DE2130547A1 - Verfahren zur Herstellung von ferromagnetischem Chromdioxid - Google Patents

Verfahren zur Herstellung von ferromagnetischem Chromdioxid

Info

Publication number
DE2130547A1
DE2130547A1 DE19712130547 DE2130547A DE2130547A1 DE 2130547 A1 DE2130547 A1 DE 2130547A1 DE 19712130547 DE19712130547 DE 19712130547 DE 2130547 A DE2130547 A DE 2130547A DE 2130547 A1 DE2130547 A1 DE 2130547A1
Authority
DE
Germany
Prior art keywords
chromium
temperature
pressure
atmospheres
autoclave
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.)
Pending
Application number
DE19712130547
Other languages
German (de)
English (en)
Inventor
Giampiero Basile
Ugo Montiglio
Domenico Morero
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.)
Montedison SpA
Original Assignee
Montedison SpA
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 Montedison SpA filed Critical Montedison SpA
Publication of DE2130547A1 publication Critical patent/DE2130547A1/de
Pending 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
    • 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
    • C01P2004/54—Particles characterised by their aspect ratio, i.e. the ratio of sizes in the longest to the shortest dimension
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
    • 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)
  • Magnetic Record Carriers (AREA)
  • Powder Metallurgy (AREA)
  • Soft Magnetic Materials (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
DE19712130547 1970-06-23 1971-06-19 Verfahren zur Herstellung von ferromagnetischem Chromdioxid Pending DE2130547A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2641270 1970-06-23

Publications (1)

Publication Number Publication Date
DE2130547A1 true DE2130547A1 (de) 1971-12-30

Family

ID=11219419

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19712130547 Pending DE2130547A1 (de) 1970-06-23 1971-06-19 Verfahren zur Herstellung von ferromagnetischem Chromdioxid

Country Status (8)

Country Link
BE (1) BE768910A (cs)
CA (1) CA947041A (cs)
DE (1) DE2130547A1 (cs)
ES (1) ES392394A1 (cs)
FR (1) FR2096427B1 (cs)
GB (1) GB1343622A (cs)
NL (1) NL7108266A (cs)
SE (1) SE369184B (cs)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1534634A2 (en) * 2002-08-29 2005-06-01 Tata Institute of Fundamental Research Chromium dioxide (cro sb 2 /sb ) and composites of chromium dioxide and other oxides of chromium such as cro sb 2 /sb /cr sb 2 /sb o sb 3 /sb and cro sb 2 /sb /cr sb 2 /sb o sb 5 /sb and process for manufacturing the same

Also Published As

Publication number Publication date
GB1343622A (en) 1974-01-16
ES392394A1 (es) 1973-08-01
SE369184B (cs) 1974-08-12
NL7108266A (cs) 1971-12-27
CA947041A (en) 1974-05-14
FR2096427A1 (cs) 1972-02-18
BE768910A (fr) 1971-12-23
FR2096427B1 (cs) 1974-03-08

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