DE69305487D1 - Magnetisches kobalthaltiges Eisenoxid und Verfahren zu dessen Herstellung - Google Patents
Magnetisches kobalthaltiges Eisenoxid und Verfahren zu dessen HerstellungInfo
- Publication number
- DE69305487D1 DE69305487D1 DE69305487T DE69305487T DE69305487D1 DE 69305487 D1 DE69305487 D1 DE 69305487D1 DE 69305487 T DE69305487 T DE 69305487T DE 69305487 T DE69305487 T DE 69305487T DE 69305487 D1 DE69305487 D1 DE 69305487D1
- Authority
- DE
- Germany
- Prior art keywords
- production
- iron oxide
- containing iron
- magnetic cobalt
- cobalt
- 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 - Lifetime
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G49/00—Compounds of iron
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G49/00—Compounds of iron
- C01G49/02—Oxides; Hydroxides
- C01G49/06—Ferric oxide (Fe2O3)
-
- 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
- G11B5/70652—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 gamma - Fe2 O3
- G11B5/70668—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 gamma - Fe2 O3 containing a dopant
- G11B5/70673—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 gamma - Fe2 O3 containing a dopant containing Co
-
- 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
- G11B5/70684—Ferro-ferrioxydes
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
- Y10T428/2991—Coated
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP36211492A JP3244830B2 (ja) | 1992-12-29 | 1992-12-29 | コバルト含有磁性酸化鉄粉末およびその製造方法 |
JP5052843A JP3020374B2 (ja) | 1993-02-02 | 1993-02-02 | コバルト含有磁性酸化鉄粉末の製造方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69305487D1 true DE69305487D1 (de) | 1996-11-21 |
DE69305487T2 DE69305487T2 (de) | 1997-03-13 |
Family
ID=26393513
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69305487T Expired - Lifetime DE69305487T2 (de) | 1992-12-29 | 1993-12-16 | Magnetisches kobalthaltiges Eisenoxid und Verfahren zu dessen Herstellung |
Country Status (5)
Country | Link |
---|---|
US (1) | US5609789A (de) |
EP (1) | EP0604849B1 (de) |
KR (1) | KR100249538B1 (de) |
CN (1) | CN1069779C (de) |
DE (1) | DE69305487T2 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1025115A (ja) * | 1996-07-04 | 1998-01-27 | Sony Corp | 酸化鉄系磁性粉末及びこれを用いた磁気記録媒体 |
ATE503726T1 (de) * | 2000-09-26 | 2011-04-15 | Lanxess Deutschland Gmbh | Kontakt- und adsorber-granulate |
CN1315734C (zh) * | 2005-03-30 | 2007-05-16 | 山东师范大学 | 一维α-FeOOH纳米材料生产方法 |
DE102006020840B4 (de) | 2006-05-04 | 2010-08-12 | Krause-Röhm-Systeme Ag | Verfahren zur Gewinnung von Magnetit |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3904540A (en) * | 1972-02-11 | 1975-09-09 | Pfizer | Magnetic impulse record member |
US4176172A (en) * | 1975-12-22 | 1979-11-27 | Pfizer Inc. | Particle gamma ferric oxide |
DE2735316C3 (de) * | 1977-08-05 | 1981-01-29 | Basf Ag, 6700 Ludwigshafen | Verfahren zur Herstellung von nadeiförmigen, ferrimagnetischen Eisenoxiden |
DE2805405A1 (de) * | 1978-02-09 | 1979-08-16 | Basf Ag | Verfahren zur herstellung von nadelfoermigen, ferrimagnetischen eisenoxiden |
JPS5520278A (en) * | 1978-07-31 | 1980-02-13 | Hitachi Maxell Ltd | Production of magnetic powder for magnetic recording medium |
DE2935444A1 (de) * | 1979-09-01 | 1981-03-19 | Basf Ag, 6700 Ludwigshafen | Verfahren zur herstellung von nadelfoermigen ferrimagnetischem eisenoxid |
US4382822A (en) * | 1979-09-14 | 1983-05-10 | Pfizer Inc. | Synthetic rhombohedral magnetite pigment |
JPS5745206A (en) * | 1980-08-30 | 1982-03-15 | Titan Kogyo Kk | Manufacture of acicular powder of magnetic iron oxide covered with cobalt |
JPS57129828A (en) * | 1981-01-30 | 1982-08-12 | Daikin Ind Ltd | Manufacture of magnetic fine powder |
JPS5874529A (ja) * | 1981-10-29 | 1983-05-06 | Daikin Ind Ltd | 磁性微粒子の製法 |
DE3143870A1 (de) * | 1981-11-05 | 1983-05-11 | Basf Ag, 6700 Ludwigshafen | Verfahren zur herstellung von nadelfoermigen, ferrimagnetischen eisenoxiden |
JPS5884407A (ja) * | 1981-11-13 | 1983-05-20 | Daikin Ind Ltd | 磁性微粒子の製造法 |
DE3516885A1 (de) * | 1985-05-10 | 1986-11-13 | Basf Ag, 6700 Ludwigshafen | Verfahren zur herstellung nadelfoermiger, kobalthaltiger ferrimagnetischer eisenoxide |
JPS62108738A (ja) * | 1985-11-08 | 1987-05-20 | Fuji Photo Film Co Ltd | 強磁性酸化鉄粉末の製造方法 |
DE3627133A1 (de) * | 1986-08-09 | 1988-02-11 | Basf Ag | Verfahren zur herstellung von nadelfoermigem, ferrimagnetischem eisenoxid |
JPS6369714A (ja) * | 1986-09-11 | 1988-03-29 | Showa Denko Kk | 強磁性酸化鉄粉の製造方法 |
JPS6369715A (ja) * | 1986-09-11 | 1988-03-29 | Showa Denko Kk | 強磁性酸化鉄粉の製造方法 |
DE68923544T2 (de) * | 1988-12-29 | 1996-03-28 | Toda Kogyo Corp | Magnetische Eisenoxydteilchen und Verfahren zu ihrer Herstellung. |
-
1993
- 1993-12-16 DE DE69305487T patent/DE69305487T2/de not_active Expired - Lifetime
- 1993-12-16 EP EP93120343A patent/EP0604849B1/de not_active Expired - Lifetime
- 1993-12-28 CN CN93115693A patent/CN1069779C/zh not_active Expired - Fee Related
- 1993-12-28 KR KR1019930030356A patent/KR100249538B1/ko not_active IP Right Cessation
-
1996
- 1996-04-22 US US08/635,540 patent/US5609789A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE69305487T2 (de) | 1997-03-13 |
CN1069779C (zh) | 2001-08-15 |
EP0604849A3 (de) | 1995-03-15 |
EP0604849A2 (de) | 1994-07-06 |
CN1090085A (zh) | 1994-07-27 |
US5609789A (en) | 1997-03-11 |
KR940014159A (ko) | 1994-07-16 |
EP0604849B1 (de) | 1996-10-16 |
KR100249538B1 (ko) | 2000-03-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition |