CN102385870A - 垂直磁记录介质和磁记录再生装置 - Google Patents
垂直磁记录介质和磁记录再生装置 Download PDFInfo
- Publication number
- CN102385870A CN102385870A CN201110244091XA CN201110244091A CN102385870A CN 102385870 A CN102385870 A CN 102385870A CN 201110244091X A CN201110244091X A CN 201110244091XA CN 201110244091 A CN201110244091 A CN 201110244091A CN 102385870 A CN102385870 A CN 102385870A
- Authority
- CN
- China
- Prior art keywords
- layer
- magnetic recording
- perpendicular magnetic
- alloy
- recording medium
- 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.)
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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
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- Magnetic Record Carriers (AREA)
Abstract
Description
Claims (5)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010189729 | 2010-08-26 | ||
JP189729/2010 | 2010-08-26 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN102385870A true CN102385870A (zh) | 2012-03-21 |
CN102385870B CN102385870B (zh) | 2015-02-25 |
Family
ID=45696968
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201110244091.XA Active CN102385870B (zh) | 2010-08-26 | 2011-08-24 | 垂直磁记录介质和磁记录再生装置 |
Country Status (4)
Country | Link |
---|---|
US (1) | US8603651B2 (zh) |
JP (1) | JP5325945B2 (zh) |
CN (1) | CN102385870B (zh) |
SG (1) | SG178686A1 (zh) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106057217A (zh) * | 2015-04-13 | 2016-10-26 | 昭和电工株式会社 | 垂直磁记录介质和磁记录再现装置 |
TWI586820B (zh) * | 2012-12-19 | 2017-06-11 | Sanyo Special Steel Co Ltd | A Cu-based magnetic recording alloy, a sputtering target material, and a perpendicular magnetic recording medium using the same |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5699017B2 (ja) * | 2011-03-30 | 2015-04-08 | 田中貴金属工業株式会社 | Pd−V合金系スパッタリングターゲット及びその製造方法 |
JP6416041B2 (ja) | 2015-05-29 | 2018-10-31 | 昭和電工株式会社 | 垂直磁気記録媒体及び磁気記録再生装置 |
US12183377B2 (en) * | 2023-05-30 | 2024-12-31 | Western Digital Technologies, Inc. | Magnetic recording media with dead magnetic layer |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070026260A1 (en) * | 2005-07-26 | 2007-02-01 | Hitachi Global Storage Technologies Netherlands B.V. | Granular recording medium for perpendicular recording and recording apparatus |
JP2007305291A (ja) * | 2006-05-11 | 2007-11-22 | Kla-Tencor Technologies Corp | 垂直磁気媒体計測の方法とシステム |
WO2009051090A1 (ja) * | 2007-10-15 | 2009-04-23 | Hoya Corporation | 垂直磁気記録媒体 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2669529B2 (ja) | 1988-04-13 | 1997-10-29 | 株式会社日立製作所 | 垂直磁気記録媒体および磁気ディスク装置 |
JPH07244831A (ja) | 1994-03-04 | 1995-09-19 | Akita Pref Gov | 磁気記録媒体の製造法 |
JP3755449B2 (ja) | 2001-10-05 | 2006-03-15 | 富士電機デバイステクノロジー株式会社 | 垂直磁気記録媒体 |
JP4470881B2 (ja) | 2005-12-27 | 2010-06-02 | 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 |
JP2007272990A (ja) | 2006-03-31 | 2007-10-18 | Fujitsu Ltd | 磁気記録媒体及びその製造方法 |
US20090147401A1 (en) * | 2006-05-08 | 2009-06-11 | Migaku Takahashi | Magnetic recording medium, method of manufacturing the same, and magnetic recording/reproducing apparatus |
US20100002326A1 (en) * | 2006-05-11 | 2010-01-07 | Ade Technologies, Inc. | Method and system for perpendicular magnetic media metrology |
HRPK20060432B3 (en) * | 2006-12-08 | 2009-11-30 | Vatavuk Anđelko | Sheet niveling device |
US8795857B2 (en) * | 2007-09-28 | 2014-08-05 | Wd Media (Singapore) Pte. Ltd. | Perpendicular magnetic recording medium and manufacturing method of the same |
JP5524464B2 (ja) * | 2008-10-06 | 2014-06-18 | ダブリュディ・メディア・シンガポール・プライベートリミテッド | 垂直磁気記録媒体 |
-
2011
- 2011-07-15 JP JP2011156625A patent/JP5325945B2/ja active Active
- 2011-08-15 SG SG2011058989A patent/SG178686A1/en unknown
- 2011-08-22 US US13/214,855 patent/US8603651B2/en active Active
- 2011-08-24 CN CN201110244091.XA patent/CN102385870B/zh active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070026260A1 (en) * | 2005-07-26 | 2007-02-01 | Hitachi Global Storage Technologies Netherlands B.V. | Granular recording medium for perpendicular recording and recording apparatus |
JP2007305291A (ja) * | 2006-05-11 | 2007-11-22 | Kla-Tencor Technologies Corp | 垂直磁気媒体計測の方法とシステム |
WO2009051090A1 (ja) * | 2007-10-15 | 2009-04-23 | Hoya Corporation | 垂直磁気記録媒体 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI586820B (zh) * | 2012-12-19 | 2017-06-11 | Sanyo Special Steel Co Ltd | A Cu-based magnetic recording alloy, a sputtering target material, and a perpendicular magnetic recording medium using the same |
CN106057217A (zh) * | 2015-04-13 | 2016-10-26 | 昭和电工株式会社 | 垂直磁记录介质和磁记录再现装置 |
Also Published As
Publication number | Publication date |
---|---|
CN102385870B (zh) | 2015-02-25 |
SG178686A1 (en) | 2012-03-29 |
US8603651B2 (en) | 2013-12-10 |
US20120050914A1 (en) | 2012-03-01 |
JP2012069230A (ja) | 2012-04-05 |
JP5325945B2 (ja) | 2013-10-23 |
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C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CP01 | Change in the name or title of a patent holder |
Address after: Tokyo, Japan Patentee after: Lishennoco Co.,Ltd. Address before: Tokyo, Japan Patentee before: Showa electrical materials Co.,Ltd. |
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CP01 | Change in the name or title of a patent holder | ||
TR01 | Transfer of patent right |
Effective date of registration: 20230519 Address after: Tokyo, Japan Patentee after: Showa electrical materials Co.,Ltd. Address before: Tokyo, Japan Patentee before: SHOWA DENKO Kabushiki Kaisha |
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TR01 | Transfer of patent right |
Effective date of registration: 20241025 Address after: Chiba County, Japan Patentee after: Lishennuoke Hard Drive Co.,Ltd. Country or region after: Japan Address before: Tokyo, Japan Patentee before: Lishennoco Co.,Ltd. Country or region before: Japan |
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