GB1164670A - Method for Forming an Alloy Film by Electroplating - Google Patents

Method for Forming an Alloy Film by Electroplating

Info

Publication number
GB1164670A
GB1164670A GB55020/67A GB5502067A GB1164670A GB 1164670 A GB1164670 A GB 1164670A GB 55020/67 A GB55020/67 A GB 55020/67A GB 5502067 A GB5502067 A GB 5502067A GB 1164670 A GB1164670 A GB 1164670A
Authority
GB
United Kingdom
Prior art keywords
alloy
pulse
magnitude
electroplating
plating
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
GB55020/67A
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.)
International Business Machines Corp
Original Assignee
International Business Machines 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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of GB1164670A publication Critical patent/GB1164670A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/18—Electroplating using modulated, pulsed or reversing current

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Thin Magnetic Films (AREA)
  • Magnetic Heads (AREA)

Abstract

1,164,670. Magnetic structures. INTERNATIONAL BUSINESS MACHINES CORP. 4 Dec., 1967 [15 Dec., 1966], No. 55020/67. Heading H1H. [Also in Division C7] A magnetic alloy film is formed on a conductive substrate by electroplating from an electrolyte containing ions of the alloy constituents by applying one or more current pulses in which the magnitude of the or each pulse is initially significantly greater than the current required for plating the alloy constituents in a desired proportion under equilibrium conditions and in which the magnitude of the pulse is subsequently decreased with time so that throughout the process the proportions of the alloy constituents deposited are constant. Typically the pulse magnitude is decreased to the equilibrium value and is thereafter maintained constant for a period. If a series of pulses is used, agitation of the electrolyte may be effected at the end of each pulse. As described the method is applied to electroplating on to a smooth rolled copper sheet or vapour deposited silver or electroless silver or copper a Ni/Fe alloy. Details are given of current values for obtaining specific thicknesses of specific alloys. Plating is effected in a magnetic field at the centre of a Helmholtz coil. Reference is made to plating ternary alloys NiFeCu, e.g. as in Specification 1,139,987, NiFeCo and a four component alloy NiFeCoCu, all of zero magnetostriction.
GB55020/67A 1966-12-15 1967-12-04 Method for Forming an Alloy Film by Electroplating Expired GB1164670A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US60195166A 1966-12-15 1966-12-15

Publications (1)

Publication Number Publication Date
GB1164670A true GB1164670A (en) 1969-09-17

Family

ID=24409381

Family Applications (1)

Application Number Title Priority Date Filing Date
GB55020/67A Expired GB1164670A (en) 1966-12-15 1967-12-04 Method for Forming an Alloy Film by Electroplating

Country Status (4)

Country Link
DE (1) DE1621094A1 (en)
FR (1) FR1540853A (en)
GB (1) GB1164670A (en)
NL (1) NL6715559A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4092226A (en) * 1974-12-11 1978-05-30 Nikolaus Laing Process for the treatment of metal surfaces by electro-deposition of metal coatings at high current densities
EP0064786A2 (en) * 1981-05-01 1982-11-17 Koninklijke Philips Electronics N.V. Magnetic sensor and magnetically permeable component for a magnetic sensor
CN113629006A (en) * 2021-07-26 2021-11-09 长江存储科技有限责任公司 Method for forming copper structure

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4092226A (en) * 1974-12-11 1978-05-30 Nikolaus Laing Process for the treatment of metal surfaces by electro-deposition of metal coatings at high current densities
EP0064786A2 (en) * 1981-05-01 1982-11-17 Koninklijke Philips Electronics N.V. Magnetic sensor and magnetically permeable component for a magnetic sensor
EP0064786A3 (en) * 1981-05-01 1983-01-19 Koninklijke Philips Electronics N.V. Magnetic sensor and magnetically permeable component for a magnetic sensor
CN113629006A (en) * 2021-07-26 2021-11-09 长江存储科技有限责任公司 Method for forming copper structure
CN113629006B (en) * 2021-07-26 2024-04-23 长江存储科技有限责任公司 Method for forming copper structure

Also Published As

Publication number Publication date
DE1621094A1 (en) 1971-04-29
NL6715559A (en) 1968-06-17
FR1540853A (en) 1968-09-27

Similar Documents

Publication Publication Date Title
US3031386A (en) Electrolytic bath for use in electrodeposition of ferromagnetic compositions
GB1139987A (en) Method of manufacturing a magnetic thin film device
GB1305632A (en)
GB1143757A (en)
Wertheim et al. Fe57 Mössbauer effect in nickel hydride
NL154354B (en) PREPARATION MATERIAL FOR THE MANUFACTURE OF A PERMANENT MAGNET, PROCEDURE FOR MANUFACTURE OF THIS PREPARATION, AND PERMANENT MAGNET CONSTRUCTED FROM THE PRIMARY MATERIAL.
US4108739A (en) Plating method for memory elements
GB1164670A (en) Method for Forming an Alloy Film by Electroplating
US3047475A (en) Method for producing magnetic materials
US3622469A (en) Method for edge-plating coupled film devices
DE1564554A1 (en) Coupled, thin ferromagnetic layers with different coercive fields and a magnetostriction of approximately zero and method for their production
GB859725A (en) Improvements in or relating to methods of depositing nickel-iron films
DE1192484B (en) Bath and process for the galvanic deposition of magnetic alloy coatings and process for the production of such a bath
GB1034946A (en) Improved process for producing magnetic thin film elements and elements produced thereby
GB1311330A (en) Protective coating for thin ferromagnetic films
US2794775A (en) Electroplating with tungsten
GB1341592A (en) Composite metallic wire
GB1026246A (en) Improvements in or relating to magnetic circuit elements and to their fabrication
US3193362A (en) Magnetic materials
EP0736884B1 (en) Electrolytic coating process for rare-earth based permanent magnets with minimal corrosion
GB790015A (en) Coated wire
GB786768A (en) Aqueous zinc-tin alloy electroplating bath
GB1199459A (en) Improvements in or relating to Ferromagnetic Films.
GB1136492A (en) Improvements in electrolytic processes for the production of thin ferromagnetic film
SU456045A1 (en) Method of electrochemical deposition of coatings of magnetic alloys

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee