JPS5449105A - Production of magnetic recording media of magnetic thin- films of oxides - Google Patents
Production of magnetic recording media of magnetic thin- films of oxidesInfo
- Publication number
- JPS5449105A JPS5449105A JP11583577A JP11583577A JPS5449105A JP S5449105 A JPS5449105 A JP S5449105A JP 11583577 A JP11583577 A JP 11583577A JP 11583577 A JP11583577 A JP 11583577A JP S5449105 A JPS5449105 A JP S5449105A
- Authority
- JP
- Japan
- Prior art keywords
- film
- magnetic thin
- magnetic
- heat
- oxides
- 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
Landscapes
- Manufacturing Of Magnetic Record Carriers (AREA)
- Thin Magnetic Films (AREA)
- Magnetic Record Carriers (AREA)
Abstract
PURPOSE: To suppress the change in the coercive force of the Fe3O4-ϒ-Fe2O3 base magnetic thin-film medium by heat-treating said medium at specific temperatures.
CONSTITUTION: The Fe3O4-ϒ-Fe2O3 base continuous magnetic thin-film in which magnetic is slow oxidized or the oxide magnetic thin-film added with a dissimilar metal element such as Co is heat-treated at temperatures of 30 to 130°C, particularly 40 to 90°C, in an inert gas, in a vacuum or in air. Thereby, the increase in the coercive force which will require a long period of time when the film is left standing at room temperature is acceleratively progressed in a short time through heat treatment, and the subsequent change with time is thereby suppressed and stable recording-repoducing characteristics may be obtained
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11583577A JPS5449105A (en) | 1977-09-26 | 1977-09-26 | Production of magnetic recording media of magnetic thin- films of oxides |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11583577A JPS5449105A (en) | 1977-09-26 | 1977-09-26 | Production of magnetic recording media of magnetic thin- films of oxides |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5449105A true JPS5449105A (en) | 1979-04-18 |
Family
ID=14672288
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11583577A Pending JPS5449105A (en) | 1977-09-26 | 1977-09-26 | Production of magnetic recording media of magnetic thin- films of oxides |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5449105A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59119530A (en) * | 1982-12-27 | 1984-07-10 | Mitsubishi Metal Corp | Magnetic recording medium for vertical magnetization recording |
-
1977
- 1977-09-26 JP JP11583577A patent/JPS5449105A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59119530A (en) * | 1982-12-27 | 1984-07-10 | Mitsubishi Metal Corp | Magnetic recording medium for vertical magnetization recording |
JPS6224850B2 (en) * | 1982-12-27 | 1987-05-30 | Mitsubishi Metal Corp |
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