patent/SG105007A1/en unknown
- 2003-07-10 US US10/615,956 patent/US7060375B2/en not_active Expired - Fee Related
- 2003-07-11 CN CNB031472664A patent/CN1238840C/zh not_active Expired - Fee Related
- 2003-09-19 JP JP2003327098A patent/JP2004111040A/ja active Pending
-
2006
- 2006-03-01 US US11/364,172 patent/US7537845B2/en active Active
- 2006-04-17 US US11/404,758 patent/US20060188753A1/en not_active Abandoned
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107068168A (zh) * | 2016-01-29 | 2017-08-18 | 昭和电工株式会社 | 磁记录介质及磁记录再生装置 |
CN107068168B (zh) * | 2016-01-29 | 2019-05-07 | 昭和电工株式会社 | 磁记录介质及磁记录再生装置 |
CN110111820A (zh) * | 2019-04-02 | 2019-08-09 | 惠科股份有限公司 | 磁盘盘片及其制作方法以及磁性记忆体存储器件 |
Also Published As
Publication number | Publication date |
---|---|
US20040057156A1 (en) | 2004-03-25 |
KR20040025430A (ko) | 2004-03-24 |
US20060188753A1 (en) | 2006-08-24 |
SG105007A1 (en) | 2004-07-30 |
CN1238840C (zh) | 2006-01-25 |
JP2004111040A (ja) | 2004-04-08 |
US20060147759A1 (en) | 2006-07-06 |
US7537845B2 (en) | 2009-05-26 |
US7060375B2 (en) | 2006-06-13 |
KR100699822B1 (ko) | 2007-03-27 |
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