DE2064804A1 - High magnetic iron oxide prodn - Google Patents

High magnetic iron oxide prodn

Info

Publication number
DE2064804A1
DE2064804A1 DE19702064804 DE2064804A DE2064804A1 DE 2064804 A1 DE2064804 A1 DE 2064804A1 DE 19702064804 DE19702064804 DE 19702064804 DE 2064804 A DE2064804 A DE 2064804A DE 2064804 A1 DE2064804 A1 DE 2064804A1
Authority
DE
Germany
Prior art keywords
magnetic iron
iron oxide
magnetic
organic compound
magnetization
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.)
Pending
Application number
DE19702064804
Other languages
German (de)
English (en)
Inventor
Tetsuro Prof. Dr.; Ono Mataichi; Yonetsu Noboru; Suzuki Nobusuke; Kyoto Tanaka (Japan). P
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.)
HI CRYSTAL CO Ltd
Original Assignee
HI CRYSTAL CO Ltd
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 HI CRYSTAL CO Ltd filed Critical HI CRYSTAL CO Ltd
Publication of DE2064804A1 publication Critical patent/DE2064804A1/de
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62Record carriers characterised by the selection of the material
    • G11B5/68Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • G11B5/70Record 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
    • G11B5/706Record 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
    • G11B5/70626Record 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
    • G11B5/70642Record 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
    • G11B5/70678Ferrites
    • G11B5/70684Ferro-ferrioxydes
    • G11B5/70689Magnetite
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01GCOMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G49/00Compounds of iron
    • C01G49/02Oxides; Hydroxides
    • C01G49/08Ferroso-ferric oxide [Fe3O4]
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62Record carriers characterised by the selection of the material
    • G11B5/68Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • G11B5/70Record 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
    • G11B5/706Record 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
    • G11B5/70626Record 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
    • G11B5/70642Record 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
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62Record carriers characterised by the selection of the material
    • G11B5/68Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • G11B5/70Record 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
    • G11B5/706Record 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
    • G11B5/70626Record 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
    • G11B5/70642Record 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
    • G11B5/70647Record 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 with a skin
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62Record carriers characterised by the selection of the material
    • G11B5/68Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • G11B5/70Record 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
    • G11B5/706Record 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
    • G11B5/70626Record 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
    • G11B5/70642Record 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
    • G11B5/70652Record 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
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62Record carriers characterised by the selection of the material
    • G11B5/68Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • G11B5/70Record 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
    • G11B5/706Record 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
    • G11B5/70626Record 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
    • G11B5/70642Record 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
    • G11B5/70652Record 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
    • G11B5/70663Preparation processes specially adapted therefor, e.g. using stabilising agents
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00Particle morphology
    • C01P2004/01Particle morphology depicted by an image
    • C01P2004/03Particle morphology depicted by an image obtained by SEM
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00Particle morphology
    • C01P2004/10Particle morphology extending in one dimension, e.g. needle-like
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00Physical properties of inorganic compounds
    • C01P2006/42Magnetic properties

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Dermatology (AREA)
  • General Health & Medical Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Hard Magnetic Materials (AREA)
DE19702064804 1969-12-24 1970-12-22 High magnetic iron oxide prodn Pending DE2064804A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP10466569 1969-12-24
JP10466669 1969-12-24
JP10466769 1969-12-24
JP3254070 1970-04-15

Publications (1)

Publication Number Publication Date
DE2064804A1 true DE2064804A1 (en) 1971-09-23

Family

ID=27459636

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19702064804 Pending DE2064804A1 (en) 1969-12-24 1970-12-22 High magnetic iron oxide prodn

Country Status (2)

Country Link
DE (1) DE2064804A1 (enrdf_load_stackoverflow)
NL (1) NL7018467A (enrdf_load_stackoverflow)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2428875A1 (de) * 1974-06-14 1976-01-02 Basf Ag Verfahren zur herstellung von gammaeisen(iii)oxid
DE2447386A1 (de) * 1974-10-04 1976-04-22 Basf Ag Verfahren zur herstellung von gammaeisen(iii)-oxid
FR2359884A1 (fr) * 1976-07-27 1978-02-24 Bayer Ag Procede hydrothermique pour la production de pigments denses d'oxyde de fer
EP0001435A1 (de) * 1977-10-06 1979-04-18 BASF Aktiengesellschaft Verfahren zur Herstellung von agglomeratfreiem Gamma-Eisen(III)oxid
EP0014302A1 (de) * 1979-02-03 1980-08-20 BASF Aktiengesellschaft Verfahren zur Herstellung von hochkoerzitivem nadelförmigem Gamma-Eisen(III)oxid
EP0024693A3 (en) * 1979-09-01 1981-03-18 Basf Aktiengesellschaft Process for the preparation of acicular ferrimagnetic iron oxide, and its application
EP0078950A3 (en) * 1981-11-05 1983-09-07 Basf Aktiengesellschaft Process for the preparation of acicular, ferrimagnetic iron oxides
EP0097900A3 (en) * 1982-06-30 1986-02-19 Basf Aktiengesellschaft Process for the preparation of acicular ferromagnetic iron oxides

