KR900017924A - 판상바륨 페라이트 미분말의 제조 방법 - Google Patents

판상바륨 페라이트 미분말의 제조 방법 Download PDF

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KR900017924A
KR900017924A KR1019890007547A KR890007547A KR900017924A KR 900017924 A KR900017924 A KR 900017924A KR 1019890007547 A KR1019890007547 A KR 1019890007547A KR 890007547 A KR890007547 A KR 890007547A KR 900017924 A KR900017924 A KR 900017924A
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South Korea
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barium ferrite
ions
fine powder
barium
heated
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KR1019890007547A
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KR960002625B1 (ko
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스스무 이와사끼
나루후미 가미사까
요시히꼬 나까네
이와오 야마사끼
쓰도무 하다나까
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마쓰모도 히로시
사까이 가가꾸 고오교 가부시끼가이샤
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Publication of KR900017924A publication Critical patent/KR900017924A/ko
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Publication of KR960002625B1 publication Critical patent/KR960002625B1/ko

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    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G49/00—Compounds of iron
    • 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
    • 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
    • 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
    • C01P2004/51—Particles with a specific particle size distribution
    • C01P2004/52—Particles with a specific particle size distribution highly monodisperse size distribution
    • 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

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Nanotechnology (AREA)
  • Inorganic Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Materials Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Physics & Mathematics (AREA)
  • Composite Materials (AREA)
  • Power Engineering (AREA)
  • Compounds Of Iron (AREA)
  • Hard Magnetic Materials (AREA)

Abstract

내용 없음

Description

판상바륨 페라이트 미분말의 제조 방법.
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음

Claims (1)

  1. 일반식 BaO. n[Fe1-mMm)203]
    (상기 식에서, M은 Co, Ti, Ni, Mn, Cu, Zn, In, Ge및 Nb로 된 군에서 선택된 적어도 1종의 치환원소를 나타내고, m은 0~0.2, n은 4~6을 나타낸다)로 표시되는 바륨페라이트에 있어서의 성분원소 몰비를 만족하도록 바륨 이온, 철(Ⅲ)이온 및 필요에 따라 치환원소 M이온을 함유하는 수용액에 알칼리를 첨가해서, 상기 이온의 공침물을 포함하는 PH12이상의 알칼리성 수성현탁액으로 하고, 이것을 50℃이상, 대기압하에서, 비등점이하의 온도로 가열해서 바륨페라이트 전구체를 생성시키고, 이어서, 이 바륨 페라이트 전구체를 가열 소성해서 바륨페라이트 미분말을 제조하는 방법에 있어서, 상기 알카리성 수성현탁액의 가열전 또는 가열후에 이 현탄액에 수용성 알칼리 금속탄산염, 탄산암모늄 또는, 탄산 가스로된 탄산화제를 첨가함과 동시에, 상기 바륨페라이트 전구체를 황산나트륨의 존재하에 700∼900℃의 온도로 소성하는 것을 특징으로 하는 평균입자지름 0.03∼0.1㎛, 판상 비 2∼5인 바륨페라이트 미분말의 제조방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019890007547A 1988-06-01 1989-05-31 판상 바륨페라이트 미분말의 제조방법 KR960002625B1 (ko)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP63-136214 1988-06-01
JP???63-136214 1988-06-01
JP63136214A JPH01305826A (ja) 1988-06-01 1988-06-01 板状バリウムフエライト微粉末の製造方法

Publications (2)

Publication Number Publication Date
KR900017924A true KR900017924A (ko) 1990-12-20
KR960002625B1 KR960002625B1 (ko) 1996-02-24

Family

ID=15169973

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Application Number Title Priority Date Filing Date
KR1019890007547A KR960002625B1 (ko) 1988-06-01 1989-05-31 판상 바륨페라이트 미분말의 제조방법

Country Status (4)

Country Link
US (1) US5078984A (ko)
JP (1) JPH01305826A (ko)
KR (1) KR960002625B1 (ko)
DE (1) DE3917502A1 (ko)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5686137A (en) * 1991-02-27 1997-11-11 Kabushiki Kaisha Toshiba Method of providing hexagonal ferrite magnetic powder with enhanced coercive force stability
US5662879A (en) * 1996-04-29 1997-09-02 Northrop Grumman Corporation Method for preparation of ferrite powders at room temperature
JP4647731B2 (ja) * 1997-09-19 2011-03-09 Ｔｄｋ株式会社 磁石粉末、焼結磁石、それらの製造方法、ボンディッド磁石および磁気記録媒体
WO2000078403A1 (en) * 1999-06-24 2000-12-28 The University Of Chicago Method for the decontamination of metallic surfaces
CN100406406C (zh) * 2005-07-28 2008-07-30 上海交通大学 M型钡铁氧体磁性粉体的制备方法
CN115180934B (zh) * 2022-07-19 2023-01-06 浙江大学 一种具有复合微结构介电可调协同掺杂钡铁氧体薄膜及其制备方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6012973B2 (ja) * 1980-05-08 1985-04-04 株式会社東芝 Ｂａ−フエライト粉末の製造方法
DE3042959A1 (de) * 1980-11-14 1982-07-08 Basf Ag, 6700 Ludwigshafen Verfahren zur herstellung von feinteiligem hochkoerzitivem bariumferrit, sowie seine verwendung zur herstellung von magnetischen aufzeichnungstraegern
EP0072436B1 (de) * 1981-08-19 1986-10-01 BASF Aktiengesellschaft Verfahren zur Herstellung feinteiliger Ferritpulver
JPH08702B2 (ja) * 1985-04-04 1996-01-10 石原産業株式会社 磁気記録用強磁性微粉末の製造方法
DE3729693A1 (de) * 1986-09-05 1988-05-05 Sony Corp Verfahren zur herstellung feiner bariumferritteilchen

Also Published As

Publication number Publication date
US5078984A (en) 1992-01-07
JPH0581532B2 (ko) 1993-11-15
DE3917502A1 (de) 1989-12-14
JPH01305826A (ja) 1989-12-11
KR960002625B1 (ko) 1996-02-24

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