GB2334134A - Magnetic recording medium comprising a nickel aluminum or iron aluminum underlayer - Google Patents

Magnetic recording medium comprising a nickel aluminum or iron aluminum underlayer

Info

Publication number
GB2334134A
GB2334134A GB9908669A GB9908669A GB2334134A GB 2334134 A GB2334134 A GB 2334134A GB 9908669 A GB9908669 A GB 9908669A GB 9908669 A GB9908669 A GB 9908669A GB 2334134 A GB2334134 A GB 2334134A
Authority
GB
United Kingdom
Prior art keywords
underlayer
magnetic recording
aluminum
recording medium
depositing
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.)
Granted
Application number
GB9908669A
Other versions
GB2334134B (en
GB9908669D0 (en
Inventor
Qixu Chen
Jyh-Kau Chang
Charles Leu
Ga-Lane Chen
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.)
Seagate Technology LLC
Original Assignee
Seagate Technology LLC
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 Seagate Technology LLC filed Critical Seagate Technology LLC
Publication of GB9908669D0 publication Critical patent/GB9908669D0/en
Publication of GB2334134A publication Critical patent/GB2334134A/en
Application granted granted Critical
Publication of GB2334134B publication Critical patent/GB2334134B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G11B5/73—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
    • 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
    • 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
    • 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
    • G11B5/85—Coating a support with a magnetic layer by vapour deposition
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/90—Magnetic feature

Landscapes

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

Abstract

A magnetic recording medium is formed by depositing a Cr-containing sub-underlayer (52A) on a surface oxidized seed layer, such as NiP (51A) with direct current (DC) magnetron sputtering, depositing an NiAl or FeAl underlayer (53A) on the sub-underlayer, and depositing a Cr-containing intermediate layer (54A) on the NiAl or FeAl underlayer. The medium features high coercivity, low noise, and (200)-dominant underlayer crystallographic orientation, even with sub-underlayer deposition at temperatures as low as about 25 ‹C. The medium is suitable for high density longitudinal magnetic recording.
GB9908669A 1996-10-17 1997-02-26 Magnetic recording medium comprising a nickel aluminum or iron aluminum underlayer Expired - Fee Related GB2334134B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US2888296P 1996-10-17 1996-10-17
PCT/US1997/002169 WO1998016923A1 (en) 1996-10-17 1997-02-26 Magnetic recording medium comprising a nickel aluminum or iron aluminum underlayer

Publications (3)

Publication Number Publication Date
GB9908669D0 GB9908669D0 (en) 1999-06-09
GB2334134A true GB2334134A (en) 1999-08-11
GB2334134B GB2334134B (en) 2000-10-25

Family

ID=21846040

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9908669A Expired - Fee Related GB2334134B (en) 1996-10-17 1997-02-26 Magnetic recording medium comprising a nickel aluminum or iron aluminum underlayer

Country Status (5)

Country Link
JP (1) JP3983813B2 (en)
KR (1) KR100456166B1 (en)
DE (1) DE19782066T1 (en)
GB (1) GB2334134B (en)
WO (1) WO1998016923A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2350471B (en) * 1998-02-10 2002-04-17 Seagate Technology Llc Magnetic recording medium with patterned substrate

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SG97791A1 (en) * 1999-05-13 2003-08-20 Inst Data Storage High coercivity cobalt based alloy longitudinal recording media and method for its fabrication
US6411476B1 (en) * 1999-10-28 2002-06-25 International Business Machines Corporation Trilayer seed layer structure for spin valve sensor
US6908689B1 (en) * 2001-12-20 2005-06-21 Seagate Technology Llc Ruthenium-aluminum underlayer for magnetic recording media

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4833020A (en) * 1987-01-29 1989-05-23 Hitachi, Ltd. Magnetic recording medium
US4900397A (en) * 1987-08-08 1990-02-13 Basf Aktiengesellschaft Production of magnetic recording media
US5302434A (en) * 1992-08-07 1994-04-12 International Business Machines Corporation Magnetic recording disk for contact recording

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4833020A (en) * 1987-01-29 1989-05-23 Hitachi, Ltd. Magnetic recording medium
US4900397A (en) * 1987-08-08 1990-02-13 Basf Aktiengesellschaft Production of magnetic recording media
US5302434A (en) * 1992-08-07 1994-04-12 International Business Machines Corporation Magnetic recording disk for contact recording

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
IEEE Transactions on Magnetics, Vol 31, No 6 (Nov 1995) pages 2228 to 2730 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2350471B (en) * 1998-02-10 2002-04-17 Seagate Technology Llc Magnetic recording medium with patterned substrate

Also Published As

Publication number Publication date
JP2001503180A (en) 2001-03-06
DE19782066T1 (en) 1999-09-09
KR20000049231A (en) 2000-07-25
JP3983813B2 (en) 2007-09-26
WO1998016923A1 (en) 1998-04-23
GB2334134B (en) 2000-10-25
KR100456166B1 (en) 2004-11-09
GB9908669D0 (en) 1999-06-09

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20100226