NL191842C - Werkwijze ter bereiding van een hexagonaal ferrietpoeder. - Google Patents

Werkwijze ter bereiding van een hexagonaal ferrietpoeder.

Info

Publication number
NL191842C
NL191842C NL8600805A NL8600805A NL191842C NL 191842 C NL191842 C NL 191842C NL 8600805 A NL8600805 A NL 8600805A NL 8600805 A NL8600805 A NL 8600805A NL 191842 C NL191842 C NL 191842C
Authority
NL
Netherlands
Prior art keywords
preparing
ferrite powder
hexagonal ferrite
hexagonal
powder
Prior art date
Application number
NL8600805A
Other languages
English (en)
Other versions
NL8600805A (nl
NL191842B (nl
Original Assignee
Sony Corp
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 JP12017585A external-priority patent/JPH069167B2/ja
Priority claimed from JP60122819A external-priority patent/JPH0692254B2/ja
Priority claimed from JP15661985A external-priority patent/JPH0685370B2/ja
Priority claimed from JP15700985A external-priority patent/JPH0685371B2/ja
Application filed by Sony Corp filed Critical Sony Corp
Publication of NL8600805A publication Critical patent/NL8600805A/nl
Publication of NL191842B publication Critical patent/NL191842B/nl
Priority to NL9600010A priority Critical patent/NL9600010A/nl
Application granted granted Critical
Publication of NL191842C publication Critical patent/NL191842C/nl

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
    • C01G49/0018—Mixed oxides or hydroxides
    • C01G49/0036—Mixed oxides or hydroxides containing one alkaline earth metal, magnesium or lead
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G49/00—Compounds of iron
    • C01G49/009—Compounds containing, besides iron, two or more other elements, with the exception of oxygen or hydrogen
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G51/00—Compounds of cobalt
    • C01G51/006—Compounds containing, besides cobalt, two or more other elements, with the exception of oxygen or hydrogen
    • 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
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2002/00—Crystal-structural characteristics
    • C01P2002/02—Amorphous compounds
    • 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
    • C01P2002/54—Solid solutions containing elements as dopants one element only
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/20—Particle morphology extending in two dimensions, e.g. plate-like
    • C01P2004/22—Particle morphology extending in two dimensions, e.g. plate-like with a polygonal circumferential shape
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/54—Particles characterised by their aspect ratio, i.e. the ratio of sizes in the longest to the shortest dimension
    • 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
    • C01P2006/12—Surface area
    • 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
    • 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
    • C01P2006/60—Optical properties, e.g. expressed in CIELAB-values

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Inorganic Chemistry (AREA)
  • Nanotechnology (AREA)
  • Composite Materials (AREA)
  • Physics & Mathematics (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Materials Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hard Magnetic Materials (AREA)
  • Compounds Of Iron (AREA)
  • Magnetic Record Carriers (AREA)
NL8600805A 1985-06-03 1986-03-27 Werkwijze ter bereiding van een hexagonaal ferrietpoeder. NL191842C (nl)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL9600010A NL9600010A (nl) 1985-06-03 1996-05-15 Werkwijze ter bereiding van hexagonale ferrietpoeders.

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
JP12017585A JPH069167B2 (ja) 1985-06-03 1985-06-03 六方晶系フエライト粒子粉末の製造方法
JP12017585 1985-06-03
JP12281985 1985-06-07
JP60122819A JPH0692254B2 (ja) 1985-06-07 1985-06-07 六方晶系フエライト粒子粉末の製造方法
JP15661985 1985-07-16
JP15661985A JPH0685370B2 (ja) 1985-07-16 1985-07-16 六方晶系フエライト粒子粉末の製造方法
JP15700985A JPH0685371B2 (ja) 1985-07-18 1985-07-18 六方晶系フエライト粒子粉末の製造方法
JP15700985 1985-07-18

Publications (3)

Publication Number Publication Date
NL8600805A NL8600805A (nl) 1987-01-02
NL191842B NL191842B (nl) 1996-05-01
NL191842C true NL191842C (nl) 1996-09-03

Family

ID=27470659

Family Applications (1)

Application Number Title Priority Date Filing Date
NL8600805A NL191842C (nl) 1985-06-03 1986-03-27 Werkwijze ter bereiding van een hexagonaal ferrietpoeder.

Country Status (2)

Country Link
DE (1) DE3610250A1 (nl)
NL (1) NL191842C (nl)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5075169A (en) * 1988-06-08 1991-12-24 Toda Kogyo Corp. Plate-like composite ferrite particles for magnetic recording and process for producing the same
EP0352422A3 (de) * 1988-07-25 1990-12-27 Degussa Aktiengesellschaft Verfahren zur Herstellung von feinteiligen Erdalkali-und Bleiferriten für Datenträger

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3630667A (en) * 1969-04-01 1971-12-28 Stackpole Carbon Co Production of barium ferrite
JPS5627902A (en) * 1979-08-16 1981-03-18 Matsushita Electric Ind Co Ltd Manufacture of orientation ferrite material
DE3041960C2 (de) * 1979-11-08 1983-07-21 Tokyo Shibaura Denki K.K., Kawasaki, Kanagawa Verfahren zur Herstellung eines Magnetpulvers für die Magnetaufzeichnung mit hoher Dichte
US4279763A (en) * 1980-04-09 1981-07-21 Aimants Ugimag S.A. Process of preparing ferrite powders
JPS5756329A (en) * 1980-09-22 1982-04-03 Toshiba Corp Manufacture of magnetic powder for magnetic recording medium
US4493874A (en) * 1983-03-08 1985-01-15 Tokyo Shibaura Denki Kabushiki Kaisha Production of a magnetic powder having a high dispersibility
JPS6181608A (ja) * 1984-09-28 1986-04-25 Sony Corp 六方晶系フエライト粒子粉末の製造方法
DE3537623A1 (de) * 1985-10-23 1987-04-23 Bayer Ag Feinteilige isometrische hexaferritpigmente mit w-struktur, verfahren zu ihrer herstellung und deren verwendung

Also Published As

Publication number Publication date
NL8600805A (nl) 1987-01-02
NL191842B (nl) 1996-05-01
DE3610250A1 (de) 1986-12-04

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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
V1 Lapsed because of non-payment of the annual fee

Effective date: 19981001