WO2008143296A1 - 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
WO2008143296A1
WO2008143296A1 PCT/JP2008/059374 JP2008059374W WO2008143296A1 WO 2008143296 A1 WO2008143296 A1 WO 2008143296A1 JP 2008059374 W JP2008059374 W JP 2008059374W WO 2008143296 A1 WO2008143296 A1 WO 2008143296A1
Authority
WO
WIPO (PCT)
Prior art keywords
magnetic
layer
magnetic recording
recording
vertical
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.)
Ceased
Application number
PCT/JP2008/059374
Other languages
English (en)
French (fr)
Inventor
Migaku Takahashi
Shin Saito
Tomoyuki Maeda
Akihiko Takeo
Yuzo Sasaki
Ryuji Sakaguchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tohoku University NUC
Toshiba Corp
Resonac Holdings Corp
Original Assignee
Tohoku University NUC
Showa Denko KK
Toshiba Corp
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 Tohoku University NUC, Showa Denko KK, Toshiba Corp filed Critical Tohoku University NUC
Priority to US12/601,372 priority Critical patent/US20100165510A1/en
Publication of WO2008143296A1 publication Critical patent/WO2008143296A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • G11B5/676—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
    • G11B5/62—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
    • G11B5/64—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
    • G11B5/7379—Seed layer, e.g. at least one non-magnetic layer is specifically adapted as a seed or seeding layer

Landscapes

  • Magnetic Record Carriers (AREA)
  • Thin Magnetic Films (AREA)

Abstract

　非磁性基板上に、少なくとも軟磁性下地層と垂直磁気記録層と保護層を有する垂直磁気記録媒体において、垂直磁気記録層を、主記録層と非磁性中間層と補助層から構成し、主記録層を、磁性結晶粒子とそれを取り囲む粒界領域を有し、かつ垂直磁気異方性を有する材料から構成し、補助層を、負の結晶磁気異方性を有する材料から構成し、非磁性中間層を、主記録層と補助層の間に形成し、Ｒｕ，Ｒｈ，Ｉｒから選択される少なくとも一種の金属または合金から構成する。この磁気記録媒体は、良好な熱安定性と良好な記録・再生特性を有し、高密度記録が可能である。
PCT/JP2008/059374 2007-05-21 2008-05-21 垂直磁気記録媒体および磁気記録再生装置 Ceased WO2008143296A1 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US12/601,372 US20100165510A1 (en) 2007-05-21 2008-05-21 Vertical magnetic recording medium and magnetic recording reproducing apparatus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-133679 2007-05-21
JP2007133679A JP2008287829A (ja) 2007-05-21 2007-05-21 垂直磁気記録媒体

Publications (1)

Publication Number Publication Date
WO2008143296A1 true WO2008143296A1 (ja) 2008-11-27

Family

ID=40031990

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/059374 Ceased WO2008143296A1 (ja) 2007-05-21 2008-05-21 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) US20100165510A1 (ja)
JP (1) JP2008287829A (ja)
TW (1) TW200921653A (ja)
WO (1) WO2008143296A1 (ja)

