DE2236580A1 - Verfahren zum herstellen einer magnetischen aufzeichnungsschicht - Google Patents

Verfahren zum herstellen einer magnetischen aufzeichnungsschicht

Info

Publication number
DE2236580A1
DE2236580A1 DE2236580A DE2236580A DE2236580A1 DE 2236580 A1 DE2236580 A1 DE 2236580A1 DE 2236580 A DE2236580 A DE 2236580A DE 2236580 A DE2236580 A DE 2236580A DE 2236580 A1 DE2236580 A1 DE 2236580A1
Authority
DE
Germany
Prior art keywords
bath
range
cobalt
layer
concentration
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.)
Pending
Application number
DE2236580A
Other languages
German (de)
English (en)
Inventor
Betty Wong Tung
Henry James White
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.)
NCR Voyix Corp
Original Assignee
NCR 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 NCR Corp filed Critical NCR Corp
Publication of DE2236580A1 publication Critical patent/DE2236580A1/de
Pending 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
    • G11B5/65—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
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
    • C23C18/31—Coating with metals
    • C23C18/32—Coating with nickel, cobalt or mixtures thereof with phosphorus or boron
    • C23C18/34—Coating with nickel, cobalt or mixtures thereof with phosphorus or boron using reducing agents
    • C23C18/36—Coating with nickel, cobalt or mixtures thereof with phosphorus or boron using reducing agents using hypophosphites

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
  • Chemically Coating (AREA)
  • Magnetic Record Carriers (AREA)
DE2236580A 1971-07-29 1972-07-26 Verfahren zum herstellen einer magnetischen aufzeichnungsschicht Pending DE2236580A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US16710671A 1971-07-29 1971-07-29

Publications (1)

Publication Number Publication Date
DE2236580A1 true DE2236580A1 (de) 1973-02-08

Family

ID=22605960

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2236580A Pending DE2236580A1 (de) 1971-07-29 1972-07-26 Verfahren zum herstellen einer magnetischen aufzeichnungsschicht

Country Status (5)

Country Link
CA (1) CA980505A (OSRAM)
DE (1) DE2236580A1 (OSRAM)
FR (1) FR2147239B3 (OSRAM)
GB (1) GB1359945A (OSRAM)
IT (1) IT963522B (OSRAM)

Also Published As

Publication number Publication date
FR2147239B3 (OSRAM) 1975-09-05
CA980505A (en) 1975-12-30
GB1359945A (en) 1974-07-17
FR2147239A1 (OSRAM) 1973-03-09
IT963522B (it) 1974-01-21

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