JPS56114833A - Production of fine particle of iron compound for magnetic recording - Google Patents
Production of fine particle of iron compound for magnetic recordingInfo
- Publication number
- JPS56114833A JPS56114833A JP1357480A JP1357480A JPS56114833A JP S56114833 A JPS56114833 A JP S56114833A JP 1357480 A JP1357480 A JP 1357480A JP 1357480 A JP1357480 A JP 1357480A JP S56114833 A JPS56114833 A JP S56114833A
- Authority
- JP
- Japan
- Prior art keywords
- iron
- particles
- production
- phosphorus
- fine
- 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.)
- Granted
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
- H01F1/04—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 metals or alloys
- H01F1/06—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 metals or alloys in the form of particles, e.g. powder
- H01F1/065—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 metals or alloys in the form of particles, e.g. powder obtained by a reduction
-
- 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
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1357480A JPS56114833A (en) | 1980-02-08 | 1980-02-08 | Production of fine particle of iron compound for magnetic recording |
GB8103359A GB2068923B (en) | 1980-02-08 | 1981-02-04 | Process for the preparation of iron compound fine particles for use in magnetic recording |
DE19813104214 DE3104214A1 (de) | 1980-02-08 | 1981-02-06 | "verfahren zur herstellung von feinteilchen aus einer eisenverbindung zur verwendung bei der magnetischen aufzeichnung" |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1357480A JPS56114833A (en) | 1980-02-08 | 1980-02-08 | Production of fine particle of iron compound for magnetic recording |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56114833A true JPS56114833A (en) | 1981-09-09 |
JPS6313934B2 JPS6313934B2 (ja) | 1988-03-28 |
Family
ID=11836932
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1357480A Granted JPS56114833A (en) | 1980-02-08 | 1980-02-08 | Production of fine particle of iron compound for magnetic recording |
Country Status (3)
Country | Link |
---|---|
JP (1) | JPS56114833A (ja) |
DE (1) | DE3104214A1 (ja) |
GB (1) | GB2068923B (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55149138A (en) * | 1979-05-11 | 1980-11-20 | Tdk Corp | Iron oxide hydrate containing silicon and phosphorus, and its manufacture |
JPS6265307A (ja) * | 1985-09-14 | 1987-03-24 | Mitsui Toatsu Chem Inc | 磁性鉄粉の製造方法 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4213061A1 (de) * | 1992-04-21 | 1993-10-28 | Basf Magnetics Gmbh | Verfahren zur Herstellung von nadelförmigem Gamma-Eisen(III)oxid |
JPH10101339A (ja) * | 1996-09-27 | 1998-04-21 | Titan Kogyo Kk | マグネタイト粒子粉末及びその製造方法並びにその応用 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54137696A (en) * | 1978-04-12 | 1979-10-25 | Bayer Ag | Iron oxide grain for recording magnetism and its preparation |
JPS5613411A (en) * | 1979-07-16 | 1981-02-09 | Kawasaki Steel Corp | Manufacture of magnetic powder of metallic iron |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE792847A (fr) * | 1971-12-17 | 1973-06-15 | Bayer Ag | Procede de preparation d'oxydes de fer magnetiques aciculaires |
DE2801395C2 (de) * | 1978-01-13 | 1982-04-22 | Bayer Ag, 5090 Leverkusen | Thermisch stabilisiertes ferrimagnetisches Eisenoxid |
DE2909995C2 (de) * | 1978-03-16 | 1984-06-28 | Kanto Denka Kogyo Co., Ltd., Tokyo | Verfahren zur Herstellung eines Magnetpulvers |
-
1980
- 1980-02-08 JP JP1357480A patent/JPS56114833A/ja active Granted
-
1981
- 1981-02-04 GB GB8103359A patent/GB2068923B/en not_active Expired
- 1981-02-06 DE DE19813104214 patent/DE3104214A1/de active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54137696A (en) * | 1978-04-12 | 1979-10-25 | Bayer Ag | Iron oxide grain for recording magnetism and its preparation |
JPS5613411A (en) * | 1979-07-16 | 1981-02-09 | Kawasaki Steel Corp | Manufacture of magnetic powder of metallic iron |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55149138A (en) * | 1979-05-11 | 1980-11-20 | Tdk Corp | Iron oxide hydrate containing silicon and phosphorus, and its manufacture |
JPS6132256B2 (ja) * | 1979-05-11 | 1986-07-25 | Tdk Electronics Co Ltd | |
JPS6265307A (ja) * | 1985-09-14 | 1987-03-24 | Mitsui Toatsu Chem Inc | 磁性鉄粉の製造方法 |
Also Published As
Publication number | Publication date |
---|---|
DE3104214C2 (ja) | 1991-07-18 |
DE3104214A1 (de) | 1981-11-26 |
GB2068923A (en) | 1981-08-19 |
GB2068923B (en) | 1984-05-02 |
JPS6313934B2 (ja) | 1988-03-28 |
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