JPS6423445A - Magneto-optical recording medium - Google Patents
Magneto-optical recording mediumInfo
- Publication number
- JPS6423445A JPS6423445A JP18065687A JP18065687A JPS6423445A JP S6423445 A JPS6423445 A JP S6423445A JP 18065687 A JP18065687 A JP 18065687A JP 18065687 A JP18065687 A JP 18065687A JP S6423445 A JPS6423445 A JP S6423445A
- Authority
- JP
- Japan
- Prior art keywords
- magneto
- film
- increases
- reproduction
- recording medium
- 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
- 229910020781 SixOy Inorganic materials 0.000 abstract 2
- 229910052692 Dysprosium Inorganic materials 0.000 abstract 1
- 229910052688 Gadolinium Inorganic materials 0.000 abstract 1
- 230000007423 decrease Effects 0.000 abstract 1
- 239000011521 glass Substances 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 230000001681 protective effect Effects 0.000 abstract 1
- 229910052761 rare earth metal Inorganic materials 0.000 abstract 1
- 150000002910 rare earth metals Chemical class 0.000 abstract 1
- 239000000758 substrate Substances 0.000 abstract 1
- 229910052723 transition metal Inorganic materials 0.000 abstract 1
- 150000003624 transition metals Chemical class 0.000 abstract 1
Landscapes
- Thin Magnetic Films (AREA)
Abstract
PURPOSE:To obtain a magneto-optical recording medium which is adequate for recording and reproduction at a high speed without using costly Tb by using the combined body of TdDyFeCo of a prescribed compsn. at the time of combining transition metals (Fe, Co) and rare earth metals (Tg, Gd, Dy...) and forming an amorphous magnetic film. CONSTITUTION:This combined body is expressed by the general formula (GdxDy1-x)z(FeyCo1-y)1-z, where 0.3<x<0.5, 0.25<z<0.35, 0.75<y<1.0. Gd increases a Kerr rotating angle thetak, Dy decreases a Curie temp. TC or increases HC, Co increases thetak as well; these elements act respectively effectively on the perpendicularly magnetized film. A laminate 3 adequately selected with the compsn. of prescribed DgDyFeCo is superposed via an underlying SixOy film 2 on a glass substrate 1 and is coated with a protective SixOy film 4, by which the magneto-optical disk is obtd. This disk is capable of making recording and reproduction at a high line speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18065687A JPS6423445A (en) | 1987-07-17 | 1987-07-17 | Magneto-optical recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18065687A JPS6423445A (en) | 1987-07-17 | 1987-07-17 | Magneto-optical recording medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6423445A true JPS6423445A (en) | 1989-01-26 |
Family
ID=16087015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18065687A Pending JPS6423445A (en) | 1987-07-17 | 1987-07-17 | Magneto-optical recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6423445A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60251540A (en) * | 1984-05-26 | 1985-12-12 | Ricoh Co Ltd | Amorphous magnetooptic layer |
-
1987
- 1987-07-17 JP JP18065687A patent/JPS6423445A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60251540A (en) * | 1984-05-26 | 1985-12-12 | Ricoh Co Ltd | Amorphous magnetooptic layer |
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