SG110081A1 - Magnetic recording medium and magnetic recording/reproducing apparatus - Google Patents

Magnetic recording medium and magnetic recording/reproducing apparatus

Info

Publication number
SG110081A1
SG110081A1 SG200400880A SG200400880A SG110081A1 SG 110081 A1 SG110081 A1 SG 110081A1 SG 200400880 A SG200400880 A SG 200400880A SG 200400880 A SG200400880 A SG 200400880A SG 110081 A1 SG110081 A1 SG 110081A1
Authority
SG
Singapore
Prior art keywords
magnetic recording
reproducing apparatus
recording medium
medium
magnetic
Prior art date
Application number
SG200400880A
Other languages
English (en)
Inventor
Nakamura Futoshi
Hikosaka Takashi
Oikawa Soichi
Iwasaki Takeshi
Maeda Tomoyuki
Sakai Hiroshi
Shimizu Kenji
Sakawaki Akira
Original Assignee
Toshiba Kk
Showa Denko Kk
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 Toshiba Kk, Showa Denko Kk filed Critical Toshiba Kk
Publication of SG110081A1 publication Critical patent/SG110081A1/en

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
    • G11B5/64—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
    • G11B5/667—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent the record carriers consisting of several layers including a soft magnetic 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
    • G11B5/737—Physical structure of underlayer, e.g. texture
    • 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
    • G11B5/62—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
    • 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
    • G11B5/7377—Physical structure of underlayer, e.g. texture
    • 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
    • G11B5/7379—Seed layer, e.g. at least one non-magnetic layer is specifically adapted as a seed or seeding layer
SG200400880A 2003-02-28 2004-02-19 Magnetic recording medium and magnetic recording/reproducing apparatus SG110081A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003054837A JP3684231B2 (ja) 2003-02-28 2003-02-28 磁気記録媒体及び磁気記録再生装置

Publications (1)

Publication Number Publication Date
SG110081A1 true SG110081A1 (en) 2005-04-28

Family

ID=33119065

Family Applications (1)

Application Number Title Priority Date Filing Date
SG200400880A SG110081A1 (en) 2003-02-28 2004-02-19 Magnetic recording medium and magnetic recording/reproducing apparatus

Country Status (4)

Country Link
US (1) US7252896B2 (ja)
JP (1) JP3684231B2 (ja)
CN (1) CN1282163C (ja)
SG (1) SG110081A1 (ja)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004303375A (ja) * 2003-03-31 2004-10-28 Toshiba Corp 垂直磁気記録媒体、及び磁気記録再生装置
JP2005276367A (ja) * 2004-03-25 2005-10-06 Toshiba Corp 垂直磁気記録媒体及び磁気記録再生装置
US7498092B2 (en) * 2005-01-26 2009-03-03 Hitachi Global Storage Technologies Netherlands B.V. Perpendicular magnetic recording medium with magnetic torque layer coupled to the perpendicular recording layer
US7632580B2 (en) * 2005-06-06 2009-12-15 Hitachi Global Storage Technologies Netherlands, B.V. Perpendicular magnetic recording medium having an interlayer of a non-magnetic nickel alloy
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
SG136842A1 (en) * 2006-05-05 2007-11-29 Agency Science Tech & Res Perpendicular magnetic recording media
JP2007335034A (ja) * 2006-06-16 2007-12-27 Hoya Corp 垂直磁気記録ディスク及びその製造方法
US7862913B2 (en) * 2006-10-23 2011-01-04 Hitachi Global Storage Technologies Netherlands B.V. Oxide magnetic recording layers for perpendicular recording media
US8222087B2 (en) 2006-12-19 2012-07-17 HGST Netherlands, B.V. Seed layer for a heat spreader in a magnetic recording head
WO2008133035A1 (ja) * 2007-04-13 2008-11-06 Fuji Electric Device Technology Co., Ltd. 垂直磁気記録媒体
JP2010176782A (ja) * 2009-02-02 2010-08-12 Showa Denko Kk 磁気記録媒体の製造方法及び磁気記録再生装置
JP5638814B2 (ja) * 2009-02-23 2014-12-10 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 片面垂直磁気記録媒体
SG181632A1 (en) * 2009-12-25 2012-07-30 Jx Nippon Mining & Metals Corp Sputtering target with reduced particle generation and method of producing said target
JP5786347B2 (ja) * 2011-02-02 2015-09-30 富士電機株式会社 熱アシスト記録装置用の磁気記録媒体およびその製造方法
JP5782819B2 (ja) * 2011-05-12 2015-09-24 富士電機株式会社 垂直磁気記録媒体
JP7011477B2 (ja) * 2017-03-07 2022-01-26 昭和電工株式会社 アシスト磁気記録媒体及び磁気記憶装置

