JPS5019699A - - Google Patents

Info

Publication number
JPS5019699A
JPS5019699A JP49055681A JP5568174A JPS5019699A JP S5019699 A JPS5019699 A JP S5019699A JP 49055681 A JP49055681 A JP 49055681A JP 5568174 A JP5568174 A JP 5568174A JP S5019699 A JPS5019699 A JP S5019699A
Authority
JP
Japan
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
JP49055681A
Other languages
Japanese (ja)
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 filed Critical
Publication of JPS5019699A publication Critical patent/JPS5019699A/ja
Pending legal-status Critical Current

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
JP49055681A 1973-05-22 1974-05-20 Pending JPS5019699A (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
JPS5019699A true JPS5019699A (en) 1975-03-01

Family

ID=5881735

Family Applications (1)

Application Number Title Priority Date Filing Date
JP49055681A Pending JPS5019699A (en) 1973-05-22 1974-05-20

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
DE2325925A1 (en) 1974-12-12
GB1458623A (en) 1976-12-15
IT1011466B (en) 1977-01-20
NL7406765A (en) 1974-11-26
FR2230590A1 (en) 1974-12-20
BE815266A (en) 1974-11-20
FR2230590B1 (en) 1978-01-27

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