GB1111159A - Magnetic alloy for data storage devices - Google Patents

Magnetic alloy for data storage devices

Info

Publication number
GB1111159A
GB1111159A GB40199/64A GB4019964A GB1111159A GB 1111159 A GB1111159 A GB 1111159A GB 40199/64 A GB40199/64 A GB 40199/64A GB 4019964 A GB4019964 A GB 4019964A GB 1111159 A GB1111159 A GB 1111159A
Authority
GB
United Kingdom
Prior art keywords
data storage
storage devices
magnetic alloy
c6h5o7sh2o
nah2po2
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.)
Expired
Application number
GB40199/64A
Inventor
John Duckles Underwood
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB40199/64A priority Critical patent/GB1111159A/en
Priority to US480812A priority patent/US3469973A/en
Priority to DEJ29035A priority patent/DE1275844B/en
Priority to NL6512652A priority patent/NL6512652A/xx
Priority to BE670388D priority patent/BE670388A/xx
Priority to FR33413A priority patent/FR1448671A/en
Publication of GB1111159A publication Critical patent/GB1111159A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C23C18/48—Coating with alloys
    • C23C18/50—Coating with alloys with alloys based on iron, cobalt or nickel
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F10/00—Thin magnetic films, e.g. of one-domain structure
    • H01F10/08—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers
    • H01F10/10—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/14—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for applying magnetic films to substrates
    • H01F41/22—Heat treatment; Thermal decomposition; Chemical vapour deposition
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/14—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for applying magnetic films to substrates
    • H01F41/24—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for applying magnetic films to substrates from liquids
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P3/00—Waveguides; Transmission lines of the waveguide type
    • H01P3/02—Waveguides; Transmission lines of the waveguide type with two longitudinal conductors
    • H01P3/08—Microstrips; Strip lines

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemically Coating (AREA)

Abstract

An electroless plating bath for depositing a nickel-cobalt-phosphorus alloy comprises, NiCl2 6H2O 11.5 to 22.5 g./l., CoCl2 6H2O 12.5 to 19 g./l., an alkaline hypophosphite, e.g. 14.9 g./l. of NaH2PO2, Na3 C6H5O7SH2O 50 g./l., NH4Cl 40 g./l., the solution having a pH of 5.8 to 6.4 which is adjusted by NH4OH. The substrate may be non-metallic or a metal, e.g. copper, which may be sensitized with an aluminium wire.
GB40199/64A 1964-10-02 1964-10-02 Magnetic alloy for data storage devices Expired GB1111159A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB40199/64A GB1111159A (en) 1964-10-02 1964-10-02 Magnetic alloy for data storage devices
US480812A US3469973A (en) 1964-10-02 1965-08-18 Magnetic alloy for data storage devices
DEJ29035A DE1275844B (en) 1964-10-02 1965-09-22 Chemically reductive immersion bath for electroless deposition of magnetizable nickel-cobalt layers
NL6512652A NL6512652A (en) 1964-10-02 1965-09-30
BE670388D BE670388A (en) 1964-10-02 1965-10-01
FR33413A FR1448671A (en) 1964-10-02 1965-10-01 Process for obtaining magnetic alloys applicable in particular to data recording devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB40199/64A GB1111159A (en) 1964-10-02 1964-10-02 Magnetic alloy for data storage devices

Publications (1)

Publication Number Publication Date
GB1111159A true GB1111159A (en) 1968-04-24

Family

ID=10413702

Family Applications (1)

Application Number Title Priority Date Filing Date
GB40199/64A Expired GB1111159A (en) 1964-10-02 1964-10-02 Magnetic alloy for data storage devices

Country Status (5)

Country Link
US (1) US3469973A (en)
BE (1) BE670388A (en)
DE (1) DE1275844B (en)
GB (1) GB1111159A (en)
NL (1) NL6512652A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2329433A1 (en) * 1972-06-09 1973-12-20 Fuji Photo Film Co Ltd Magnetic recording material - formed by electroless deposition of ferromagnetic metal in magnetic field

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3721870A (en) * 1971-06-25 1973-03-20 Welwyn Electric Ltd Capacitor
CN103397360A (en) * 2010-06-25 2013-11-20 杨红宇 Brush plating solution

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2644787A (en) * 1950-01-05 1953-07-07 Eckert Mauchly Comp Corp Electrodeposition of a magnetic coating
US2643221A (en) * 1950-11-30 1953-06-23 Us Army Electrodeposition of phosphorusnickel and phosphorus-cobalt alloys
DE1127682B (en) * 1956-06-21 1962-04-12 Pittsburgh Plate Glass Co Chemical nickel plating bath and process
DE1160263B (en) * 1960-05-19 1963-12-27 Ncr Co Aqueous bath solution for the deposition of a magnetizable nickel-cobalt coating
GB1052649A (en) * 1964-06-05

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2329433A1 (en) * 1972-06-09 1973-12-20 Fuji Photo Film Co Ltd Magnetic recording material - formed by electroless deposition of ferromagnetic metal in magnetic field

Also Published As

Publication number Publication date
BE670388A (en) 1966-04-01
US3469973A (en) 1969-09-30
DE1275844B (en) 1968-08-22
NL6512652A (en) 1966-04-04

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