CH605414A5 - - Google Patents

Info

Publication number
CH605414A5
CH605414A5 CH584275A CH584275A CH605414A5 CH 605414 A5 CH605414 A5 CH 605414A5 CH 584275 A CH584275 A CH 584275A CH 584275 A CH584275 A CH 584275A CH 605414 A5 CH605414 A5 CH 605414A5
Authority
CH
Switzerland
Application number
CH584275A
Inventor
Leonard Muhlenberg Bennetch
Original Assignee
Pfizer
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 Pfizer filed Critical Pfizer
Publication of CH605414A5 publication Critical patent/CH605414A5/xx

Links

Classifications

    • 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
    • G11B5/70652—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 gamma - Fe2 O3
    • G11B5/70668—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 gamma - Fe2 O3 containing a dopant
    • G11B5/70673—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 gamma - Fe2 O3 containing a dopant containing Co
    • 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
    • C01G49/06—Ferric oxide [Fe2O3]
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2002/00—Crystal-structural characteristics
    • C01P2002/50—Solid solutions
    • C01P2002/52—Solid solutions containing elements as dopants
    • C01P2002/54—Solid solutions containing elements as dopants one element only
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/10—Particle morphology extending in one dimension, e.g. needle-like
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/80—Particles consisting of a mixture of two or more inorganic phases
    • C01P2004/82—Particles consisting of a mixture of two or more inorganic phases two phases having the same anion, e.g. both oxidic phases
    • C01P2004/84—Particles consisting of a mixture of two or more inorganic phases two phases having the same anion, e.g. both oxidic phases one phase coated with the other
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/42—Magnetic properties

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Hard Magnetic Materials (AREA)
  • Compounds Of Iron (AREA)
  • Paints Or Removers (AREA)
CH584275A 1974-05-06 1975-05-06 CH605414A5 (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US46745974A 1974-05-06 1974-05-06

Publications (1)

Publication Number Publication Date
CH605414A5 true CH605414A5 (sv) 1978-09-29

Family

ID=23855785

Family Applications (1)

Application Number Title Priority Date Filing Date
CH584275A CH605414A5 (sv) 1974-05-06 1975-05-06

Country Status (6)

Country Link
JP (1) JPS537320B2 (sv)
CH (1) CH605414A5 (sv)
DE (1) DE2520379C3 (sv)
GB (1) GB1482157A (sv)
NL (1) NL166244C (sv)
SE (1) SE7505137L (sv)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5942441B2 (ja) * 1974-08-08 1984-10-15 富士写真フイルム株式会社 磁性酸化鉄の製法
JPS5850005B2 (ja) * 1974-08-20 1983-11-08 日立マクセル株式会社 ジキキロクヨウジセイフンマツノ セイゾウホウ
DE2556406A1 (de) * 1975-12-15 1977-06-16 Bayer Ag Verfahren zur kontinuierlichen herstellung von eisenoxidhydroxid
DE2705967C2 (de) * 1977-02-12 1990-01-04 Basf Ag, 6700 Ludwigshafen Verfahren zur Herstellung von nadelförmigem kobalthaltigem magnetischem Eisenoxid
DE2801395C2 (de) * 1978-01-13 1982-04-22 Bayer Ag, 5090 Leverkusen Thermisch stabilisiertes ferrimagnetisches Eisenoxid
JPS5852806A (ja) * 1981-09-24 1983-03-29 Hitachi Maxell Ltd 磁気記録媒体

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1226997B (de) * 1959-06-12 1966-10-20 Bayer Ag Verfahren zur Herstellung von nadelfoermigem, cobalthaltigem gamma-Eisen(III)-oxid
US3573980A (en) * 1968-02-19 1971-04-06 Minnesota Mining & Mfg Method of making magnetic particles and recording tape
JPS4810994B1 (sv) * 1969-07-26 1973-04-09
JPS4854497A (sv) * 1971-11-10 1973-07-31

Also Published As

Publication number Publication date
GB1482157A (en) 1977-08-10
JPS50154198A (sv) 1975-12-11
SE7505137L (sv) 1975-11-07
NL166244B (nl) 1981-02-16
NL166244C (nl) 1981-07-15
DE2520379B2 (de) 1980-09-25
JPS537320B2 (sv) 1978-03-16
NL7505145A (nl) 1975-11-10
DE2520379C3 (de) 1981-11-19
DE2520379A1 (de) 1975-11-13

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Legal Events

Date Code Title Description
PUE Assignment

Owner name: PFIZER PIGMENTS INC.

PUE Assignment

Owner name: ISK MAGNETICS, INC.

PL Patent ceased