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WO2008149813A1 - 垂直磁気記録媒体の製造方法 - Google Patents

垂直磁気記録媒体の製造方法 Download PDF

Info

Publication number
WO2008149813A1
WO2008149813A1 PCT/JP2008/060053 JP2008060053W WO2008149813A1 WO 2008149813 A1 WO2008149813 A1 WO 2008149813A1 JP 2008060053 W JP2008060053 W JP 2008060053W WO 2008149813 A1 WO2008149813 A1 WO 2008149813A1
Authority
WO
WIPO (PCT)
Prior art keywords
magnetic recording
recording medium
substrate layer
producing
vertical magnetic
Prior art date
Application number
PCT/JP2008/060053
Other languages
English (en)
French (fr)
Inventor
Yoshiaki Sonobe
Kong Kim
Original Assignee
Hoya Corporation
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 Hoya Corporation filed Critical Hoya Corporation
Priority to US12/602,430 priority Critical patent/US8298689B2/en
Priority to JP2009517847A priority patent/JP5607359B2/ja
Publication of WO2008149813A1 publication Critical patent/WO2008149813A1/ja

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
    • G11B5/73—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
    • G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
    • G11B5/851—Coating a support with a magnetic layer by sputtering

Landscapes

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

Abstract

【課題】本発明は、低いガス圧で成膜しても高い保磁力を発揮する下地層を提案することにより、高記録密度化と高い衝撃耐性、およびコロージョンの防止をあわせて実現しうる磁気記録媒体の製造方法を提案することを目的としている。 【解決手段】本発明にかかる垂直磁気記録媒体の製造方法は、基板上に、結晶粒子を柱状に成長させたグラニュラー構造を有する非磁性の下地層１８を成膜し、磁性粒子を柱状に成長させたグラニュラー構造を有する磁気記録層２０を成膜する垂直磁気記録媒体の製造方法において、下地層１８はＣｏＣｒまたはＣｏＣｒＸ（Ｘは非磁性物質）、ＣｏＣｒの酸化物、ＣｏＣｒＸの酸化物のいずれかとし、下地層１８の成膜ガス圧は４Ｐａ以下であることを特徴とする。
PCT/JP2008/060053 2007-05-31 2008-05-30 垂直磁気記録媒体の製造方法 WO2008149813A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US12/602,430 US8298689B2 (en) 2007-05-31 2008-05-30 Method of manufacturing a perpendicular magnetic recording medium
JP2009517847A JP5607359B2 (ja) 2007-05-31 2008-05-30 垂直磁気記録媒体の製造方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007146330 2007-05-31
JP2007-146330 2007-05-31

Publications (1)

Publication Number Publication Date
WO2008149813A1 true WO2008149813A1 (ja) 2008-12-11

Family

ID=40093631

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/060053 WO2008149813A1 (ja) 2007-05-31 2008-05-30 垂直磁気記録媒体の製造方法

Country Status (3)

Country Link
US (1) US8298689B2 (ja)
JP (1) JP5607359B2 (ja)
WO (1) WO2008149813A1 (ja)

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Also Published As

Publication number Publication date
JP5607359B2 (ja) 2014-10-15
US20100196741A1 (en) 2010-08-05
JPWO2008149813A1 (ja) 2010-08-26
US8298689B2 (en) 2012-10-30

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