[go: up one dir, main page]

GB2002338A - Method of forming a magneto- optical polycrystalline cobalt ferrite layer on a substrate. - Google Patents

Method of forming a magneto- optical polycrystalline cobalt ferrite layer on a substrate.

Info

Publication number
GB2002338A
GB2002338A GB7833123A GB7833123A GB2002338A GB 2002338 A GB2002338 A GB 2002338A GB 7833123 A GB7833123 A GB 7833123A GB 7833123 A GB7833123 A GB 7833123A GB 2002338 A GB2002338 A GB 2002338A
Authority
GB
United Kingdom
Prior art keywords
substrate
magneto
forming
cobalt ferrite
ferrite layer
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.)
Granted
Application number
GB7833123A
Other versions
GB2002338B (en
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken 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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB2002338A publication Critical patent/GB2002338A/en
Application granted granted Critical
Publication of GB2002338B publication Critical patent/GB2002338B/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
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/0009—Materials therefor
    • G02F1/0036—Magneto-optical materials
    • 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
    • H01F10/20—Ferrites

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Optics & Photonics (AREA)
  • Manufacturing & Machinery (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Thin Magnetic Films (AREA)
  • Chemically Coating (AREA)
  • Compounds Of Iron (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Surface Treatment Of Glass (AREA)

Abstract

An aerosol comprising a solution (as the disperse phase) consisting of a solvent and salts of metals, the oxides of which metals form the desired ferrite, is sprayed onto a heated substrate. If necessary, the deposited layer is heated so that the cobalt ferrite has a spinel crystal structure. A preferred ferrite has composition CoxFe3-xO4 wherein 0.3 < x < 1.5
GB7833123A 1977-08-15 1978-08-11 Method of making ferrite layers Expired GB2002338B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7708959A NL7708959A (en) 1977-08-15 1977-08-15 PROCEDURE FOR FORMING A MAGNETO-OPTIC POLYCRYSTALLINE COBALT FERRITE LAYER AND COBALT FERRITE LAYER MANUFACTURED BY THE PROCESS.

Publications (2)

Publication Number Publication Date
GB2002338A true GB2002338A (en) 1979-02-21
GB2002338B GB2002338B (en) 1982-04-15

Family

ID=19829014

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7833123A Expired GB2002338B (en) 1977-08-15 1978-08-11 Method of making ferrite layers

Country Status (7)

Country Link
JP (1) JPS5435900A (en)
AU (1) AU521775B2 (en)
CA (1) CA1143258A (en)
DE (1) DE2835203A1 (en)
FR (1) FR2400493A1 (en)
GB (1) GB2002338B (en)
NL (1) NL7708959A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2533731A1 (en) * 1982-09-27 1984-03-30 Philips Nv THERMOMAGNETO-OPTICAL MEMORY DEVICE AND ITS RECORDING MEDIUM
EP0127243A1 (en) * 1983-05-31 1984-12-05 Koninklijke Philips Electronics N.V. Thermo-magneto-optical recording device and recording element therefor
US4493887A (en) * 1982-11-05 1985-01-15 U.S. Philips Corporation Optical recording element
US4670323A (en) * 1983-11-26 1987-06-02 Ricoh Company, Ltd. Magneto-optic recording medium having a metal oxide recording layer
US4670322A (en) * 1983-12-05 1987-06-02 Ricoh Company, Ltd. Metal oxide magnetic substance and a magnetic film consisting thereof and their uses
US4788095A (en) * 1984-02-06 1988-11-29 Ricoh Company, Ltd. Metal oxide magnetic substance and a magnetic film consisting thereof and their uses
EP0492880A3 (en) * 1990-12-24 1993-03-10 General Electric Company Method of preparing metal oxide films

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63290465A (en) * 1987-05-22 1988-11-28 Matsushita Graphic Commun Syst Inc Picture reader
JPH0246705A (en) * 1988-08-09 1990-02-16 Asahi Chem Ind Co Ltd Cobalt ferrite magnetic thin film
JP4560619B2 (en) * 2003-03-26 2010-10-13 独立行政法人産業技術総合研究所 Permanent magnet membrane
JP2010083700A (en) * 2008-09-30 2010-04-15 Dainippon Printing Co Ltd Layered body having cobalt oxide film

