CN101111889B - 垂直磁性记录介质,该介质的制造过程以及垂直磁性记录和再现装置 - Google Patents
垂直磁性记录介质,该介质的制造过程以及垂直磁性记录和再现装置 Download PDFInfo
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- CN101111889B CN101111889B CN2006800034675A CN200680003467A CN101111889B CN 101111889 B CN101111889 B CN 101111889B CN 2006800034675 A CN2006800034675 A CN 2006800034675A CN 200680003467 A CN200680003467 A CN 200680003467A CN 101111889 B CN101111889 B CN 101111889B
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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
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/1278—Structure or manufacture of heads, e.g. inductive specially adapted for magnetisations perpendicular to the surface of the record carrier
-
- 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
-
- 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
- G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
- G11B5/8404—Processes or apparatus specially adapted for manufacturing record carriers manufacturing base layers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F10/00—Thin magnetic films, e.g. of one-domain structure
- H01F10/26—Thin magnetic films, e.g. of one-domain structure characterised by the substrate or intermediate layers
- H01F10/30—Thin magnetic films, e.g. of one-domain structure characterised by the substrate or intermediate layers characterised by the composition of the intermediate layers, e.g. seed, buffer, template, diffusion preventing, cap layers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F10/00—Thin magnetic films, e.g. of one-domain structure
- H01F10/32—Spin-exchange-coupled multilayers, e.g. nanostructured superlattices
- H01F10/324—Exchange coupling of magnetic film pairs via a very thin non-magnetic spacer, e.g. by exchange with conduction electrons of the spacer
- H01F10/3286—Spin-exchange coupled multilayers having at least one layer with perpendicular magnetic anisotropy
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Magnetic Record Carriers (AREA)
- Manufacturing Of Magnetic Record Carriers (AREA)
Abstract
Description
材料 | 薄膜厚度(nm) | 加热时间(秒) | 冷却时间(秒) | 偏磁场(Oe) | 易磁化轴方向(度) | WATE最大减少(%) | 磁道轮廓 | |
实施例1实施例6 | 91Co-5Zr-4Nb | 60 | 0 | 0 | 22 | 45 | 0 | 图3 |
实施例2实施例7 | 91Co-5Zr-4Nb | 60 | 5 | 200 | 16 | 45 | 0 | 图4 |
实施例3实施例8 | 91Co-5Zr-4Nb | 60 | 10 | 400 | 17 | 15 | - | - |
实施例4实施例9 | 91Co-5Zr-4Nb | 60 | 15 | 400 | 24 | 5 | 0 | 图5 |
实施例5实施例10 | 91Co-5Zr-4Nb | 60 | 20 | 600 | 27 | 5 | 0 | 图6 |
比较例1比较例3 | 85Co-4Zr-11Nb | 60 | 0 | 0 | 9 | 45 | 15 | 图7 |
比较例2比较例4 | 85Co-4Zr-11Nb | 60 | 20 | 600 | 6 | 5 | 18 | 图8 |
材料 | 薄膜厚度(nm) | 加热时间(秒) | 冷却时间(秒) | 偏磁场(Oe) | WATE最大减少(%) | 磁道轮廓 | |
实施例11实施例14 | 91Co-5Zr-4Nb | 60 | 5 | 200 | 22 | 0 | 图10 |
实施例12实施例15 | 91Co-5Zr-4Nb | 60 | 10 | 400 | 16 | 4 | 图11 |
实施例13实施例16 | 91Co-5Zr-4Nb | 60 | 5 | 400 | 17 | 1 | 图12 |
材料 | 薄膜厚度(nm) | 加热时间(秒) | 冷却时间(秒) | 偏磁场(Oe) | 易磁化轴方向 | WATE最大减少(%) | 磁道轮廓 | |
比较例5 | 91Co-5Zr-4Nb | 60 | 0 | 0 | 4 | 随机 | 12 | 图13 |
测试仪 | Guzik RWA2550++A |
旋转台 | S-1701B |
基底旋转速率 | 4200 |
测试半径 | 22.21mm |
高频记录(HF)过程中的频率 | 166.24NHz |
中频记录(MF)过程中的频率 | 83.12MHz |
低频记录(LF)过程中的频率 | 13.85MHz |
实施例6 | 实施例8 | 实施例9 | 比较例6 | |
易磁化轴方向(度) | 45 | 15 | 5 | 0 |
偏磁场(Oe) | 22 | 17 | 24 | 23 |
高频记录(HF)时的再现信号输出(mV) | 1.016 | 1.020 | 1.3020 | 1.117 |
中频记录(MF)时的再现信号输出(mV) | 2.978 | 2.767 | 2.878 | 2.945 |
低频记录(LF)时的再现信号输出 | 4.245 | 4.265 | 4.124 | 4.285 |
(mV) |
实施例6 | 实施例8 | 实施例9 | 比较例6 | |
隔离波半峰值宽度(PW50)(纳秒) | 6.4 | 6.5 | 6.6 | 6.6 |
覆写(OW)(dB) | 45.45 | 43.29 | 44.05 | 44.89 |
再现信号与输出噪声之比(SNR)(MF输出/MF噪声)(dB) | 27.27 | 27.6 | 27.8 | 25.5 |
材料 | 薄膜厚度(nm) | 偏磁场(Oe) | 易磁化轴方向(度) | WATE最大减少(%) | 磁道轮廓 | |
实施例17实施例18 | 91Co-5Zr-4Nb | 60 | 25 | 90 | 5 | 图14 |
基底直径(mm) | 材料 | 薄膜厚度(nm) | 偏磁场(Oe) | 易磁化轴方向(度) | WATE最大减少(%) | |
实施例19 | 22 | 91Co-5Zr-4Nb | 60 | 25 | 扇形 | 0 |
实施例20 | 22 | 91Co-5Zr-4Nb | 60 | 25 | 扇形 | 0 |
Claims (16)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP024946/2005 | 2005-02-01 | ||
JP2005024946 | 2005-02-01 | ||
