FR1407333A - Modified ferromagnetic chromium dioxide - Google Patents

Modified ferromagnetic chromium dioxide

Info

Publication number
FR1407333A
FR1407333A FR982724A FR982724A FR1407333A FR 1407333 A FR1407333 A FR 1407333A FR 982724 A FR982724 A FR 982724A FR 982724 A FR982724 A FR 982724A FR 1407333 A FR1407333 A FR 1407333A
Authority
FR
France
Prior art keywords
chromium dioxide
ferromagnetic chromium
modified ferromagnetic
modified
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
FR982724A
Other languages
French (fr)
Inventor
Franz Hund
Wilhelm Abeck
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.)
Bayer AG
Original Assignee
Bayer AG
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 Bayer AG filed Critical Bayer AG
Priority to FR982724A priority Critical patent/FR1407333A/en
Application granted granted Critical
Publication of FR1407333A publication Critical patent/FR1407333A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/0302—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity characterised by unspecified or heterogeneous hardness or specially adapted for magnetic hardness transitions
    • H01F1/0311—Compounds
    • 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
    • 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
    • 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)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Inorganic Chemistry (AREA)
FR982724A 1963-07-24 1964-07-23 Modified ferromagnetic chromium dioxide Expired FR1407333A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR982724A FR1407333A (en) 1963-07-24 1964-07-23 Modified ferromagnetic chromium dioxide

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEF0040333 1963-07-24
FR982724A FR1407333A (en) 1963-07-24 1964-07-23 Modified ferromagnetic chromium dioxide

Publications (1)

Publication Number Publication Date
FR1407333A true FR1407333A (en) 1965-07-30

Family

ID=25975856

Family Applications (1)

Application Number Title Priority Date Filing Date
FR982724A Expired FR1407333A (en) 1963-07-24 1964-07-23 Modified ferromagnetic chromium dioxide

Country Status (1)

Country Link
FR (1) FR1407333A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3486851A (en) * 1967-03-01 1969-12-30 Du Pont Formation of ferromagnetic cro2 by decomposition of higher valent chromium oxides
FR2050481A1 (en) * 1969-07-03 1971-04-02 Montedison Spa Ferromagnetic chromium dioxide prepn
DE1905584C3 (en) * 1968-02-13 1971-06-24 Du Pont Process for improving the ferromagnetic properties of chromium dioxide
EP0007764A1 (en) * 1978-07-21 1980-02-06 Montedison S.p.A. Stabilized ferromagnetic chromium dioxide and a process for preparing it

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3486851A (en) * 1967-03-01 1969-12-30 Du Pont Formation of ferromagnetic cro2 by decomposition of higher valent chromium oxides
DE1905584C3 (en) * 1968-02-13 1971-06-24 Du Pont Process for improving the ferromagnetic properties of chromium dioxide
FR2050481A1 (en) * 1969-07-03 1971-04-02 Montedison Spa Ferromagnetic chromium dioxide prepn
EP0007764A1 (en) * 1978-07-21 1980-02-06 Montedison S.p.A. Stabilized ferromagnetic chromium dioxide and a process for preparing it

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