DD91017A - - Google Patents

Info

Publication number
DD91017A
DD91017A DD91017DA DD91017A DD 91017 A DD91017 A DD 91017A DD 91017D A DD91017D A DD 91017DA DD 91017 A DD91017 A DD 91017A
Authority
DD
German Democratic Republic
Application number
Publication of DD91017A publication Critical patent/DD91017A/xx

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G49/00—Compounds of iron
    • C01G49/02—Oxides; Hydroxides
    • C01G49/08—Ferroso-ferric oxide [Fe3O4]
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
    • G11B5/706—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material
    • G11B5/70626—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances
    • G11B5/70642—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances iron oxides
    • G11B5/70678—Ferrites
    • G11B5/70684—Ferro-ferrioxydes
    • G11B5/70689—Magnetite

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
DD91017D DD91017A (en)

Publications (1)

Publication Number Publication Date
DD91017A true DD91017A (en)

Family

ID=274364

Family Applications (1)

Application Number Title Priority Date Filing Date
DD91017D DD91017A (en)

Country Status (1)

Country Link
DD (1) DD91017A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2403366A1 (en) * 1973-01-24 1974-07-25 Sony Corp METHOD FOR MANUFACTURING MAGNETIC METAL PARTICLES
FR2344107A1 (en) * 1976-03-12 1977-10-07 Kodak Pathe ACICULAR FERRIC OXIDE FOR MAGNETIC RECORDING AND PROCESS FOR ITS MANUFACTURING
EP0014302A1 (en) * 1979-02-03 1980-08-20 BASF Aktiengesellschaft Process for producing needle-shaped highly coercive gamma-iron(III) oxide

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2403366A1 (en) * 1973-01-24 1974-07-25 Sony Corp METHOD FOR MANUFACTURING MAGNETIC METAL PARTICLES
FR2344107A1 (en) * 1976-03-12 1977-10-07 Kodak Pathe ACICULAR FERRIC OXIDE FOR MAGNETIC RECORDING AND PROCESS FOR ITS MANUFACTURING
EP0014302A1 (en) * 1979-02-03 1980-08-20 BASF Aktiengesellschaft Process for producing needle-shaped highly coercive gamma-iron(III) oxide

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