IT1011466B - PROCEDURE FOR PRODUCING FERROMAGNETIC AGH-SHAPED IRON OXIDES CONTAINING COBALT - Google Patents

PROCEDURE FOR PRODUCING FERROMAGNETIC AGH-SHAPED IRON OXIDES CONTAINING COBALT

Info

Publication number
IT1011466B
IT1011466B IT5110474A IT5110474A IT1011466B IT 1011466 B IT1011466 B IT 1011466B IT 5110474 A IT5110474 A IT 5110474A IT 5110474 A IT5110474 A IT 5110474A IT 1011466 B IT1011466 B IT 1011466B
Authority
IT
Italy
Prior art keywords
agh
procedure
iron oxides
shaped iron
containing cobalt
Prior art date
Application number
IT5110474A
Other languages
Italian (it)
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
Application granted granted Critical
Publication of IT1011466B publication Critical patent/IT1011466B/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/22—Compounds of iron
    • C09C1/24—Oxides of iron
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Compounds Of Iron (AREA)
  • Hard Magnetic Materials (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
IT5110474A 1973-05-22 1974-05-20 PROCEDURE FOR PRODUCING FERROMAGNETIC AGH-SHAPED IRON OXIDES CONTAINING COBALT IT1011466B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19732325925 DE2325925A1 (en) 1973-05-22 1973-05-22 Process for the preparation of acicular cobalt-containing ferrimagnetic iron oxides

Publications (1)

Publication Number Publication Date
IT1011466B true IT1011466B (en) 1977-01-20

Family

ID=5881735

Family Applications (1)

Application Number Title Priority Date Filing Date
IT5110474A IT1011466B (en) 1973-05-22 1974-05-20 PROCEDURE FOR PRODUCING FERROMAGNETIC AGH-SHAPED IRON OXIDES CONTAINING COBALT

Country Status (7)

Country Link
JP (1) JPS5019699A (en)
BE (1) BE815266A (en)
DE (1) DE2325925A1 (en)
FR (1) FR2230590B1 (en)
GB (1) GB1458623A (en)
IT (1) IT1011466B (en)
NL (1) NL7406765A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2705967C2 (en) * 1977-02-12 1990-01-04 Basf Ag, 6700 Ludwigshafen Process for the production of acicular cobalt-containing magnetic iron oxide
DE2916403A1 (en) 1979-04-23 1980-11-06 Basf Ag NEEDLE-SHAPED MAGNETIC IRON OXIDE AND METHOD FOR THE PRODUCTION THEREOF
JPS5819733A (en) * 1981-07-28 1983-02-04 Toshiba Corp Magnetic recording medium and its manufacture
SE441683B (en) 1983-03-18 1985-10-28 Adcon Ab PROCEDURE FOR THE PROCESSING OF TEXTILE MATERIALS AND USING A DEVICE FOR IMPLEMENTATION OF THE PROCEDURE
DE3345532A1 (en) * 1983-12-16 1985-06-27 Basf Ag, 6700 Ludwigshafen METHOD FOR PRODUCING COBALTIC, ISOTROPPER MAGNETIC IRON OXIDES
DE3345531A1 (en) * 1983-12-16 1985-06-27 Basf Ag, 6700 Ludwigshafen METHOD FOR PRODUCING COBALTIC, ISOTROPPER MAGNETIC IRON OXIDES
DE3435698A1 (en) * 1984-09-28 1986-04-03 Basf Ag, 6700 Ludwigshafen METHOD FOR PRODUCING FINE-PARTICLE ISOTROPIC FERRITE POWDER WITH SPINEL STRUCTURE

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1592398A1 (en) * 1967-02-08 1970-12-17 Bayer Ag Use of highly coercive needle-like gamma-Fe2O3 for the production of magnetogram carriers
DE2100390A1 (en) * 1970-03-11 1971-09-30 Ampex Doped acicular gamma ferric oxide preparation - tion

Also Published As

Publication number Publication date
NL7406765A (en) 1974-11-26
GB1458623A (en) 1976-12-15
FR2230590A1 (en) 1974-12-20
FR2230590B1 (en) 1978-01-27
JPS5019699A (en) 1975-03-01
DE2325925A1 (en) 1974-12-12
BE815266A (en) 1974-11-20

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