NL7406765A - - Google Patents

Info

Publication number
NL7406765A
NL7406765A NL7406765A NL7406765A NL7406765A NL 7406765 A NL7406765 A NL 7406765A NL 7406765 A NL7406765 A NL 7406765A NL 7406765 A NL7406765 A NL 7406765A NL 7406765 A NL7406765 A NL 7406765A
Authority
NL
Netherlands
Application number
NL7406765A
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 NL7406765A publication Critical patent/NL7406765A/xx

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)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Hard Magnetic Materials (AREA)
NL7406765A 1973-05-22 1974-05-20 NL7406765A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19732325925 DE2325925A1 (de) 1973-05-22 1973-05-22 Verfahren zur herstellung von nadelfoermigen kobalthaltigen ferrimagnetischen eisenoxiden

Publications (1)

Publication Number Publication Date
NL7406765A true NL7406765A (fr) 1974-11-26

Family

ID=5881735

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7406765A NL7406765A (fr) 1973-05-22 1974-05-20

Country Status (7)

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

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2705967C2 (de) * 1977-02-12 1990-01-04 Basf Ag, 6700 Ludwigshafen Verfahren zur Herstellung von nadelförmigem kobalthaltigem magnetischem Eisenoxid
DE2916403A1 (de) 1979-04-23 1980-11-06 Basf Ag Nadelfoermiges magnetisches eisenoxid und verfahren zu seiner herstellung
JPS5819733A (ja) * 1981-07-28 1983-02-04 Toshiba Corp 磁気記録媒体及びその製造方法
SE441683B (sv) 1983-03-18 1985-10-28 Adcon Ab Forfarande vid fergbehandling av textila material samt anvendning av en anordning for genomforande av forfarandet
DE3345531A1 (de) * 1983-12-16 1985-06-27 Basf Ag, 6700 Ludwigshafen Verfahren zur herstellung kobalthaltiger, isotroper magnetischer eisenoxide
DE3345532A1 (de) * 1983-12-16 1985-06-27 Basf Ag, 6700 Ludwigshafen Verfahren zur herstellung kobalthaltiger, isotroper magnetischer eisenoxide
DE3435698A1 (de) * 1984-09-28 1986-04-03 Basf Ag, 6700 Ludwigshafen Verfahren zur herstellung von feinteiligem isotropen ferritpulver mit spinellstruktur

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1592398A1 (de) * 1967-02-08 1970-12-17 Bayer Ag Verwendung von hochkoerzitivem nadelfoermigem gamma-Fe2O3 zur Herstellung von Magnetogrammtraegern
DE2100390A1 (de) * 1970-03-11 1971-09-30 Ampex Verfahren zur Herstellung von nadel förmigen, metallhaltigen gamma Eisen III Oxid Teilchen

Also Published As

Publication number Publication date
DE2325925A1 (de) 1974-12-12
IT1011466B (it) 1977-01-20
BE815266A (fr) 1974-11-20
FR2230590B1 (fr) 1978-01-27
FR2230590A1 (fr) 1974-12-20
GB1458623A (en) 1976-12-15
JPS5019699A (fr) 1975-03-01

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Legal Events

Date Code Title Description
BA A request for search or an international-type search has been filed
BB A search report has been drawn up
BC A request for examination has been filed
BV The patent application has lapsed