WO2002042511A3 - Method of coating smooth electroless nickel on magnetic memory disks and related memory devices - Google Patents

Method of coating smooth electroless nickel on magnetic memory disks and related memory devices Download PDF

Info

Publication number
WO2002042511A3
WO2002042511A3 PCT/US2001/043232 US0143232W WO0242511A3 WO 2002042511 A3 WO2002042511 A3 WO 2002042511A3 US 0143232 W US0143232 W US 0143232W WO 0242511 A3 WO0242511 A3 WO 0242511A3
Authority
WO
WIPO (PCT)
Prior art keywords
disks
magnetic
electroless nickel
coated
memory devices
Prior art date
Application number
PCT/US2001/043232
Other languages
French (fr)
Other versions
WO2002042511A2 (en
Inventor
Leonard Nanis
Original Assignee
Leonard Nanis
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 Leonard Nanis filed Critical Leonard Nanis
Priority to GB0310475A priority Critical patent/GB2384788B/en
Priority to AU2002232414A priority patent/AU2002232414A1/en
Publication of WO2002042511A2 publication Critical patent/WO2002042511A2/en
Publication of WO2002042511A3 publication Critical patent/WO2002042511A3/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
    • G11B5/73—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
    • G11B5/739—Magnetic recording media substrates
    • G11B5/73923—Organic polymer substrates
    • 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
    • G11B5/62—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
    • G11B5/739—Magnetic recording media substrates
    • G11B5/73911—Inorganic substrates
    • 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
    • G11B5/739—Magnetic recording media substrates
    • G11B5/73911—Inorganic substrates
    • G11B5/73913—Composites or coated substrates
    • 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
    • G11B5/739—Magnetic recording media substrates
    • G11B5/73911—Inorganic substrates
    • G11B5/73917—Metallic substrates, i.e. elemental metal or metal alloy substrates
    • G11B5/73919—Aluminium or titanium elemental or alloy substrates
    • 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
    • G11B5/739—Magnetic recording media substrates
    • G11B5/73911—Inorganic substrates
    • G11B5/73921—Glass or ceramic substrates

Abstract

A method of manufacture of thin film magnetic disks and other useful articles of similar planar geometry in which a non-magnetic layer (102) is first deposited on one or both sides of the disk (100) or article substrate (100) to mask chemical and mechanically induced heterogeneities introduced by pre-polishing to achieve a smooth finish, typically resulting in cold-working of the surface, and to also bind to the substrate (100) and is then coated with a thin layer of metal selected to either reactively or catalytically initiate smooth, electroless deposition of a non-magnetic nickel alloy (104) which is subsequently polished and coated with additional thin layers (106, 107, 108, 109, 110) to provide magnetic read-write capability. A disk drive using one or more of such disks is provided.
PCT/US2001/043232 2000-11-21 2001-11-20 Method of coating smooth electroless nickel on magnetic memory disks and related memory devices WO2002042511A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB0310475A GB2384788B (en) 2000-11-21 2001-11-20 Method of coating smooth electroless nickel on magnetic memory disks and related memory devices
AU2002232414A AU2002232414A1 (en) 2000-11-21 2001-11-20 Method of coating smooth electroless nickel on magnetic memory disks and related memory devices

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US25236500P 2000-11-21 2000-11-21
US60/252,365 2000-11-21
US09/894,375 US6977030B2 (en) 2000-11-21 2001-06-27 Method of coating smooth electroless nickel on magnetic memory disks and related memory devices
US09/894,375 2001-06-27

Publications (2)

Publication Number Publication Date
WO2002042511A2 WO2002042511A2 (en) 2002-05-30
WO2002042511A3 true WO2002042511A3 (en) 2002-09-06

Family

ID=26942266

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/043232 WO2002042511A2 (en) 2000-11-21 2001-11-20 Method of coating smooth electroless nickel on magnetic memory disks and related memory devices

Country Status (4)

