DE1138750B - Verfahren zur Herstellung magnetisierbarer Eisenoxyde - Google Patents

Verfahren zur Herstellung magnetisierbarer Eisenoxyde

Info

Publication number
DE1138750B
DE1138750B DEB3948A DEB0003948A DE1138750B DE 1138750 B DE1138750 B DE 1138750B DE B3948 A DEB3948 A DE B3948A DE B0003948 A DEB0003948 A DE B0003948A DE 1138750 B DE1138750 B DE 1138750B
Authority
DE
Germany
Prior art keywords
ferric oxide
production
iron oxides
magnetizable iron
magnetizable
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.)
Granted
Application number
DEB3948A
Other languages
German (de)
English (en)
Other versions
DE1138750C2 (OSRAM
Inventor
Dr Friedrich Bergmann
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.)
BASF SE
Original Assignee
BASF SE
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 BASF SE filed Critical BASF SE
Priority to DEB3948A priority Critical patent/DE1138750B/de
Publication of DE1138750B publication Critical patent/DE1138750B/de
Application granted granted Critical
Publication of DE1138750C2 publication Critical patent/DE1138750C2/de
Granted 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
    • G11B5/70642—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
    • 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]
    • 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
    • G11B5/70647—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 with a skin
    • 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)
  • Health & Medical Sciences (AREA)
  • Dermatology (AREA)
  • General Health & Medical Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Hard Magnetic Materials (AREA)
DEB3948A 1950-05-26 1950-05-26 Verfahren zur Herstellung magnetisierbarer Eisenoxyde Granted DE1138750B (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB3948A DE1138750B (de) 1950-05-26 1950-05-26 Verfahren zur Herstellung magnetisierbarer Eisenoxyde

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB3948A DE1138750B (de) 1950-05-26 1950-05-26 Verfahren zur Herstellung magnetisierbarer Eisenoxyde

Publications (2)

Publication Number Publication Date
DE1138750B true DE1138750B (de) 1962-10-31
DE1138750C2 DE1138750C2 (OSRAM) 1963-05-16

Family

ID=6953474

Family Applications (1)

Application Number Title Priority Date Filing Date
DEB3948A Granted DE1138750B (de) 1950-05-26 1950-05-26 Verfahren zur Herstellung magnetisierbarer Eisenoxyde

Country Status (1)

Country Link
DE (1) DE1138750B (OSRAM)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3974079A (en) * 1971-05-06 1976-08-10 Bayer Aktiengesellschaft Production of gamma iron oxide
US4213959A (en) * 1977-08-05 1980-07-22 Basf Aktiengesellschaft Manufacture of acicular, ferrimagnetic iron oxide

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3974079A (en) * 1971-05-06 1976-08-10 Bayer Aktiengesellschaft Production of gamma iron oxide
US4213959A (en) * 1977-08-05 1980-07-22 Basf Aktiengesellschaft Manufacture of acicular, ferrimagnetic iron oxide

Also Published As

Publication number Publication date
DE1138750C2 (OSRAM) 1963-05-16

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