WO2008133060A1 - 垂直磁気記録媒体 - Google Patents

垂直磁気記録媒体 Download PDF

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Publication number
WO2008133060A1
WO2008133060A1 PCT/JP2008/057206 JP2008057206W WO2008133060A1 WO 2008133060 A1 WO2008133060 A1 WO 2008133060A1 JP 2008057206 W JP2008057206 W JP 2008057206W WO 2008133060 A1 WO2008133060 A1 WO 2008133060A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
magnetic
magnetic recording
orientation control
perpendicular magnetic
Prior art date
Application number
PCT/JP2008/057206
Other languages
English (en)
French (fr)
Inventor
Hiroyuki Uwazumi
Yasushi Sakai
Shunji Takenoiri
Original Assignee
Fuji Electric Device Technology Co., Ltd.
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 Fuji Electric Device Technology Co., Ltd. filed Critical Fuji Electric Device Technology Co., Ltd.
Priority to US12/595,618 priority Critical patent/US8105707B2/en
Priority to JP2009511787A priority patent/JP4626861B2/ja
Publication of WO2008133060A1 publication Critical patent/WO2008133060A1/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
    • G11B5/65—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent characterised by its composition
    • G11B5/658—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent characterised by its composition containing oxygen, e.g. molecular oxygen or magnetic oxide
    • 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
    • G11B5/65—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent characterised by its composition
    • G11B5/657—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent characterised by its composition containing inorganic, non-oxide compound of Si, N, P, B, H or C, e.g. in metal alloy or compound
    • 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

Abstract

　本発明は、ＳＮＲを改善してさらなる高記録密度化が可能な垂直磁気記録媒体を提供する。本発明の媒体は、非磁性基体（１）上に、少なくとも、軟磁性層（２）、第一の配向制御層（３）、非磁性中間層（５）、垂直磁気記録層（６）、保護層（７）が順次積層された構造を有し；第一の配向制御層（３）がｆｃｃ構造を有する薄膜からなり；垂直磁気記録層（６）に接する非磁性中間層（５）が、ｈｃｐ構造を有する、好ましくは、ＲｕまたはＲｕを含む合金薄膜からなり；磁気記録層（６）が、好ましくは、強磁性を有するＣｏＰｔ合金を主体とする強磁性結晶粒とそれを取り巻く酸化物を主体とする非磁性粒界からなるグラニュラー磁性層からなり；第一の配向制御層（３）と非磁性中間層（５）の間に、少なくともＣｏとＣｒを含む合金からなり、非磁性中間層（５）に接する第二の配向制御層（４）を有する。
PCT/JP2008/057206 2007-04-13 2008-04-11 垂直磁気記録媒体 WO2008133060A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US12/595,618 US8105707B2 (en) 2007-04-13 2008-04-11 Perpendicular magnetic recording medium
JP2009511787A JP4626861B2 (ja) 2007-04-13 2008-04-11 垂直磁気記録媒体

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2007-106194 2007-04-13
JP2007106193 2007-04-13
JP2007-106193 2007-04-13
JP2007106194 2007-04-13

Publications (1)

Publication Number Publication Date
WO2008133060A1 true WO2008133060A1 (ja) 2008-11-06

Family

ID=39925518

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/057206 WO2008133060A1 (ja) 2007-04-13 2008-04-11 垂直磁気記録媒体

Country Status (3)

Country Link
US (1) US8105707B2 (ja)
JP (1) JP4626861B2 (ja)
WO (1) WO2008133060A1 (ja)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4940417B2 (ja) * 2008-08-28 2012-05-30 株式会社東芝 磁気記憶装置及び磁気記憶媒体
KR102451098B1 (ko) 2015-09-23 2022-10-05 삼성전자주식회사 자기 메모리 장치 및 이의 제조 방법

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001312815A (ja) * 2000-04-27 2001-11-09 Showa Denko Kk 磁気記録媒体、その製造方法、スパッタリングターゲットおよび磁気記録再生装置
JP2003077122A (ja) * 2001-08-31 2003-03-14 Fuji Electric Co Ltd 垂直磁気記録媒体及びその製造方法
JP2003123245A (ja) * 2001-08-01 2003-04-25 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
JP2004310910A (ja) * 2003-04-07 2004-11-04 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
WO2005088609A1 (ja) * 2004-03-15 2005-09-22 Fuji Electric Device Technology Co., Ltd. 垂直磁気記録媒体、その製造方法、および磁気記録装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MY138888A (en) 1999-07-16 2009-08-28 Showa Denko Kk Magnetic recording medium and magnetic recording and reproducing device.
JP3993786B2 (ja) * 2001-06-29 2007-10-17 富士通株式会社 磁気記録媒体
JP4214472B2 (ja) 2003-03-05 2009-01-28 富士電機デバイステクノロジー株式会社 垂直磁気記録媒体及びその製造方法
JP4761224B2 (ja) * 2006-10-12 2011-08-31 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

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001312815A (ja) * 2000-04-27 2001-11-09 Showa Denko Kk 磁気記録媒体、その製造方法、スパッタリングターゲットおよび磁気記録再生装置
JP2003123245A (ja) * 2001-08-01 2003-04-25 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
JP2003077122A (ja) * 2001-08-31 2003-03-14 Fuji Electric Co Ltd 垂直磁気記録媒体及びその製造方法
JP2004310910A (ja) * 2003-04-07 2004-11-04 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
WO2005088609A1 (ja) * 2004-03-15 2005-09-22 Fuji Electric Device Technology Co., Ltd. 垂直磁気記録媒体、その製造方法、および磁気記録装置

Also Published As

Publication number Publication date
JPWO2008133060A1 (ja) 2010-07-22
US8105707B2 (en) 2012-01-31
JP4626861B2 (ja) 2011-02-09
US20100165509A1 (en) 2010-07-01

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