PCT/JP2006/301929 WO2006082948A1 (en) | 2005-02-01 | 2006-01-31 | Perpendicular magnetic recording media, production process thereof, and perpendicular magnetic recording and reproducing apparatus |
Publications (2)
Publication Number | Publication Date |
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CN101111889A CN101111889A (zh) | 2008-01-23 |
CN101111889B true CN101111889B (zh) | 2010-05-19 |
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Application Number | Title | Priority Date | Filing Date |
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CN2006800034675A Active CN101111889B (zh) | 2005-02-01 | 2006-01-31 | 垂直磁性记录介质,该介质的制造过程以及垂直磁性记录和再现装置 |
Country Status (4)
Country | Link |
---|---|
US (1) | US7943248B2 (zh) |
JP (1) | JP4902210B2 (zh) |
CN (1) | CN101111889B (zh) |
WO (1) | WO2006082948A1 (zh) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008027505A (ja) * | 2006-07-20 | 2008-02-07 | Fuji Electric Device Technology Co Ltd | 垂直磁気記録媒体およびその製造方法 |
JP2008146693A (ja) * | 2006-12-06 | 2008-06-26 | Fuji Electric Device Technology Co Ltd | 垂直磁気記録媒体の製造方法 |
US20100062287A1 (en) * | 2008-09-10 | 2010-03-11 | Seagate Technology Llc | Method of polishing amorphous/crystalline glass to achieve a low rq & wq |
JP2010106290A (ja) * | 2008-10-28 | 2010-05-13 | Showa Denko Kk | 成膜装置および成膜方法、磁気記録媒体、磁気記録再生装置 |
US20110262776A1 (en) * | 2010-04-23 | 2011-10-27 | Shih-Chin Chen | Perpendicular magnetic recording medium with non-afc soft magnetic underlayer structure |
JP2013219150A (ja) | 2012-04-06 | 2013-10-24 | National Institute Of Advanced Industrial & Technology | 炭化珪素半導体装置のオーミック電極の製造方法 |
CN103999156B (zh) * | 2012-06-27 | 2015-09-30 | 富士电机株式会社 | 磁记录介质 |
US9341685B2 (en) * | 2013-05-13 | 2016-05-17 | HGST Netherlands B.V. | Antiferromagnetic (AFM) grain growth controlled random telegraph noise (RTN) suppressed magnetic head |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS58166531A (ja) | 1982-03-26 | 1983-10-01 | Hitachi Ltd | 垂直磁気記録媒体 |
JPS6052919A (ja) * | 1983-09-01 | 1985-03-26 | Nec Corp | 垂直磁気記録体及びその製造方法 |
JPS62212918A (ja) * | 1986-03-12 | 1987-09-18 | Hitachi Ltd | 垂直磁気記録媒体 |
JPH06103553A (ja) | 1992-09-18 | 1994-04-15 | Fujitsu Ltd | 垂直磁気記録媒体とその製造方法 |
JP3731640B2 (ja) * | 1999-11-26 | 2006-01-05 | 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憶装置 |
JP4034485B2 (ja) * | 1999-11-30 | 2008-01-16 | 株式会社東芝 | 磁気記録媒体 |
US6818330B2 (en) | 2000-08-25 | 2004-11-16 | Seagate Technology Llc | Perpendicular recording medium with antiferromagnetic exchange coupling in soft magnetic underlayers |
JP4031956B2 (ja) * | 2002-07-05 | 2008-01-09 | 株式会社日立グローバルストレージテクノロジーズ | 垂直磁気記録媒体および磁気記憶装置 |
US20040038082A1 (en) * | 2002-08-26 | 2004-02-26 | Toshihiro Tsumori | Substrate for perpendicular magnetic recording hard disk medium and method for producing the same |
JP2004118894A (ja) * | 2002-09-24 | 2004-04-15 | Victor Co Of Japan Ltd | ディスク状磁気記録媒体 |
JP2004348777A (ja) * | 2003-05-20 | 2004-12-09 | Hitachi Ltd | 垂直磁気記録媒体および磁気記録装置 |
JP2005305634A (ja) * | 2004-03-26 | 2005-11-04 | Fujitsu Ltd | ナノホール構造体及びその製造方法、スタンパ及びその製造方法、磁気記録媒体及びその製造方法、並びに、磁気記録装置及び磁気記録方法 |
JP2007026514A (ja) * | 2005-07-14 | 2007-02-01 | Hoya Corp | 垂直磁気記録媒体、及びその製造方法 |
JP2007102833A (ja) * | 2005-09-30 | 2007-04-19 | Hoya Corp | 垂直磁気記録媒体 |
-
2006
- 2006-01-30 JP JP2006021366A patent/JP4902210B2/ja active Active
- 2006-01-31 CN CN2006800034675A patent/CN101111889B/zh active Active
- 2006-01-31 WO PCT/JP2006/301929 patent/WO2006082948A1/en not_active Application Discontinuation
- 2006-01-31 US US11/795,326 patent/US7943248B2/en active Active
Non-Patent Citations (2)
Title |
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JP昭60-52919A 1985.03.26 |
JP特开2004-118894A 2004.04.15 |
Also Published As
Publication number | Publication date |
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JP2006244688A (ja) | 2006-09-14 |
US20080118781A1 (en) | 2008-05-22 |
CN101111889A (zh) | 2008-01-23 |
JP4902210B2 (ja) | 2012-03-21 |
WO2006082948A1 (en) | 2006-08-10 |
US7943248B2 (en) | 2011-05-17 |
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