GB1384109A - Forming magnetic films on substrates - Google Patents

Forming magnetic films on substrates

Info

Publication number
GB1384109A
GB1384109A GB3712772A GB3712772A GB1384109A GB 1384109 A GB1384109 A GB 1384109A GB 3712772 A GB3712772 A GB 3712772A GB 3712772 A GB3712772 A GB 3712772A GB 1384109 A GB1384109 A GB 1384109A
Authority
GB
United Kingdom
Prior art keywords
substrate
film
iron oxide
substrates
magnetic iron
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
GB3712772A
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 GB1384109A publication Critical patent/GB1384109A/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
    • H01F10/18—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition being compounds
    • 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
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/0021—Reactive sputtering or evaporation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Power Engineering (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
  • Thin Magnetic Films (AREA)
  • Magnetic Record Carriers (AREA)

Abstract

1384109 Magnetic iron oxide films INTERNATIONAL BUSINESS MACHINES CORP 9 Aug 1972 [15 Sept 1971] 37127/72 Heading C1A A film of magnetic iron oxide is prepared by vapour depositing iron on to a substrate at a rate of from 2 to 50Š per second in an oxygen atmosphere at a pressure between 10<SP>-6</SP> and 10<SP>-4</SP> Torr. whereby as the iron is deposited on the substrate it reacts with the oxygen to form a film of magnetic iron oxide on the substrate. The substrate may be aluminium at a temperature of 20‹ to 220‹ C. and the rate of vapour deposition and oxygen atmosphere pressure may be selected to maximize the abrasion resistance of the film. The deposited film may be annealed at above 150‹ C. and the coated substrate used in the manufacture of magnetic storage discs.
GB3712772A 1971-09-15 1972-08-09 Forming magnetic films on substrates Expired GB1384109A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712146008 DE2146008A1 (en) 1971-09-15 1971-09-15 METHOD FOR PRODUCING A MAGNETIC LAYER

Publications (1)

Publication Number Publication Date
GB1384109A true GB1384109A (en) 1975-02-19

Family

ID=5819563

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3712772A Expired GB1384109A (en) 1971-09-15 1972-08-09 Forming magnetic films on substrates

Country Status (4)

Country Link
JP (1) JPS4837695A (en)
DE (1) DE2146008A1 (en)
FR (1) FR2152580B1 (en)
GB (1) GB1384109A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5326407A (en) * 1976-08-21 1978-03-11 Nippon Gurafuto Kougiyou Kk Method of forming kerb stop on joint of construction
GB1596385A (en) * 1976-12-29 1981-08-26 Matsushita Electric Ind Co Ltd Methods and apparatus for manufacturing magnetic recording media
JPS55118620A (en) * 1979-03-06 1980-09-11 Nec Corp Manufacturing method of magnetic thin oxide film for magnetic recording media
JPS5626424A (en) * 1979-08-13 1981-03-14 Nec Corp Manufacture of thin-film oxide magnetic recording media
JPS62104017A (en) * 1985-10-30 1987-05-14 Toda Kogyo Corp Manufacture of ferro magnetic thin film of spinel type oxide

Also Published As

Publication number Publication date
DE2146008A1 (en) 1973-03-22
FR2152580B1 (en) 1975-08-22
FR2152580A1 (en) 1973-04-27
JPS4837695A (en) 1973-06-02

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee