KR870007536A - 판상(板狀) 바륨 페라이트 입자 및 그 제조방법 - Google Patents
판상(板狀) 바륨 페라이트 입자 및 그 제조방법 Download PDFInfo
- Publication number
- KR870007536A KR870007536A KR870000751A KR870000751A KR870007536A KR 870007536 A KR870007536 A KR 870007536A KR 870000751 A KR870000751 A KR 870000751A KR 870000751 A KR870000751 A KR 870000751A KR 870007536 A KR870007536 A KR 870007536A
- Authority
- KR
- South Korea
- Prior art keywords
- iii
- plate
- ferrite particles
- barium ferrite
- producing same
- Prior art date
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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
-
- 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
- C01G49/009—Compounds containing, besides iron, 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
-
- 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
- C01P2002/00—Crystal-structural characteristics
- C01P2002/30—Three-dimensional structures
- C01P2002/32—Three-dimensional structures spinel-type (AB2O4)
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/01—Particle morphology depicted by an image
- C01P2004/04—Particle morphology depicted by an image obtained by TEM, STEM, STM or AFM
-
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Nanotechnology (AREA)
- Organic Chemistry (AREA)
- Power Engineering (AREA)
- Composite Materials (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Iron (AREA)
- Hard Magnetic Materials (AREA)
Abstract
내용 없음
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제 1 도는 Fe(Ⅲ)을 기준으로 하여 7.86원자%의 Co를 첨가하는 경우에 있어서 Co에 대한 Ti의 첨가비(몰비)와 제조된 판상 바륨 페라이트 입자들의 입도 사이의 관계를 도시한 것임.
제 2 도 및 3도는 실시예 1 및 비교예 1의 수용액으로부터 각각 제조한 판상 바륨 페라이트 입자들의 입자 구조에 대한 전자 현미경사진(×100,000)임.
Claims (2)
- 0.03㎛ 이상 0.1㎛ 이하의 평균 입경을 갖고 하기 일반식(Ⅰ)로 표시되는 판상 바륨 페라이트 입자:BaO·n[Fe1-x-yCoxTiy)2O3-x+y]………………………………(Ⅰ)여기서,x 및 y는 독립적으로 0.02 내지 0.12이고,n은 4 내지 7이며;Fe(Ⅲ)에 대한 Co의 원자비는 0.02 : 1 내지 0.13 : 1이고,Co에 대한 Ti의 몰비는 0 이상 0.8이하임.
- 현탄액내에서 Fe(Ⅲ)의 양에 대한 Co양의 원자비가 0.02 : 1 내지 0.13 : 1이며, Co에 대한 Ti의 몰비가 0이상 0.8 이하인, Fe(Ⅲ), Co(Ⅱ), Ti(Ⅳ) 및 Ba 이온을 함유하는 수산화철(Ⅲ)의 염기성 수성 현탁액을 120 내지 33℃의 온도에서 오토클레이브 처리해서 평균 입경을 0.03㎛ 이상 0.1㎛ 이하로 조절하는 단계를 포함하는 하기 일반식(Ⅰ)로 표시되는 판상 바륨 페라이트 입자의 제조방법 :BaO·n[Fe1-x-yCoxTiy)2O3-x+y]………………………………(Ⅰ)여기서,x 및 y는 독립적으로 0.02 내지 0.12이고; n은 4 내지 7이며; Fe(Ⅲ)에 대한 Co의 원자비는 0.02 : 1 내지 0.13 : 1이고; Co에 대한 Ti의 몰비는 0 이상 0.8 이하임.※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP61018833A JPS62176921A (ja) | 1986-01-29 | 1986-01-29 | 板状Baフエライト微粒子粉末の製造法 |
JP18833 | 1986-01-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
KR870007536A true KR870007536A (ko) | 1987-08-20 |
Family
ID=11982563
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR870000751A KR870007536A (ko) | 1986-01-29 | 1987-01-28 | 판상(板狀) 바륨 페라이트 입자 및 그 제조방법 |
Country Status (5)
Country | Link |
---|---|
US (1) | US4752407A (ko) |
EP (1) | EP0231128B1 (ko) |
JP (1) | JPS62176921A (ko) |
KR (1) | KR870007536A (ko) |
DE (1) | DE3774584D1 (ko) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4828916A (en) * | 1986-12-27 | 1989-05-09 | Toda Kogyo Corporation | Plate-like magnetoplumbite type ferrite particles for magnetic recording and magnetic recording media using the same |
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 |
JP2644322B2 (ja) * | 1989-03-31 | 1997-08-25 | 株式会社東芝 | 磁気記録媒体 |
JPH0672018B2 (ja) * | 1989-04-22 | 1994-09-14 | 戸田工業株式会社 | 磁気記録用板状複合フェライト微粒子粉末及びその製造法 |
JP5390756B2 (ja) * | 2007-08-02 | 2014-01-15 | 関東電化工業株式会社 | 薄片状Baフェライト微粒子の製造方法 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5941806A (ja) * | 1982-08-31 | 1984-03-08 | Toda Kogyo Corp | 磁気記録用板状Baフエライト粒子粉末の製造法 |
JPS59161002A (ja) * | 1983-02-05 | 1984-09-11 | Toda Kogyo Corp | 磁気記録用板状Baフェライト微粒子粉末及びその製造法 |
US4493874A (en) * | 1983-03-08 | 1985-01-15 | Tokyo Shibaura Denki Kabushiki Kaisha | Production of a magnetic powder having a high dispersibility |
JPS59175707A (ja) * | 1983-03-26 | 1984-10-04 | Toda Kogyo Corp | 磁気記録用板状Baフエライト微粒子粉末及びその製造法 |
JPS6081804A (ja) * | 1983-10-12 | 1985-05-09 | Toda Kogyo Corp | 磁気記録用六角板状Baフエライト微粒子粉末及びその製造法 |
JPS6095902A (ja) * | 1983-10-31 | 1985-05-29 | Toda Kogyo Corp | 磁気記録用板状Baフエライト微粒子粉末の製造法 |
JPS60137002A (ja) * | 1983-12-26 | 1985-07-20 | Toda Kogyo Corp | 磁気記録用板状Baフエライト微粒子粉末の製造法 |
KR900000429B1 (ko) * | 1984-05-31 | 1990-01-30 | 도다 교오교오 가부시끼가이샤 | 자기 기록용 판상 아철산 바륨입자와 그 제조방법 |
-
1986
- 1986-01-29 JP JP61018833A patent/JPS62176921A/ja active Pending
-
1987
- 1987-01-28 US US07/007,760 patent/US4752407A/en not_active Expired - Lifetime
- 1987-01-28 KR KR870000751A patent/KR870007536A/ko not_active Application Discontinuation
- 1987-01-29 DE DE8787300784T patent/DE3774584D1/de not_active Expired - Lifetime
- 1987-01-29 EP EP87300784A patent/EP0231128B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0231128A3 (en) | 1988-09-21 |
EP0231128A2 (en) | 1987-08-05 |
US4752407A (en) | 1988-06-21 |
EP0231128B1 (en) | 1991-11-21 |
JPS62176921A (ja) | 1987-08-03 |
DE3774584D1 (de) | 1992-01-02 |
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Legal Events
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WITN | Application deemed withdrawn, e.g. because no request for examination was filed or no examination fee was paid |