FR2650115B1 - Materiau a structure ferrite spinelle lacunaire, a proprietes magnetiques ou magneto-optiques optimisees et stabilisees, leur preparation et leur application - Google Patents

Materiau a structure ferrite spinelle lacunaire, a proprietes magnetiques ou magneto-optiques optimisees et stabilisees, leur preparation et leur application

Info

Publication number
FR2650115B1
FR2650115B1 FR8909867A FR8909867A FR2650115B1 FR 2650115 B1 FR2650115 B1 FR 2650115B1 FR 8909867 A FR8909867 A FR 8909867A FR 8909867 A FR8909867 A FR 8909867A FR 2650115 B1 FR2650115 B1 FR 2650115B1
Authority
FR
France
Prior art keywords
magneto
optimized
preparation
application
optical properties
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 - Fee Related
Application number
FR8909867A
Other languages
English (en)
Other versions
FR2650115A1 (fr
Inventor
Rousset Abel Claude Marie
Mollard Paul Andre Marcel
Tailhades Philippe
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.)
Centre National de la Recherche Scientifique CNRS
Original Assignee
Centre National de la Recherche Scientifique CNRS
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 Centre National de la Recherche Scientifique CNRS filed Critical Centre National de la Recherche Scientifique CNRS
Priority to FR8909867A priority Critical patent/FR2650115B1/fr
Priority to DE19904023202 priority patent/DE4023202A1/de
Priority to JP2193793A priority patent/JPH03116802A/ja
Publication of FR2650115A1 publication Critical patent/FR2650115A1/fr
Application granted granted Critical
Publication of FR2650115B1 publication Critical patent/FR2650115B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
    • C04B35/265—Compositions containing one or more ferrites of the group comprising manganese or zinc and one or more ferrites of the group comprising nickel, copper or cobalt
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/10582—Record carriers characterised by the selection of the material or by the structure or form
    • G11B11/10586—Record carriers characterised by the selection of the material or by the structure or form characterised by the selection of the material
    • G11B11/10589—Details
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
    • H01F1/10—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure
    • H01F1/11—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure in the form of particles

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Structural Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Power Engineering (AREA)
  • Organic Chemistry (AREA)
  • Hard Magnetic Materials (AREA)
  • Compounds Of Iron (AREA)
  • Magnetic Record Carriers (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
  • Thin Magnetic Films (AREA)
  • Paints Or Removers (AREA)
FR8909867A 1989-07-21 1989-07-21 Materiau a structure ferrite spinelle lacunaire, a proprietes magnetiques ou magneto-optiques optimisees et stabilisees, leur preparation et leur application Expired - Fee Related FR2650115B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR8909867A FR2650115B1 (fr) 1989-07-21 1989-07-21 Materiau a structure ferrite spinelle lacunaire, a proprietes magnetiques ou magneto-optiques optimisees et stabilisees, leur preparation et leur application
DE19904023202 DE4023202A1 (de) 1989-07-21 1990-07-20 Materialien mit fehlgeordneter ferrit-spinell-struktur mit optimierten und stabilisierten magnetischen oder magneto-optischen eigenschaften. ihre herstellung und ihre verwendung
JP2193793A JPH03116802A (ja) 1989-07-21 1990-07-21 磁性材料及びその製造方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8909867A FR2650115B1 (fr) 1989-07-21 1989-07-21 Materiau a structure ferrite spinelle lacunaire, a proprietes magnetiques ou magneto-optiques optimisees et stabilisees, leur preparation et leur application

Publications (2)

Publication Number Publication Date
FR2650115A1 FR2650115A1 (fr) 1991-01-25
FR2650115B1 true FR2650115B1 (fr) 1995-04-28

Family

ID=9384027

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8909867A Expired - Fee Related FR2650115B1 (fr) 1989-07-21 1989-07-21 Materiau a structure ferrite spinelle lacunaire, a proprietes magnetiques ou magneto-optiques optimisees et stabilisees, leur preparation et leur application

Country Status (3)

Country Link
JP (1) JPH03116802A (fr)
DE (1) DE4023202A1 (fr)
FR (1) FR2650115B1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2714205A1 (fr) * 1993-12-17 1995-06-23 Atg Sa Matériau composite pour l'enregistrement magnéto-optique, sa préparation et son utilisation.
US6853473B2 (en) * 2002-01-24 2005-02-08 Tdk Corporation Faraday rotator and optical device comprising the same, and antireflection film and optical device comprising the same

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1142215A (en) * 1966-02-21 1969-02-05 Nippon Electric Co Improvements in or relating to ferrite particles and process for manufacturing same
DE3435698A1 (de) * 1984-09-28 1986-04-03 Basf Ag, 6700 Ludwigshafen Verfahren zur herstellung von feinteiligem isotropen ferritpulver mit spinellstruktur
FR2587990B1 (fr) * 1985-09-30 1987-11-13 Centre Nat Rech Scient Compositions d'oxydes magnetiques particulaires a structure de type spinelle lacunaire, leur preparation et leur application

Also Published As

Publication number Publication date
FR2650115A1 (fr) 1991-01-25
JPH03116802A (ja) 1991-05-17
DE4023202A1 (de) 1991-01-24

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Legal Events

Date Code Title Description
ST Notification of lapse