WO2009031630A1 - 垂直磁気記録媒体および磁気記録再生装置 - Google Patents

垂直磁気記録媒体および磁気記録再生装置 Download PDF

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Publication number
WO2009031630A1
WO2009031630A1 PCT/JP2008/066007 JP2008066007W WO2009031630A1 WO 2009031630 A1 WO2009031630 A1 WO 2009031630A1 JP 2008066007 W JP2008066007 W JP 2008066007W WO 2009031630 A1 WO2009031630 A1 WO 2009031630A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
magnetic recording
recording medium
recording layer
magnetic
Prior art date
Application number
PCT/JP2008/066007
Other languages
English (en)
French (fr)
Inventor
Atsushi Hashimoto
Original Assignee
Showa Denko K.K.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Showa Denko K.K. filed Critical Showa Denko K.K.
Priority to CN2008801053935A priority Critical patent/CN101796580B/zh
Priority to US12/676,590 priority patent/US20100209736A1/en
Publication of WO2009031630A1 publication Critical patent/WO2009031630A1/ja

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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
    • G11B5/64—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
    • G11B5/678—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 having three or more magnetic 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
    • G11B5/7369—Two or more non-magnetic underlayers, e.g. seed layers or barrier layers
    • 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
    • Y10T428/11—Magnetic recording head
    • Y10T428/1171—Magnetic recording head with defined laminate structural detail

Abstract

　本発明は、媒体設計が容易で、安価で容易にＥＣＣ型の磁気記録媒体を製造可能な製造方法、および磁気記録再生装置を提供することを目的としており、この目的を達成するために、非磁性基板上に、少なくとも軟磁性裏打ち層と下地層と中間層と垂直磁気記録層を有する垂直磁気記録媒体において、前記磁気記録層は少なくとも１層以上の主記録層と、補助記録層から構成され、前記主記録層は、垂直磁気異方性を有する層から構成され、前記補助記録層は、軟磁性層と非磁性層との交互積層により構成された３層以上の多層膜であり、前記非磁性基板に対する最外層が軟磁性層であることを特徴とする垂直磁気記録媒体を提供する。
PCT/JP2008/066007 2007-09-06 2008-09-04 垂直磁気記録媒体および磁気記録再生装置 WO2009031630A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN2008801053935A CN101796580B (zh) 2007-09-06 2008-09-04 垂直磁记录介质以及磁记录和再现装置
US12/676,590 US20100209736A1 (en) 2007-09-06 2008-09-04 Perpendicular magnetic recording medium and magnetic recording and reproducing device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007231841A JP4772015B2 (ja) 2007-09-06 2007-09-06 磁気記録媒体および磁気記録再生装置
JP2007-231841 2007-09-06

Publications (1)

Publication Number Publication Date
WO2009031630A1 true WO2009031630A1 (ja) 2009-03-12

Family

ID=40428943

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/066007 WO2009031630A1 (ja) 2007-09-06 2008-09-04 垂直磁気記録媒体および磁気記録再生装置

Country Status (4)

Country Link
US (1) US20100209736A1 (ja)
JP (1) JP4772015B2 (ja)
CN (1) CN101796580B (ja)
WO (1) WO2009031630A1 (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010064724A1 (ja) * 2008-12-05 2010-06-10 Hoya株式会社 磁気ディスク及びその製造方法
US20140002917A1 (en) * 2012-06-28 2014-01-02 Showa Denko K.K. Magnetic recording medium and magnetic storage apparatus

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5645443B2 (ja) 2009-03-31 2014-12-24 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
WO2011034499A1 (en) * 2009-09-15 2011-03-24 Agency For Science, Technology And Research An improved exchange-coupled composite medium and a magnetic recording medium comprising the same
JP2011076682A (ja) * 2009-09-30 2011-04-14 Wd Media Singapore Pte Ltd 垂直磁気記録媒体
US11676632B2 (en) * 2019-12-26 2023-06-13 Resonac Corporation Magnetic recording medium, method of manufacturing magnetic recording medium and magnetic storage device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002133635A (ja) * 2000-10-25 2002-05-10 Hitachi Maxell Ltd 情報記録媒体及び情報記録装置
JP2004079043A (ja) * 2002-08-13 2004-03-11 Fuji Electric Holdings Co Ltd 垂直磁気記録媒体
JP2005038569A (ja) * 2003-03-20 2005-02-10 Hitachi Maxell Ltd 磁気記録媒体及びその記録方法、並びに磁気記録装置
JP2008140460A (ja) * 2006-11-30 2008-06-19 Toshiba Corp 垂直磁気記録媒体及び磁気記録再生装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7038873B2 (en) * 2003-03-20 2006-05-02 Hitachi Maxell, Ltd. Magnetic recording medium having a specific relation of coercive force HC and residual magnetization MR in perpendicular direction to substrate surface
US7470474B2 (en) * 2003-04-07 2008-12-30 Kabushiki Kaisha Toshiba Magnetic recording medium, production process thereof, and magnetic recording and reproducing apparatus including both oxide and non-oxide perpendicular magnetic layers
WO2005034097A1 (ja) * 2003-09-30 2005-04-14 Fujitsu Limited 垂直磁気記録媒体，その製造方法、記録方法及び再生方法
JP2007273055A (ja) * 2006-03-31 2007-10-18 Fujitsu Ltd 垂直磁気記録媒体および磁気記憶装置
JP2007273057A (ja) * 2006-03-31 2007-10-18 Fujitsu Ltd 垂直磁気記録媒体および磁気記憶装置
US7572526B2 (en) * 2007-02-18 2009-08-11 Hitachi Global Storage Technologies Netherlands B.V. Perpendicular magnetic recording medium with exchange-spring structure having multiple exchange-spring layers and recording system for the medium

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002133635A (ja) * 2000-10-25 2002-05-10 Hitachi Maxell Ltd 情報記録媒体及び情報記録装置
JP2004079043A (ja) * 2002-08-13 2004-03-11 Fuji Electric Holdings Co Ltd 垂直磁気記録媒体
JP2005038569A (ja) * 2003-03-20 2005-02-10 Hitachi Maxell Ltd 磁気記録媒体及びその記録方法、並びに磁気記録装置
JP2008140460A (ja) * 2006-11-30 2008-06-19 Toshiba Corp 垂直磁気記録媒体及び磁気記録再生装置

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010064724A1 (ja) * 2008-12-05 2010-06-10 Hoya株式会社 磁気ディスク及びその製造方法
US8877359B2 (en) 2008-12-05 2014-11-04 Wd Media (Singapore) Pte. Ltd. Magnetic disk and method for manufacturing same
US20140002917A1 (en) * 2012-06-28 2014-01-02 Showa Denko K.K. Magnetic recording medium and magnetic storage apparatus
US8902545B2 (en) * 2012-06-28 2014-12-02 Showa Denko K.K. Magnetic recording medium and magnetic storage apparatus

Also Published As

Publication number Publication date
US20100209736A1 (en) 2010-08-19
JP4772015B2 (ja) 2011-09-14
CN101796580B (zh) 2012-11-21
CN101796580A (zh) 2010-08-04
JP2009064520A (ja) 2009-03-26

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