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BRPI0508979A - material magnético de óxido e magneto sinterizado - Google Patents

material magnético de óxido e magneto sinterizado

Info

Publication number
BRPI0508979A
BRPI0508979A BRPI0508979-4A BRPI0508979A BRPI0508979A BR PI0508979 A BRPI0508979 A BR PI0508979A BR PI0508979 A BRPI0508979 A BR PI0508979A BR PI0508979 A BRPI0508979 A BR PI0508979A
Authority
BR
Brazil
Prior art keywords
magnet
magnetic material
oxide material
sintered oxide
group
Prior art date
Application number
BRPI0508979-4A
Other languages
English (en)
Inventor
Yoshinori Kobayashi
Seiichi Kosokawa
Sachio Toyota
Original Assignee
Neomax 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 Neomax Co Ltd filed Critical Neomax Co Ltd
Publication of BRPI0508979A publication Critical patent/BRPI0508979A/pt
Publication of BRPI0508979B1 publication Critical patent/BRPI0508979B1/pt

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    • 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
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    • 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
    • C04B35/2608—Compositions containing one or more ferrites of the group comprising manganese, zinc, nickel, copper or cobalt and one or more ferrites of the group comprising rare earth metals, alkali metals, alkaline earth metals or lead
    • C04B35/2633—Compositions containing one or more ferrites of the group comprising manganese, zinc, nickel, copper or cobalt and one or more ferrites of the group comprising rare earth metals, alkali metals, alkaline earth metals or lead containing barium, strontium or calcium
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  • Engineering & Computer Science (AREA)
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  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Power Engineering (AREA)
  • Magnetic Ceramics (AREA)
  • Hard Magnetic Materials (AREA)

Abstract

MATERIAL MAGNéTICO DE óXIDO DE MAGNETO SINTERIZADO. A presente invenção refere-se a um material magnético de óxido de acordo com a presente invenção que é representado pela fórmula: (1.x) CaO.(x/2)R~ 2~ O~ 3~. (n.y/2)Fe~ 2~O~ 3~.yMO, onde R é pelo menos um elemento selecionado do grupo que consiste em La, nd e Pr e sempre inclui la,M que é pelo menos um elemento selecionado do grupo consistindo em Co, Zn, Ni e Mn e sempre inclui Co, e as frações molares x,y, e n satisfazem 0,4.x.0,6,0,2.y0,35,4.n.6 e 1,4.x/y.2,5. O material magnético de óxido inclui uma ferrita tendo uma estrutura de magnetoplumbita do tipi M hexagonal como uma fase principal.
BRPI0508979A 2004-09-10 2005-09-08 material magnético de óxido e magneto sinterizado BRPI0508979B1 (pt)

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US20100237273A1 (en) 2010-09-23
BRPI0508979B1 (pt) 2016-07-12
US20070194269A1 (en) 2007-08-23
KR100910048B1 (ko) 2009-07-30
CN1956935A (zh) 2007-05-02
US7758767B2 (en) 2010-07-20
KR20060132917A (ko) 2006-12-22
CN1956935B (zh) 2010-05-05
EP1808422A4 (en) 2011-04-13

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