DE2343562C3 - Dotierte Ferro-Ferrioxid Teilchen - Google Patents

Dotierte Ferro-Ferrioxid Teilchen

Info

Publication number
DE2343562C3
DE2343562C3 DE2343562A DE2343562A DE2343562C3 DE 2343562 C3 DE2343562 C3 DE 2343562C3 DE 2343562 A DE2343562 A DE 2343562A DE 2343562 A DE2343562 A DE 2343562A DE 2343562 C3 DE2343562 C3 DE 2343562C3
Authority
DE
Germany
Prior art keywords
ferric oxide
doped
oxide particles
magnetic recording
ferrous
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.)
Expired
Application number
DE2343562A
Other languages
German (de)
English (en)
Other versions
DE2343562B2 (de
DE2343562A1 (de
Inventor
Bernard Jean Vincennes Pingaud (Frankreich)
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.)
Eastman Kodak Co
Original Assignee
Eastman Kodak Co
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 Eastman Kodak Co filed Critical Eastman Kodak Co
Publication of DE2343562A1 publication Critical patent/DE2343562A1/de
Publication of DE2343562B2 publication Critical patent/DE2343562B2/de
Application granted granted Critical
Publication of DE2343562C3 publication Critical patent/DE2343562C3/de
Expired 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
    • G11B5/70678—Ferrites
    • 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
    • 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
    • G11B5/70689—Magnetite

Landscapes

  • Hard Magnetic Materials (AREA)
  • Paints Or Removers (AREA)
  • Magnetic Record Carriers (AREA)
  • Compounds Of Iron (AREA)
DE2343562A 1972-09-13 1973-08-29 Dotierte Ferro-Ferrioxid Teilchen Expired DE2343562C3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7232367A FR2199155B1 (enExample) 1972-09-13 1972-09-13

Publications (3)

Publication Number Publication Date
DE2343562A1 DE2343562A1 (de) 1974-03-28
DE2343562B2 DE2343562B2 (de) 1978-02-02
DE2343562C3 true DE2343562C3 (de) 1978-09-28

Family

ID=9104193

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2343562A Expired DE2343562C3 (de) 1972-09-13 1973-08-29 Dotierte Ferro-Ferrioxid Teilchen

Country Status (9)

Country Link
JP (1) JPS5814047B2 (enExample)
BE (1) BE804829A (enExample)
CH (1) CH581075A5 (enExample)
DD (1) DD105920A5 (enExample)
DE (1) DE2343562C3 (enExample)
FR (1) FR2199155B1 (enExample)
GB (1) GB1436140A (enExample)
IT (1) IT995315B (enExample)
NL (1) NL7312614A (enExample)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2801452C2 (de) * 1978-01-13 1985-03-28 Agfa-Gevaert Ag, 5090 Leverkusen Magnetisches Aufzeichnungsmaterial
US4778719A (en) * 1986-08-25 1988-10-18 Eastman Kodak Company Particulate magnetic recording media and method of manufacture thereof

Also Published As

Publication number Publication date
BE804829A (fr) 1974-03-13
DD105920A5 (enExample) 1974-05-12
JPS5814047B2 (ja) 1983-03-17
DE2343562B2 (de) 1978-02-02
GB1436140A (en) 1976-05-19
CH581075A5 (enExample) 1976-10-29
DE2343562A1 (de) 1974-03-28
JPS4969104A (enExample) 1974-07-04
FR2199155A1 (enExample) 1974-04-05
FR2199155B1 (enExample) 1978-04-28
IT995315B (it) 1975-11-10
NL7312614A (enExample) 1974-03-15

Similar Documents

Publication Publication Date Title
DE69526313T2 (de) Magnetische, spindelförmige Legierungsteilchen mit Kobalt und Eisen als Hauptbestandteilen sowie Verfahren zu deren Herstellung
EP0014902B1 (de) Verfahren zur Herstellung von nadelförmigem kobalthaltigem magnetischem Eisenoxid
DE2254810C2 (de) Verfahren zur Verbesserung der magnetischen Eigenschaften von Gamma-Eisen (III)oxiden
DE2130921B2 (de) Verfahren zur Herstellung von Pulver aus Eisen und/oder Kobalt und/oder
DE2243231C2 (de) Verfahren zur Herstellung von Cobalt-dotiertem γ-Eisen(III)oxid
DE2202853A1 (de) Verfahren zur herstellung von feinteiligen, nadelfoermigen, magnetischen eisenoxiden
EP0014363B1 (de) Kobalt-dotierte ferrimagnetische Eisenoxide und Verfahren zu deren Herstellung
EP0014903B1 (de) Verfahren zur Herstellung von nadelförmigem kobalthaltigem magnetischem Eisenoxid
EP0018009A1 (de) Modifitiertes nadelförmiges magnetisches Eisenoxid und Verfahren zu seiner Herstellung sowie dessen Verwendung zur Herstellung von magnetischen Aufzeichnungsträgern
DE2036612C2 (de) Verfahren zur Herstellung eines nadelförmigen, mit Kobalt modifizierten Maghemitpulvers
DE2235383B2 (de) Ferromagnetische nadeiförmige Teilchen für ein Aufzeichnungssystem
DE2305153A1 (de) Verfahren zur herstellung eines nadelfoermigen magnetischen puders fuer die herstellung von magnetbaendern
DE3784330T2 (de) Plattenfoermige magnetoplumbit ferritpartikel fuer magnetische aufnahme und magnetischer aufnahmetraeger unter zuhilfenahme ebensolcher.
DE2428875C2 (de) Verfahren zur Herstellung von γ-Eisen(III)oxid
DE3235425C2 (de) Magnetisches Aufzeichnungsmedium und Verfahren zu seiner Herstellung
DE2343562C3 (de) Dotierte Ferro-Ferrioxid Teilchen
DE2550225C3 (de) Verfahren zur Herstellung von nadeiförmigem Y-Eisen(IID-oxid
DE2550308C3 (de) Verfahren zur Herstellung von nadeiförmigem a-Eisen(III)-Oxidhydrat
DE2943017A1 (de) Verbessertes, mit kobalt modifiziertes magnetisches eisenoxid
EP0198110A2 (de) Verfahren zur Herstellung von ferromagnetischem Chromdioxid
DE2045561C3 (de) Verfahren zur Herstellung feiner Goethitkristalle
DE2550307C3 (de) Verfahren zur Herstellung von nadeiförmigem Y-Eisen(ni)-Oxid
DE2144553C2 (de) Kristallines γ-Eisen (III)oxid, Verfahren zu dessen Herstellung sowie Verwendung desselben
DE3787317T2 (de) Magnetischer Aufzeichnungsträger und Herstellung desselben.
DE2308791B2 (de) Verfahren zum herstellen eines magnetischen materials in pulverform

Legal Events

Date Code Title Description
C3 Grant after two publication steps (3rd publication)
8339 Ceased/non-payment of the annual fee