Country Link
US (2) US6977030B2 (en)
AU (1) AU2002232414A1 (en)
GB (1) GB2384788B (en)
WO (1) WO2002042511A2 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6689413B2 (en) * 2000-09-15 2004-02-10 Seagate Technology Llc Using plated surface for recording media without polishing
US7005751B2 (en) * 2003-04-10 2006-02-28 Formfactor, Inc. Layered microelectronic contact and method for fabricating same
US7882616B1 (en) * 2004-09-02 2011-02-08 Seagate Technology Llc Manufacturing single-sided storage media
US7651794B2 (en) * 2005-04-28 2010-01-26 Hitachi Global Storage Technologies Netherlands B.V. Adhesion layer for thin film magnetic recording medium
US20080308425A1 (en) * 2007-06-12 2008-12-18 Honeywell International, Inc. Corrosion and wear resistant coating for magnetic steel
JP5006145B2 (en) * 2007-09-19 2012-08-22 株式会社リコー Manufacturing method of developer regulating member
US8404369B2 (en) 2010-08-03 2013-03-26 WD Media, LLC Electroless coated disks for high temperature applications and methods of making the same
US20120111360A1 (en) * 2010-11-10 2012-05-10 Helmuth Treichel Method and Apparatus for Cleaning a Substrate
US20120247223A1 (en) * 2011-03-30 2012-10-04 Canada Pipeline Accessories, Co. Ltd. Electroless Plated Fluid Flow Conditioner and Pipe Assembly
TWI672396B (en) * 2017-04-14 2019-09-21 美商卡博特微電子公司 Chemical-mechanical processing slurry and methods for processing a nickel substrate surface
DE102017213170A1 (en) * 2017-07-31 2019-01-31 Infineon Technologies Ag SOLDERING A LADDER TO ALUMINUM METALLIZATION

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4929499A (en) * 1988-04-20 1990-05-29 Magnetic Peripherals Inc. Use of nickel-phosphorous undercoat for particulate media in magnetic storage devices
WO1994015720A1 (en) * 1993-01-07 1994-07-21 Akashic Memories Corporation Magnetic recording media on non-metallic substrates and methods for their production
US5405646A (en) * 1992-10-14 1995-04-11 Nanis; Leonard Method of manufacture thin film magnetic disk
US5569506A (en) * 1993-10-06 1996-10-29 International Business Machines Corporation Magnetic recording disk and disk drive with improved head-disk interface

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5082747A (en) * 1985-11-12 1992-01-21 Hedgcoth Virgle L Magnetic recording disk and sputtering process and apparatus for producing same
DE69027053T2 (en) * 1989-01-28 1996-12-12 Canon Kk Multi-color ink jet recording method and device
US5250339A (en) * 1989-10-09 1993-10-05 Nihon Shinku Gijutsu Kabushiki Kaisha Magnetic recording medium
US5316844A (en) * 1990-04-16 1994-05-31 Hoya Electronics Corporation Magnetic recording medium comprising an aluminum alloy substrate, now magnetic underlayers, magnetic layer, protective layer, particulate containing protective layer and lubricant layer
JPH05114127A (en) * 1991-10-23 1993-05-07 Hitachi Ltd Magnetic disk and production thereof and magnetic disk device
JPH05225560A (en) * 1992-02-12 1993-09-03 Nkk Corp Production of magnetic disk substrate made of titanium
JPH06162493A (en) * 1992-11-18 1994-06-10 Nec Ibaraki Ltd Substrate for magnetic disk
JP3107480B2 (en) * 1993-06-16 2000-11-06 日本鋼管株式会社 Titanium substrate for magnetic disk
KR19980702586A (en) * 1995-03-08 1998-07-15 미가꾸 다까하시 Magnetic recording medium and manufacturing method thereof
GB2299991B (en) * 1995-04-20 1998-09-09 Ag Technology Corp Glass substrate for magnetic disk
US5871810A (en) * 1995-06-05 1999-02-16 International Business Machines Corporation Plating on nonmetallic disks
US5747135A (en) 1995-12-08 1998-05-05 Aluminum Company Of America Thin film pretreatment for memory disks and associated methods
US5980997A (en) * 1996-06-03 1999-11-09 Komag, Incorporated Method for preparing a substrate for a magnetic disk
US6152976A (en) * 1996-08-30 2000-11-28 Showa Denko Kabushiki Kaisha Abrasive composition for disc substrate, and process for polishing disc substrate
MY124578A (en) * 1997-06-17 2006-06-30 Showa Denko Kk Magnetic hard disc substrate and process for manufacturing the same
US6030681A (en) * 1997-07-10 2000-02-29 Raychem Corporation Magnetic disk comprising a substrate with a cermet layer on a porcelain
US6106927A (en) * 1998-02-03 2000-08-22 Seagate Technology, Inc. Ultra-smooth as-deposited electroless nickel coatings
US6316097B1 (en) * 1998-09-28 2001-11-13 Seagate Technology Llc Electroless plating process for alternative memory disk substrates
US6143375A (en) * 1999-01-28 2000-11-07 Komag, Incorporated Method for preparing a substrate for a magnetic disk
US6687197B1 (en) * 1999-09-20 2004-02-03 Fujitsu Limited High density information recording medium and slider having rare earth metals

