JPS6478430A - Magnetic disk and its manufacture - Google Patents
Magnetic disk and its manufactureInfo
- Publication number
- JPS6478430A JPS6478430A JP23593087A JP23593087A JPS6478430A JP S6478430 A JPS6478430 A JP S6478430A JP 23593087 A JP23593087 A JP 23593087A JP 23593087 A JP23593087 A JP 23593087A JP S6478430 A JPS6478430 A JP S6478430A
- Authority
- JP
- Japan
- Prior art keywords
- ferromagnetic material
- substrate
- disk substrate
- ferromagnetic
- aggregate
- 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
- Magnetic Record Carriers (AREA)
- Manufacturing Of Magnetic Record Carriers (AREA)
Abstract
PURPOSE:To obtain a stable coercive force by providing a ferromagnetic metal thin film layer consisting of the aggregate of specified ferromagnetic material prismatic particles on a substrate while the disk substrate is rotated at high speed. CONSTITUTION:When the steam current of the ferromagnetic material 6 which has been heated and evaporated in a ferromagnetic material evaporation source 5 is sent to the disk substrate 4 while the disk substrate 4 is rotated at high speed by a driving motor 3 under a vacuum atmosphere, the ferromagnetic metal thin film layer 10 consisting of the aggregate of the ferromagnetic material prismatic particles 9 inclined from the normal direction of the substrate 4 to a peripheral direction is formed. Thus, the incident angle of a ferromagnetic material steam with respect to the substrate 4 becomes relatively large, and a self shadowing effect similar to oblique evaporation is displayed, whereby the coercive force is considerably improved.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23593087A JPS6478430A (en) | 1987-09-18 | 1987-09-18 | Magnetic disk and its manufacture |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23593087A JPS6478430A (en) | 1987-09-18 | 1987-09-18 | Magnetic disk and its manufacture |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6478430A true JPS6478430A (en) | 1989-03-23 |
Family
ID=16993339
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP23593087A Pending JPS6478430A (en) | 1987-09-18 | 1987-09-18 | Magnetic disk and its manufacture |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6478430A (en) |
-
1987
- 1987-09-18 JP JP23593087A patent/JPS6478430A/en active Pending
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