JPS57198534A - Magnetic recording medium - Google Patents
Magnetic recording mediumInfo
- Publication number
- JPS57198534A JPS57198534A JP56083031A JP8303181A JPS57198534A JP S57198534 A JPS57198534 A JP S57198534A JP 56083031 A JP56083031 A JP 56083031A JP 8303181 A JP8303181 A JP 8303181A JP S57198534 A JPS57198534 A JP S57198534A
- Authority
- JP
- Japan
- Prior art keywords
- film
- layer
- thickness
- recording medium
- metallic 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.)
- Pending
Links
- 239000010408 film Substances 0.000 abstract 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 2
- 229910052581 Si3N4 Inorganic materials 0.000 abstract 1
- -1 SiO2 Chemical class 0.000 abstract 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract 1
- 229910017052 cobalt Inorganic materials 0.000 abstract 1
- 239000010941 cobalt Substances 0.000 abstract 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 abstract 1
- 229910052681 coesite Inorganic materials 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 abstract 1
- 229910052906 cristobalite Inorganic materials 0.000 abstract 1
- 238000001704 evaporation Methods 0.000 abstract 1
- 230000008020 evaporation Effects 0.000 abstract 1
- 229910003465 moissanite Inorganic materials 0.000 abstract 1
- 229920006267 polyester film Polymers 0.000 abstract 1
- 229910052710 silicon Inorganic materials 0.000 abstract 1
- 239000010703 silicon Substances 0.000 abstract 1
- 229910010271 silicon carbide Inorganic materials 0.000 abstract 1
- 239000000377 silicon dioxide Substances 0.000 abstract 1
- 235000012239 silicon dioxide Nutrition 0.000 abstract 1
- 238000004544 sputter deposition Methods 0.000 abstract 1
- 229910052682 stishovite Inorganic materials 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 239000010409 thin film Substances 0.000 abstract 1
- 229910052905 tridymite Inorganic materials 0.000 abstract 1
- 238000001771 vacuum deposition Methods 0.000 abstract 1
- 238000007738 vacuum evaporation Methods 0.000 abstract 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
- G11B5/64—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent
Abstract
PURPOSE:To obtain a recording medium having a metallic magnetic substance film with high coercive force, by providing a continuous film of silicon type and a bismas layer in island shape on a support. CONSTITUTION:On a nonmagnetic support 1 such as polyester film or the like, a film of Si or compound such as SiO2, Si3N4 and SiC is formed with vacuum evaporation or sputtering to obtain an amorphous continuous film 2, having 50- 500Angstrom thickness. Further, a bismath layer 3 is formed on the film 2 with vaacuum evaporation in a discontinuous island film, having 10-1,000Angstrom average film thickness, and moreover, a metallic magnetic thin film 4 made of cobalt or the like is formed on the layer 3 with the vacuum deposition, of 100-1,000Angstrom thickness.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56083031A JPS57198534A (en) | 1981-05-29 | 1981-05-29 | Magnetic recording medium |
| CA000400530A CA1188796A (en) | 1981-04-14 | 1982-04-06 | Magnetic recording medium |
| DE19823213352 DE3213352A1 (en) | 1981-04-14 | 1982-04-08 | MAGNETIC RECORDING MEDIUM |
| GB8210807A GB2096647B (en) | 1981-04-14 | 1982-04-14 | Magnetic recording media |
| NL8201567A NL8201567A (en) | 1981-04-14 | 1982-04-14 | MAGNETIC RECORD MEDIUM. |
| FR8206428A FR2503909B1 (en) | 1981-04-14 | 1982-04-14 | MAGNETIC RECORDING MEANS |
| US06/540,707 US4539265A (en) | 1981-04-14 | 1983-10-11 | Magnetic recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56083031A JPS57198534A (en) | 1981-05-29 | 1981-05-29 | Magnetic recording medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57198534A true JPS57198534A (en) | 1982-12-06 |
Family
ID=13790856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56083031A Pending JPS57198534A (en) | 1981-04-14 | 1981-05-29 | Magnetic recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57198534A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6085417A (en) * | 1983-10-14 | 1985-05-14 | Matsushita Electric Ind Co Ltd | Thin film type magnetic recording medium |
-
1981
- 1981-05-29 JP JP56083031A patent/JPS57198534A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6085417A (en) * | 1983-10-14 | 1985-05-14 | Matsushita Electric Ind Co Ltd | Thin film type magnetic recording medium |
| JPH0547889B2 (en) * | 1983-10-14 | 1993-07-20 | Matsushita Electric Ind Co Ltd |
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