NL187804C - Werkwijze ter bereiding van een fosfor en kobalt bevattend magnetisch ijzeroxydepoeder, alsmede magnetisch registratiemedium voorzien van een bekleding, die magnetisch ijzeroxydepoeder bevat, dat verkregen is volgens deze werkwijze. - Google Patents

Werkwijze ter bereiding van een fosfor en kobalt bevattend magnetisch ijzeroxydepoeder, alsmede magnetisch registratiemedium voorzien van een bekleding, die magnetisch ijzeroxydepoeder bevat, dat verkregen is volgens deze werkwijze.

Info

Publication number
NL187804C
NL187804C NLAANVRAGE8204988,A NL8204988A NL187804C NL 187804 C NL187804 C NL 187804C NL 8204988 A NL8204988 A NL 8204988A NL 187804 C NL187804 C NL 187804C
Authority
NL
Netherlands
Prior art keywords
iron oxide
oxide powder
magnetic iron
phosphorus
preparing
Prior art date
Application number
NLAANVRAGE8204988,A
Other languages
English (en)
Dutch (nl)
Other versions
NL8204988A (nl
NL187804B (nl
Original Assignee
Ishihara Sangyo Kaisha
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
Priority claimed from JP56211477A external-priority patent/JPS58115030A/ja
Priority claimed from JP57148966A external-priority patent/JPS5939729A/ja
Priority claimed from JP57148965A external-priority patent/JPS5939728A/ja
Application filed by Ishihara Sangyo Kaisha filed Critical Ishihara Sangyo Kaisha
Publication of NL8204988A publication Critical patent/NL8204988A/nl
Publication of NL187804B publication Critical patent/NL187804B/xx
Application granted granted Critical
Publication of NL187804C publication Critical patent/NL187804C/xx

Links

Classifications

    • 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
    • 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
    • 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
    • G11B5/70678—Ferrites
    • G11B5/70684—Ferro-ferrioxydes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Hard Magnetic Materials (AREA)
  • Compounds Of Iron (AREA)
NLAANVRAGE8204988,A 1981-12-25 1982-12-24 Werkwijze ter bereiding van een fosfor en kobalt bevattend magnetisch ijzeroxydepoeder, alsmede magnetisch registratiemedium voorzien van een bekleding, die magnetisch ijzeroxydepoeder bevat, dat verkregen is volgens deze werkwijze. NL187804C (nl)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP21147781 1981-12-25
JP56211477A JPS58115030A (ja) 1981-12-25 1981-12-25 コバルト含有磁性酸化鉄粉末の製造方法
JP14896682 1982-08-27
JP57148966A JPS5939729A (ja) 1982-08-27 1982-08-27 コバルト含有磁性酸化鉄粉末の製造方法
JP14896582 1982-08-27
JP57148965A JPS5939728A (ja) 1982-08-27 1982-08-27 コバルト含有磁性酸化鉄粉末の製造方法

Publications (3)

Publication Number Publication Date
NL8204988A NL8204988A (nl) 1983-07-18
NL187804B NL187804B (nl) 1991-08-16
NL187804C true NL187804C (nl) 1992-01-16

Family

ID=27319656

Family Applications (1)

Application Number Title Priority Date Filing Date
NLAANVRAGE8204988,A NL187804C (nl) 1981-12-25 1982-12-24 Werkwijze ter bereiding van een fosfor en kobalt bevattend magnetisch ijzeroxydepoeder, alsmede magnetisch registratiemedium voorzien van een bekleding, die magnetisch ijzeroxydepoeder bevat, dat verkregen is volgens deze werkwijze.

Country Status (8)

Country Link
US (1) US4486467A (ko)
KR (1) KR870001378B1 (ko)
AU (1) AU555302B2 (ko)
CA (1) CA1181234A (ko)
DE (1) DE3247835A1 (ko)
FR (1) FR2519183B1 (ko)
GB (1) GB2118532B (ko)
NL (1) NL187804C (ko)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3516885A1 (de) * 1985-05-10 1986-11-13 Basf Ag, 6700 Ludwigshafen Verfahren zur herstellung nadelfoermiger, kobalthaltiger ferrimagnetischer eisenoxide
CN102528027B (zh) * 2012-02-24 2013-06-26 哈尔滨工业大学 一种金壳磁性椭球的制备方法

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE150191C (ko) *
DE2243231C2 (de) * 1972-09-01 1982-01-28 Basf Ag, 6700 Ludwigshafen Verfahren zur Herstellung von Cobalt-dotiertem γ-Eisen(III)oxid
US4064292A (en) * 1972-09-01 1977-12-20 Badische Anilin- & Soda-Fabrik, Aktiengesellschaft Manufacture of cobalt-modified γ-iron(III)oxides
DE2254810C2 (de) * 1972-11-09 1985-12-12 Basf Ag, 6700 Ludwigshafen Verfahren zur Verbesserung der magnetischen Eigenschaften von Gamma-Eisen (III)oxiden
JPS5522003B2 (ko) * 1975-01-28 1980-06-13
JPS52135897A (en) * 1976-05-09 1977-11-14 Toda Kogyo Corp Process for preparing cobaltt modified acicular crystal magnetic ironoxide particle
JPS52135896A (en) * 1976-05-09 1977-11-14 Toda Kogyo Corp Process for preparing cobaltt modified acicular crystal magnetic ironoxide particle
JPS52135895A (en) * 1976-05-09 1977-11-14 Toda Kogyo Corp Process for preparing cobaltt modified acicular crystal magnetic ironoxide particle
DE2905352A1 (de) * 1979-02-13 1980-08-21 Basf Ag Verfahren zur herstellung von nadelfoermigem kobalthaltigem magnetischem eisenoxid
JPS6029646B2 (ja) * 1981-01-20 1985-07-11 堺化学工業株式会社 磁性酸化鉄粉末の製造方法
AU548794B2 (en) * 1981-07-28 1986-01-02 Ishihara Sangyo Kaisha Ltd. Process for producing cobalt containing ferromagnetic iron oxides

Also Published As

Publication number Publication date
CA1181234A (en) 1985-01-22
KR840002741A (ko) 1984-07-16
AU9143582A (en) 1983-06-30
US4486467A (en) 1984-12-04
KR870001378B1 (ko) 1987-07-24
AU555302B2 (en) 1986-09-18
DE3247835C2 (ko) 1989-03-09
GB2118532B (en) 1985-06-05
FR2519183A1 (fr) 1983-07-01
NL8204988A (nl) 1983-07-18
DE3247835A1 (de) 1983-07-14
FR2519183B1 (fr) 1986-01-03
NL187804B (nl) 1991-08-16
GB2118532A (en) 1983-11-02

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Legal Events

Date Code Title Description
A85 Still pending on 85-01-01
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
V1 Lapsed because of non-payment of the annual fee

Effective date: 19960701