GB1136492A - Improvements in electrolytic processes for the production of thin ferromagnetic film - Google Patents

Improvements in electrolytic processes for the production of thin ferromagnetic film

Info

Publication number
GB1136492A
GB1136492A GB14410/66A GB1441066A GB1136492A GB 1136492 A GB1136492 A GB 1136492A GB 14410/66 A GB14410/66 A GB 14410/66A GB 1441066 A GB1441066 A GB 1441066A GB 1136492 A GB1136492 A GB 1136492A
Authority
GB
United Kingdom
Prior art keywords
electrolyte
current density
contain
production
cathode
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
GB14410/66A
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.)
Bull General Electric NV
Original Assignee
Bull General Electric NV
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 Bull General Electric NV filed Critical Bull General Electric NV
Publication of GB1136492A publication Critical patent/GB1136492A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D3/00—Electroplating: Baths therefor
    • C25D3/02—Electroplating: Baths therefor from solutions
    • C25D3/56—Electroplating: Baths therefor from solutions of alloys
    • C25D3/562—Electroplating: Baths therefor from solutions of alloys containing more than 50% by weight of iron or nickel or cobalt
    • 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
    • H01F41/26—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 using electric currents, e.g. electroplating

Abstract

1,136,492. Magnetic structures. SOC. INDUSTRIELLE BULL - GENERAL ELECTRIC. 31 March, 1966 [2 April, 1965], No. 14410/66. Heading H1H. [Also in Division C7] A thin film of a Ni-Fe alloy of zero magnetostriction is deposited by electrolysis on a metal support used as cathode, at constant temperature and constant current density, without stirring, using an electrolyte having a pH of 2À5, and containing 0À25 g/l thiourea, >7 g/l Fe<SP>++</SP>, and >34 g/l Ni<SP>++</SP>, the Ni/Fe ion concentration ratio being 82-83/17-18. The electrolyte may contain NiSO 4 , FeSO 4 , H 3 BO 3 , and Na lauryl sulphate, and may be maintained under an inert gas, e.g. N 2 . The support may be planar or filiform. The anode compartment may be separated from the cathode compartment by a diaphragm and may contain Na 2 SO 4 and H 3 BO 3 . The temperature may be 18‹, 28‹, 38‹ or 45‹ C., the corresponding current density being about 2, 6À8, 17, and 30 mA/cm.<SP>2</SP> The film contains sulphur, and may have an anisotropy field of 2À5 Oe, a coercive field of 2À5 Oe, microscopic and macroscopic angular dispersions of 2 and 1 degrees resp., and a thickness of 150-250 Š.
GB14410/66A 1965-04-02 1966-03-31 Improvements in electrolytic processes for the production of thin ferromagnetic film Expired GB1136492A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR11756A FR1438564A (en) 1965-04-02 1965-04-02 Improvements in electrolytic processes for manufacturing ferromagnetic thin films

Publications (1)

Publication Number Publication Date
GB1136492A true GB1136492A (en) 1968-12-11

Family

ID=8575540

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14410/66A Expired GB1136492A (en) 1965-04-02 1966-03-31 Improvements in electrolytic processes for the production of thin ferromagnetic film

Country Status (6)

Country Link
US (1) US3489661A (en)
BE (1) BE678663A (en)
DE (1) DE1521007A1 (en)
FR (2) FR1438564A (en)
GB (1) GB1136492A (en)
NL (1) NL6604331A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2339797A (en) * 1998-07-22 2000-02-09 Telcon Ltd Magnetic alloys

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3645857A (en) * 1969-05-28 1972-02-29 Ferroxcube Corp Method of making plated wire memory element
FR2166305A1 (en) * 1972-01-07 1973-08-17 Honeywell Bull Magnetic memory element - with non-destructive read-out
ES2798874T3 (en) * 2017-09-21 2020-12-14 Hymeth Aps Procedure for preparing an electrocatalyst

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3047475A (en) * 1958-09-25 1962-07-31 Burroughs Corp Method for producing magnetic materials
NL243931A (en) * 1958-10-01
US3099803A (en) * 1959-07-02 1963-07-30 Bell Telephone Labor Inc Automatic frequency control for tunable oscillators
US3124520A (en) * 1959-09-28 1964-03-10 Electrode
GB925144A (en) * 1960-07-28 1963-05-01 Atomic Energy Authority Uk Improvements in or relating to methods of electro-depositing magnetic alloy films
US3261711A (en) * 1962-12-17 1966-07-19 Honeywell Inc Electroless plating

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2339797A (en) * 1998-07-22 2000-02-09 Telcon Ltd Magnetic alloys

Also Published As

Publication number Publication date
BE678663A (en) 1966-09-01
NL6604331A (en) 1966-10-03
DE1521007A1 (en) 1969-08-14
FR1438564A (en) 1966-05-13
FR143854A (en)
US3489661A (en) 1970-01-13

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