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4929499A (en) * 1988-04-20 1990-05-29 Magnetic Peripherals Inc. Use of nickel-phosphorous undercoat for particulate media in magnetic storage devices
US5405646A (en) * 1992-10-14 1995-04-11 Nanis; Leonard Method of manufacture thin film magnetic disk
WO1994015720A1 (en) * 1993-01-07 1994-07-21 Akashic Memories Corporation Magnetic recording media on non-metallic substrates and methods for their production
US5569506A (en) * 1993-10-06 1996-10-29 International Business Machines Corporation Magnetic recording disk and disk drive with improved head-disk interface

Also Published As

Publication number Publication date
GB2384788A (en) 2003-08-06
GB0310475D0 (en) 2003-06-11
AU2002232414A1 (en) 2002-06-03
US6986956B2 (en) 2006-01-17
GB2384788B (en) 2004-10-20
US20030198836A1 (en) 2003-10-23
US6977030B2 (en) 2005-12-20
WO2002042511A2 (en) 2002-05-30
US20020061424A1 (en) 2002-05-23

Similar Documents

Publication Publication Date Title
US5733370A (en) Method of manufacturing a bicrystal cluster magnetic recording medium
EP0145157A1 (en) Thin film magnetic recording media
JPS63311626A (en) Manufacture of magnetic recording disc
JPH01251308A (en) Floating magnetic head and its manufacture
JP2004178794A5 (en)
MY137879A (en) Texturing of magnetic disk substrates
WO2002042511A3 (en) Method of coating smooth electroless nickel on magnetic memory disks and related memory devices
JP3018762B2 (en) Magnetic recording medium and method of manufacturing the same
US6316097B1 (en) Electroless plating process for alternative memory disk substrates
US4631202A (en) Thin film magnetic recording film
JPH06349054A (en) Magnetic recording medium and its production
JPH03104017A (en) Magtetic recording medium having smooth surface
JPS61142525A (en) Magnetic recording medium
JPH029016A (en) Thin film magnetic disk
JPH04195717A (en) Magnetic recording medium, its manufacture and magnetic recorder
JPH0241089B2 (en)
JPH08329442A (en) Magnetic recording medium
JPH09147357A (en) Production of magnetic recording medium
JPH0514325B2 (en)
JPS62219227A (en) Magnetic memory body
JP2593590B2 (en) Manufacturing method of magnetic recording media
JPS59171031A (en) Magnetic disk
JPH05120663A (en) Magnetic recording medium, production of the same and its device
JPH04143920A (en) Magnetic disk
JPH04157626A (en) Manufacture of magnetic recording medium

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A2

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US US UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

ENP Entry into the national phase

Ref document number: 0310475

Country of ref document: GB

Kind code of ref document: A

Free format text: PCT FILING DATE = 20011120

Format of ref document f/p: F

121 Ep: the epo has been informed by wipo that ep was designated in this application
REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP

WWW Wipo information: withdrawn in national office

Country of ref document: JP