CA957483A - Process for producing ferromagnetic chromium dioxide - Google Patents

Process for producing ferromagnetic chromium dioxide

Info

Publication number
CA957483A
CA957483A CA12970223-233A CA129702A CA957483A CA 957483 A CA957483 A CA 957483A CA 129702 A CA129702 A CA 129702A CA 957483 A CA957483 A CA 957483A
Authority
CA
Canada
Prior art keywords
chromium dioxide
ferromagnetic chromium
producing ferromagnetic
producing
dioxide
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
CA12970223-233A
Other languages
English (en)
Inventor
Mahito Shimizu
Goro Akashi
Tatsuji Kitamoto
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.)
Fujifilm Holdings Corp
Original Assignee
Fuji Photo Film Co Ltd
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 Fuji Photo Film Co Ltd filed Critical Fuji Photo Film Co Ltd
Application granted granted Critical
Publication of CA957483A publication Critical patent/CA957483A/en
Expired legal-status Critical Current

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
    • G11B5/70636—CrO2
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G37/00—Compounds of chromium
    • C01G37/02—Oxides or hydrates thereof
    • 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
    • C01P2006/32—Thermal properties
    • 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)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Magnetic Record Carriers (AREA)
CA12970223-233A 1970-12-14 1971-12-09 Process for producing ferromagnetic chromium dioxide Expired CA957483A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP45110489A JPS4828277B1 (OSRAM) 1970-12-14 1970-12-14

Publications (1)

Publication Number Publication Date
CA957483A true CA957483A (en) 1974-11-12

Family

ID=14537022

Family Applications (1)

Application Number Title Priority Date Filing Date
CA12970223-233A Expired CA957483A (en) 1970-12-14 1971-12-09 Process for producing ferromagnetic chromium dioxide

Country Status (5)

Country Link
US (1) US3787564A (OSRAM)
JP (1) JPS4828277B1 (OSRAM)
CA (1) CA957483A (OSRAM)
DE (1) DE2161660A1 (OSRAM)
GB (1) GB1378371A (OSRAM)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4045544A (en) * 1976-08-31 1977-08-30 E. I. Du Pont De Nemours And Company Process for the preparation of ferromagnetic chromium dioxide

Also Published As

Publication number Publication date
JPS4828277B1 (OSRAM) 1973-08-30
US3787564A (en) 1974-01-22
DE2161660A1 (de) 1972-06-22
GB1378371A (en) 1974-12-27

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