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2428875A1 (de) * 1974-06-14 1976-01-02 Basf Ag Verfahren zur herstellung von gammaeisen(iii)oxid
DE2447386A1 (de) * 1974-10-04 1976-04-22 Basf Ag Verfahren zur herstellung von gammaeisen(iii)-oxid
FR2286796A1 (fr) * 1974-10-04 1976-04-30 Basf Ag Procede de production de ferri-oxyde g
FR2359884A1 (fr) * 1976-07-27 1978-02-24 Bayer Ag Procede hydrothermique pour la production de pigments denses d'oxyde de fer
EP0001435A1 (de) * 1977-10-06 1979-04-18 BASF Aktiengesellschaft Verfahren zur Herstellung von agglomeratfreiem Gamma-Eisen(III)oxid
EP0014302A1 (de) * 1979-02-03 1980-08-20 BASF Aktiengesellschaft Verfahren zur Herstellung von hochkoerzitivem nadelförmigem Gamma-Eisen(III)oxid
EP0024693A3 (en) * 1979-09-01 1981-03-18 Basf Aktiengesellschaft Process for the preparation of acicular ferrimagnetic iron oxide, and its application
EP0078950A3 (en) * 1981-11-05 1983-09-07 Basf Aktiengesellschaft Process for the preparation of acicular, ferrimagnetic iron oxides
EP0097900A3 (en) * 1982-06-30 1986-02-19 Basf Aktiengesellschaft Process for the preparation of acicular ferromagnetic iron oxides

Also Published As

Publication number Publication date
NL7018467A (enrdf_load_stackoverflow) 1971-06-28

Similar Documents

Publication Publication Date Title
DE2646348C2 (de) Verfahren zur Herstellung von nadelförmigen, ferromagnetischen, im wesentlichen aus Eisen bestehenden Metallteilchen und deren Verwendung zur Herstellung von magnetischen Aufzeichnungsträgern
DE69509586T2 (de) Präparation von ultrafeinen Partikeln aus Wasser-in-Öl Mikroemulsionen
DE2842134A1 (de) Verfahren zum aufbringen einer schicht aus einem fluorierten material
DE2130921B2 (de) Verfahren zur Herstellung von Pulver aus Eisen und/oder Kobalt und/oder
DE2849173A1 (de) Verfahren zur herstellung von nadelfoermigem eisen-iii-oxid und dessen weiterverarbeitung
DE3633309A1 (de) Stabilisierte metalloxide
DE2743298C2 (enrdf_load_stackoverflow)
DE3130425A1 (de) Verfahren zur herstellung nadel (kristall)-foermiger,ferromagnetischer metallpartikel fuer magnetische aufzeichnungsmedien
DE2064804A1 (en) High magnetic iron oxide prodn
DE69513444T2 (de) Präparation von gemischten ultrafeinen Partikeln aus einer PFPE Mikroemulsion
DE2520643C2 (de) Verfahren zur Herstellung von γ-Eisen(III)oxid
DE2403366C2 (de) Verfahren zur Herstellung von mit einer Schutzschicht überzogenen ferromagnetischen Teilchen
EP0105110B1 (de) Verfahren zur Herstellung nadelförmiger, im wesentlichen aus Eisen bestehender ferromagnetischer Metallteilchen
DE2535277A1 (de) Verfahren zur stabilisierung pyrophorer metallpulver
DE2428875A1 (de) Verfahren zur herstellung von gammaeisen(iii)oxid
DE3631193A1 (de) Magnetische eisenoxidpigmente und verfahren zu ihrer herstellung
DE3904757A1 (de) Verfahren zur herstellung einer magnetfluessigkeit
DE3224325A1 (de) Verfahren zur herstellung von nadelfoermigen, ferrimagnetischen eisenoxiden
EP0024692A2 (de) Verfahren zur Herstellung nadelförmiger ferromagnetischer Eisenteilchen und deren Verwendung
DE1592492B1 (de) Verfahren zur Herstellung von ferromagnetischem Chromdioxyd
EP0237943B1 (de) Verfahren zur Herstellung von nadelförmigem alpha-Eisen-III-Oxid
DE2440737A1 (de) Verfahren zum herstellen von dispersionen von kobalt-phosphor-teilchen
DE3325613A1 (de) Verfahren zur herstellung von kobalt und zweiwertiges eisen enthaltendem, ferromagnetischem eisenoxid
DE2213131A1 (de) Kobalthaltiges Magnetpulver und Verfahren zu dessen Herstellung
DE1204644B (de) Verfahren zur Herstellung von insbesondere als Ausgangsmaterial fuer die Herstellung von hochkoerzitivem ª†-Eisen(III)-oxyd geeignetem nadelfoermigem Eisenoxydgelb, alpha-OH