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Publication number Priority date Publication date Assignee Title
US8877359B2 (en) 2008-12-05 2014-11-04 Wd Media (Singapore) Pte. Ltd. Magnetic disk and method for manufacturing same
JP5515044B2 (ja) * 2010-01-07 2014-06-11 学校法人 工学院大学 磁気記録装置
US8455118B2 (en) * 2010-08-31 2013-06-04 Seagate Technology Llc Composite soft underlayer including negative anisotropy material
JP5677789B2 (ja) * 2010-09-08 2015-02-25 昭和電工株式会社 磁気記録媒体及び磁気記録再生装置
MY164370A (en) * 2010-12-20 2017-12-15 Jx Nippon Mining & Metals Corp Fe-pt-based sputtering target with dispersed c grains
US8470463B2 (en) * 2011-04-22 2013-06-25 Seagate Technology Llc Magnetic shield with in-plane anisotropy
JP5112533B2 (ja) * 2011-04-26 2013-01-09 株式会社東芝 垂直磁気記録媒体、その製造方法、及び磁気記録再生装置
US8675315B2 (en) 2011-07-29 2014-03-18 Seagate Technology Llc Magnetic sensor with anisotropic liner
KR101367952B1 (ko) * 2012-05-30 2014-02-28 삼성전기주식회사 적층형 전자부품용 비자성체 조성물, 이를 이용한 적층형 전자부품 및 이의 제조방법
US8896971B2 (en) 2012-08-21 2014-11-25 Seagate Technology Llc Aligned magnetic insulating feature
CN105144779B (zh) 2013-03-07 2018-09-28 株式会社东芝 无线通信方法和装置
JP6073194B2 (ja) * 2013-07-03 2017-02-01 昭和電工株式会社 磁気記録媒体、磁気記憶装置
US20150085401A1 (en) * 2013-09-26 2015-03-26 HGST Netherlands B.V. Recording medium having recording assist
US9689065B2 (en) * 2014-01-03 2017-06-27 Seagate Technology Llc Magnetic stack including crystallized segregant induced columnar magnetic recording layer
JP6072172B1 (ja) * 2015-08-27 2017-02-01 株式会社東芝 磁気記録媒体及び磁気記録再生装置
US9934797B2 (en) * 2016-04-26 2018-04-03 Tdk Corporation Multilayer element including base multilayer body, magnetic sensor and microwave assisted magnetic head
JP6767251B2 (ja) 2016-12-08 2020-10-14 昭和電工株式会社 磁気記録媒体の製造方法
JP6767256B2 (ja) * 2016-12-21 2020-10-14 昭和電工株式会社 磁気記録媒体の製造方法
JP7160705B2 (ja) * 2019-01-28 2022-10-25 株式会社東芝 電磁波減衰体及び電子装置
JP7244721B2 (ja) * 2019-04-09 2023-03-23 株式会社レゾナック 磁気記録媒体および磁気記憶装置
JP7011005B2 (ja) * 2020-08-04 2022-02-10 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
JP7011006B2 (ja) * 2020-08-05 2022-01-26 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

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006048900A (ja) * 2004-07-05 2006-02-16 Fuji Electric Device Technology Co Ltd 垂直磁気記録媒体
JP2006209943A (ja) * 2005-01-26 2006-08-10 Hitachi Global Storage Technologies Netherlands Bv 垂直記録層に磁気トルク層を結合した垂直磁気記録媒体
JP2006309926A (ja) * 2005-03-30 2006-11-09 Tohoku Univ 垂直磁気記録媒体および磁気記録再生装置
JP2006351058A (ja) * 2005-06-13 2006-12-28 Tohoku Univ 負異方性交換結合型磁気記録媒体及び磁気記録再生装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004090874A1 (en) * 2003-04-07 2004-10-21 Showa Denko K. K. Magnetic recording medium, method for producing thereof, and magnetic recording and reproducing apparatus.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006048900A (ja) * 2004-07-05 2006-02-16 Fuji Electric Device Technology Co Ltd 垂直磁気記録媒体
JP2006209943A (ja) * 2005-01-26 2006-08-10 Hitachi Global Storage Technologies Netherlands Bv 垂直記録層に磁気トルク層を結合した垂直磁気記録媒体
JP2006309926A (ja) * 2005-03-30 2006-11-09 Tohoku Univ 垂直磁気記録媒体および磁気記録再生装置
JP2006351058A (ja) * 2005-06-13 2006-12-28 Tohoku Univ 負異方性交換結合型磁気記録媒体及び磁気記録再生装置

Also Published As

Publication number Publication date
TW200921653A (en) 2009-05-16
JP2008287829A (ja) 2008-11-27
US20100165510A1 (en) 2010-07-01

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