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1125439A (ja) * 1997-07-08 1999-01-29 Hitachi Ltd 垂直磁気記録媒体及びそれを用いた磁気記録再生装置
JP2000123344A (ja) * 1998-10-19 2000-04-28 Fujitsu Ltd 磁気記録媒体及びその製造方法ならびに磁気ディスク装置
US20010012573A1 (en) * 2000-01-20 2001-08-09 Fujitsu Limited Magnetic recording medium, process for fabricating magnetic recording medium and information regenerator
US20010041273A1 (en) * 2000-02-23 2001-11-15 Hiroyuki Uwazumi Magnetic recording medium and method for producing same
US6379775B1 (en) * 1996-08-30 2002-04-30 Hoya Corporation Magnetic recording medium and method of manufacturing the same
US20020114975A1 (en) * 2000-10-13 2002-08-22 Tadaaki Oikawa Magnetic recording medium and manufacturing method therefore
US20020127433A1 (en) * 2000-12-28 2002-09-12 Showa Denko K.K. Magnetic recording medium, method of producing the same and magnetic recording and reproducing device
US20020136926A1 (en) * 2000-10-20 2002-09-26 Tadaaki Oikawa Recording medium and method for manufacturing the same

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63217526A (ja) * 1987-03-05 1988-09-09 Hitachi Ltd 磁気デイスク塗膜の製造方法
JP2002163819A (ja) 2000-11-22 2002-06-07 Hitachi Maxell Ltd 情報記録媒体及びそれを用いた情報記録装置
JP2002197635A (ja) 2000-12-28 2002-07-12 Showa Denko Kk 磁気記録媒体、その製造方法および磁気記録再生装置
JP2002260207A (ja) 2000-12-28 2002-09-13 Showa Denko Kk 磁気記録媒体、その製造方法、製造装置、および磁気記録再生装置

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6379775B1 (en) * 1996-08-30 2002-04-30 Hoya Corporation Magnetic recording medium and method of manufacturing the same
JPH1125439A (ja) * 1997-07-08 1999-01-29 Hitachi Ltd 垂直磁気記録媒体及びそれを用いた磁気記録再生装置
JP2000123344A (ja) * 1998-10-19 2000-04-28 Fujitsu Ltd 磁気記録媒体及びその製造方法ならびに磁気ディスク装置
US20010012573A1 (en) * 2000-01-20 2001-08-09 Fujitsu Limited Magnetic recording medium, process for fabricating magnetic recording medium and information regenerator
US20010041273A1 (en) * 2000-02-23 2001-11-15 Hiroyuki Uwazumi Magnetic recording medium and method for producing same
US20020114975A1 (en) * 2000-10-13 2002-08-22 Tadaaki Oikawa Magnetic recording medium and manufacturing method therefore
US20020136926A1 (en) * 2000-10-20 2002-09-26 Tadaaki Oikawa Recording medium and method for manufacturing the same
US20020127433A1 (en) * 2000-12-28 2002-09-12 Showa Denko K.K. Magnetic recording medium, method of producing the same and magnetic recording and reproducing device

Also Published As

Publication number Publication date
US7252896B2 (en) 2007-08-07
CN1282163C (zh) 2006-10-25
CN1551122A (zh) 2004-12-01
JP2004265516A (ja) 2004-09-24
JP3684231B2 (ja) 2005-08-17
US20040224185A1 (en) 2004-11-11

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