BE591370A - Oxyde de fer (III) gamma, cobaltifère et aciculaire, et son procédé de préparation. - Google Patents

Oxyde de fer (III) gamma, cobaltifère et aciculaire, et son procédé de préparation.

Info

Publication number
BE591370A
BE591370A BE591370A BE591370A BE591370A BE 591370 A BE591370 A BE 591370A BE 591370 A BE591370 A BE 591370A BE 591370 A BE591370 A BE 591370A BE 591370 A BE591370 A BE 591370A
Authority
BE
Belgium
Prior art keywords
acicular
cobalt
rich
iron
iii
Prior art date
Application number
BE591370A
Other languages
English (en)
Inventor
Wilhelm Abeck
Franz Hund
Original Assignee
Bayer Ag
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 Bayer Ag filed Critical Bayer Ag
Publication of BE591370A publication Critical patent/BE591370A/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
    • 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
    • C01G49/06—Ferric oxide [Fe2O3]
    • 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
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2002/00—Crystal-structural characteristics
    • C01P2002/50—Solid solutions
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2002/00—Crystal-structural characteristics
    • C01P2002/50—Solid solutions
    • C01P2002/52—Solid solutions containing elements as dopants
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/10—Particle morphology extending in one dimension, e.g. needle-like
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/64—Nanometer sized, i.e. from 1-100 nanometer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/42—Magnetic properties

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Nanotechnology (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Inorganic Chemistry (AREA)
  • Composite Materials (AREA)
  • Hard Magnetic Materials (AREA)
  • Compounds Of Iron (AREA)
BE591370A 1959-06-12 1960-05-30 Oxyde de fer (III) gamma, cobaltifère et aciculaire, et son procédé de préparation. BE591370A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF28678A DE1226997B (de) 1959-06-12 1959-06-12 Verfahren zur Herstellung von nadelfoermigem, cobalthaltigem gamma-Eisen(III)-oxid

Publications (1)

Publication Number Publication Date
BE591370A true BE591370A (fr) 1960-09-16

Family

ID=7092979

Family Applications (1)

Application Number Title Priority Date Filing Date
BE591370A BE591370A (fr) 1959-06-12 1960-05-30 Oxyde de fer (III) gamma, cobaltifère et aciculaire, et son procédé de préparation.

Country Status (3)

Country Link
BE (1) BE591370A (fr)
CH (1) CH397617A (fr)
DE (1) DE1226997B (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2235383C3 (de) * 1971-07-19 1986-10-23 Hitachi Maxell, Ltd., Ibaraki, Osaka Verfahren zur Herstellung ferromagnetischer nadelförmiger Teilchen für ein Aufzeichnungssystem
GB1482157A (en) * 1974-05-06 1977-08-10 Pfizer Cobalt acicular gamma ferric oxide

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB721630A (en) * 1951-08-29 1955-01-12 Anorgana Gmbh Method for the production of ª†-fe o of improved magnetic properties
GB719283A (en) * 1951-09-20 1954-12-01 Philips Electrical Ind Ltd Improvements in or relating to a method of producing finely divided magnetic iron oxide
DE936392C (de) * 1953-12-03 1955-12-15 Basf Ag Verfahren zur Herstellung von magnetischen Eisenoxyden

Also Published As

Publication number Publication date
CH397617A (de) 1965-08-31
DE1226997B (de) 1966-10-20

Similar Documents

Publication Publication Date Title
CA635328A (en) Process for preparing acrylonitrile
BE606437A (fr) Oxyde de fer (III) gamma et son procédé de préparation.
ES280079A1 (es) Procedimiento de fabricación de una anhidropenicilina
BE591370A (fr) Oxyde de fer (III) gamma, cobaltifère et aciculaire, et son procédé de préparation.
BE586803A (fr) Procédé de préparation de 1,3-diaryl-5-amino-pyridazones-(6).
CA683419A (en) Method for preparing acrylonitrile
FR1258623A (fr) Oxyde de fer (iii) gamma, cobaltifère et aciculaire, et son procédé de préparation
CA636191A (en) Process for preparing acrylonitrile
FR1342117A (fr) Oxyde de fer (iii) gamma et son procédé de préparation
FR1208270A (fr) Procédé de réduction d'oxyde de fer
FR1261578A (fr) Procédé de préparation d'oxyde d'uranium
FR1315168A (fr) Procédé de préparation d'oxyde de fer et de chlore
BE592384A (fr) Procédé de préparation d'oxyde d'uranium
BE597542A (fr) Procédé de préparation dealpha,beta-di-[imidazyl-(2)]-éthylènes.
CA645088A (en) Process for obtaining uranium oxide
AU222950B2 (en) Process for recovering rare-earth oxides
CA535024A (fr) Appareil polarographique a rayons cathodiques
AU234731B2 (en) Improved swaging process
CA587382A (fr) Procede pour obtenir de l'acide 1,4-dicaffeylquinique
CA526368A (fr) Methode de reduction d'arriere-plan dans detecteurs de rayons gamma
CA516616A (fr) Acide octahydronaphtalene-1,2-dicarboxylique bisubstitue
CH395075A (fr) Procédé de préparation d'un stéroïde 18,20-oxygéné
CA603223A (en) Disubstituted pyrrolidones and process for the manufacture thereof
AU253387B2 (en) Improved knitted blouses
AU242793B2 (en) Process for preparing cyclohexanone