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1010205B (en) * 1952-09-22 1957-06-13 Siemens Ag Manufacture of ferromagnetic sintered ferrite bodies
DE1017298B (en) * 1953-03-06 1957-10-10 Siemens Ag Process for the production of a ferromagnetic, electrically non-conductive layer on carrier pads
DE1091025B (en) * 1959-08-29 1960-10-13 Werk Fuer Bauelemente Der Nach Process for the production of ferrite components
BE644605A (en) * 1963-03-06 1964-07-01
US3404026A (en) * 1965-04-06 1968-10-01 Army Usa Method of forming magnetic ferrite films
DE1917644A1 (en) * 1968-01-06 1970-09-10 Stamicarbon Process for the production of plates, tapes or molded bodies containing permanently magnetizable particles for the magnetic storage of information
GB1396124A (en) * 1971-06-25 1975-06-04 Kyoto Ceramic Magnetic memory structures

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2533731A1 (en) * 1982-09-27 1984-03-30 Philips Nv THERMOMAGNETO-OPTICAL MEMORY DEVICE AND ITS RECORDING MEDIUM
US4493887A (en) * 1982-11-05 1985-01-15 U.S. Philips Corporation Optical recording element
EP0127243A1 (en) * 1983-05-31 1984-12-05 Koninklijke Philips Electronics N.V. Thermo-magneto-optical recording device and recording element therefor
US4670323A (en) * 1983-11-26 1987-06-02 Ricoh Company, Ltd. Magneto-optic recording medium having a metal oxide recording layer
US4670322A (en) * 1983-12-05 1987-06-02 Ricoh Company, Ltd. Metal oxide magnetic substance and a magnetic film consisting thereof and their uses
US4788095A (en) * 1984-02-06 1988-11-29 Ricoh Company, Ltd. Metal oxide magnetic substance and a magnetic film consisting thereof and their uses
EP0492880A3 (en) * 1990-12-24 1993-03-10 General Electric Company Method of preparing metal oxide films

Also Published As

Publication number Publication date
JPS5435900A (en) 1979-03-16
CA1143258A (en) 1983-03-22
FR2400493A1 (en) 1979-03-16
DE2835203C2 (en) 1988-03-10
NL7708959A (en) 1979-02-19
AU3884578A (en) 1980-02-14
AU521775B2 (en) 1982-04-29
GB2002338B (en) 1982-04-15
FR2400493B1 (en) 1983-02-25
JPS62848B2 (en) 1987-01-09
DE2835203A1 (en) 1979-02-22

Similar Documents

Publication Publication Date Title
GB2049484B (en) Ceramic coating of metal substrate
GB2002338A (en) Method of forming a magneto- optical polycrystalline cobalt ferrite layer on a substrate.
DE3060787D1 (en) Method of depositing metal on metal patterns on dielectric substrates
IL52505A0 (en) A process for the stabilization of coatings of metal oxide particles on substrates
JPS52115785A (en) Process for coating substrate
AU3034777A (en) Coating a metal substrate by electromagnetic induction
JPS5419459A (en) Method of making powder material for forming protective coating on substrate
AU512489B2 (en) High &#34;Q&#34; inductor for use ina high frequency circuit
JPS52105526A (en) Treatment of cobalt base heat-resisting alloy
DE2963857D1 (en) Apparatus for depositing a film of metal oxides on the surface of flat glass
JPS5250327A (en) Method for forming protective coating layer
JPS5565363A (en) Preparation of ferrite single phase coating
JPS52105947A (en) Method of spraying highly viscous liquid and spray gun
JPS52126431A (en) Coating composition and method of coating the same
JPS5349271A (en) Method of coating antioxidant on printed substrate
ES8402881A1 (en) Selectively absorbent layer for solar collectors, and method of making it
JPS52152936A (en) Coating compounds for coating inner surfaces of metal cans
JPS53132799A (en) Manufacture of strong magnetic powder
JPS5278239A (en) Method of manufacturing adhesive tape
GB2002743A (en) Minimising oxide formation on hot-rolled material
JPS5350981A (en) Photo mask collection method
JPS5258899A (en) Production of dielectric thin film
JPS53144480A (en) Self-purifying coating layer
JPS51119042A (en) A composition suitable for use in powder coating
JPS53119986A (en) Decorative material

Legal Events

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