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WO2004102595A3 - Ferrite material for a permanent magnet and method for production therof - Google Patents

Ferrite material for a permanent magnet and method for production therof Download PDF

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Publication number
WO2004102595A3
WO2004102595A3 PCT/EP2004/050825 EP2004050825W WO2004102595A3 WO 2004102595 A3 WO2004102595 A3 WO 2004102595A3 EP 2004050825 W EP2004050825 W EP 2004050825W WO 2004102595 A3 WO2004102595 A3 WO 2004102595A3
Authority
WO
WIPO (PCT)
Prior art keywords
ferrite material
permanent magnet
production
production therof
therof
Prior art date
Application number
PCT/EP2004/050825
Other languages
French (fr)
Other versions
WO2004102595A2 (en
Inventor
Richard Lebourgeois
Original Assignee
Thales Sa
Richard Lebourgeois
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 Thales Sa, Richard Lebourgeois filed Critical Thales Sa
Publication of WO2004102595A2 publication Critical patent/WO2004102595A2/en
Publication of WO2004102595A3 publication Critical patent/WO2004102595A3/en

Links

Classifications

    • 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
    • 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
    • C04B35/2683—Other ferrites containing alkaline earth metals or lead
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
    • H01F41/0273—Imparting anisotropy
    • 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
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
    • C04B2235/3213—Strontium oxides or oxide-forming salts thereof
    • 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
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3224—Rare earth oxide or oxide forming salts thereof, e.g. scandium oxide
    • C04B2235/3227—Lanthanum oxide or oxide-forming salts thereof
    • 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
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3281—Copper oxides, cuprates or oxide-forming salts thereof, e.g. CuO or Cu2O
    • 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
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/74—Physical characteristics
    • C04B2235/76—Crystal structural characteristics, e.g. symmetry
    • C04B2235/767—Hexagonal symmetry, e.g. beta-Si3N4, beta-Sialon, alpha-SiC or hexa-ferrites

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Hard Magnetic Materials (AREA)

Abstract

The invention relates to a ferrite material with a hexaferrite structure, characterised by the following formula: A1-xByCZDtCuvFel2-WOl9 with 2(x-z-v) + 3(w-y) - 4t = 0, A = Ba, Sr, Ca or Pb, B = Al, Cr, Ga, Bi, B, La, Y or a rare earth, C = Co, Zn, Cd, Ni, Mg or Mn, D = Ti, Sn, Zr, Si, Ge, where 0<x <0.30, 0<y<0.30, 0<z<0.30, 0<t<0.30, 0.05 <v< 0.30, 0 <w< 0.90. Said ferrite material is particularly suitable for use as a low-cost permanent magnet. The invention further relates to a method for production of such a material and is of application to hyper-frequency circulators.
PCT/EP2004/050825 2003-05-16 2004-05-17 Ferrite material for a permanent magnet and method for production therof WO2004102595A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0305911 2003-05-16
FR0305911A FR2854981B1 (en) 2003-05-16 2003-05-16 FERRITE MATERIAL FOR PERMANENT MAGNET AND METHOD FOR MANUFACTURING THE SAME

Publications (2)

Publication Number Publication Date
WO2004102595A2 WO2004102595A2 (en) 2004-11-25
WO2004102595A3 true WO2004102595A3 (en) 2005-01-27

Family

ID=33306417

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2004/050825 WO2004102595A2 (en) 2003-05-16 2004-05-17 Ferrite material for a permanent magnet and method for production therof

Country Status (2)

Country Link
FR (1) FR2854981B1 (en)
WO (1) WO2004102595A2 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6596829B2 (en) * 2014-03-07 2019-10-30 Ｔｄｋ株式会社 Ferrite sintered magnet and motor including the same
FR3074170A1 (en) * 2017-11-30 2019-05-31 Thales FERRITE MATERIAL OF GRENATE STRUCTURE WITH HIGH PERMITTIVITY AND LOW SINTER TEMPERATURE
CN110078492B (en) * 2019-04-30 2021-09-24 电子科技大学 A kind of magnesium ferrite-based low-loss magnetic dielectric material and preparation method thereof
CN111116192B (en) * 2019-12-25 2021-12-03 深圳顺络电子股份有限公司 Microwave ferrite material, preparation method and microwave communication device
WO2022038531A1 (en) * 2020-08-19 2022-02-24 Mahindra Cie Automotive Ltd. A permanent magnetic material and a method for its preparation
CN114804847B (en) * 2021-01-21 2023-05-23 自贡市江阳磁材有限责任公司 Permanent magnetic ferrite and preparation method thereof
CN115084870B (en) * 2022-08-02 2025-01-07 厦门大学 A soft ferrite absorbing material and a preparation method thereof, and a composite absorbing material
CN116903358B (en) * 2023-08-10 2024-12-03 上海阖煦微波技术有限公司 Microwave gyromagnetic ferrite material and preparation method thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0377821A1 (en) * 1988-12-14 1990-07-18 Bayer Ag Method for the preparation of particulate magnetic hexagonal ferrites by spray-drying barium salts and iron oxides, and their use
EP0758786A1 (en) * 1995-08-11 1997-02-19 TDK Corporation Magnet powder, sintered magnet, bonded magnet, and magnetic recording medium
EP1011114A1 (en) * 1998-06-25 2000-06-21 TDK Corporation Hexagonal ferrite magnet

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0377821A1 (en) * 1988-12-14 1990-07-18 Bayer Ag Method for the preparation of particulate magnetic hexagonal ferrites by spray-drying barium salts and iron oxides, and their use
EP0758786A1 (en) * 1995-08-11 1997-02-19 TDK Corporation Magnet powder, sintered magnet, bonded magnet, and magnetic recording medium
EP1011114A1 (en) * 1998-06-25 2000-06-21 TDK Corporation Hexagonal ferrite magnet

Also Published As

Publication number Publication date
FR2854981A1 (en) 2004-11-19
WO2004102595A2 (en) 2004-11-25
FR2854981B1 (en) 2014-05-23

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