JPH0252416B2 - - Google Patents
Info
- Publication number
- JPH0252416B2 JPH0252416B2 JP56110903A JP11090381A JPH0252416B2 JP H0252416 B2 JPH0252416 B2 JP H0252416B2 JP 56110903 A JP56110903 A JP 56110903A JP 11090381 A JP11090381 A JP 11090381A JP H0252416 B2 JPH0252416 B2 JP H0252416B2
- Authority
- JP
- Japan
- Prior art keywords
- salt
- recording
- recording medium
- magnetization
- magnetic
- 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
- 239000002243 precursor Substances 0.000 claims description 11
- 230000005484 gravity Effects 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 7
- 239000007864 aqueous solution Substances 0.000 claims description 4
- 150000003839 salts Chemical class 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 159000000009 barium salts Chemical class 0.000 claims description 2
- 159000000007 calcium salts Chemical class 0.000 claims description 2
- 150000001868 cobalt Chemical class 0.000 claims description 2
- 239000006247 magnetic powder Substances 0.000 claims description 2
- 159000000008 strontium salts Chemical class 0.000 claims description 2
- 150000001447 alkali salts Chemical class 0.000 claims 1
- 239000011259 mixed solution Substances 0.000 claims 1
- 230000005415 magnetization Effects 0.000 description 14
- 229910000859 α-Fe Inorganic materials 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 239000010419 fine particle Substances 0.000 description 6
- 239000000843 powder Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000006467 substitution reaction Methods 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 229910020517 Co—Ti Inorganic materials 0.000 description 1
- 229910000599 Cr alloy Inorganic materials 0.000 description 1
- -1 Ti salts Chemical class 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000001027 hydrothermal synthesis Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Classifications
-
- 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
Landscapes
- Compounds Of Iron (AREA)
- Paints Or Removers (AREA)
- Magnetic Record Carriers (AREA)
- Hard Magnetic Materials (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56110903A JPS5814508A (ja) | 1981-07-17 | 1981-07-17 | 高密度記録用磁性粉の製造方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56110903A JPS5814508A (ja) | 1981-07-17 | 1981-07-17 | 高密度記録用磁性粉の製造方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5814508A JPS5814508A (ja) | 1983-01-27 |
| JPH0252416B2 true JPH0252416B2 (fr) | 1990-11-13 |
Family
ID=14547585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56110903A Granted JPS5814508A (ja) | 1981-07-17 | 1981-07-17 | 高密度記録用磁性粉の製造方法 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5814508A (fr) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6132324A (ja) * | 1984-07-20 | 1986-02-15 | 富士電機株式会社 | 配線用遮断器の内部付属装置取付構造 |
| JPS6355122A (ja) * | 1986-08-22 | 1988-03-09 | Toshiba Glass Co Ltd | 磁性粉末 |
-
1981
- 1981-07-17 JP JP56110903A patent/JPS5814508A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5814508A (ja) | 1983-01-27 |
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