JPS6450237A - Production of perpendicular magnetic recording medium - Google Patents
Production of perpendicular magnetic recording mediumInfo
- Publication number
- JPS6450237A JPS6450237A JP20754487A JP20754487A JPS6450237A JP S6450237 A JPS6450237 A JP S6450237A JP 20754487 A JP20754487 A JP 20754487A JP 20754487 A JP20754487 A JP 20754487A JP S6450237 A JPS6450237 A JP S6450237A
- Authority
- JP
- Japan
- Prior art keywords
- film
- evaporation source
- nonmagnetic base
- compsn
- perpendicularly magnetized
- 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)
Abstract
PURPOSE:To obtain large reproduction output by disposing a Co evaporation source and Cr evaporation source in the direction approximately orthogonal with the traveling direction of a nonmagnetic base at the time of forming a perpendicularly magnetized Co-Cr film. CONSTITUTION:The Co evaporation source 6 and the Cr evaporation source 7 are disposed in the direction approximately orthogonal with the traveling direction of the nonmagnetic base 1 at the time of forming the perpendicularly magnetized Co-Cr film on the long-sized nonmagnetic base 1 by a two-sources vapor deposition method while running the nonmagnetic base 1. The perpendicularly magnetized Co-Cr film to be formed is made of the compsn. which is consistent in the thickness direction of the magnetized film. The magnetic film having no change in the compsn. is thus formed. Since there is no change in the compsn. over the entire part of the magnetic film, the saturation magnetization Ms and coercive force Hc in the perpendicular direction can be uniformized in the thickness direction of the perpendicularly magnetized film. The large reproduction output is thereby obtd. as the entire part of the perpendicular magnetic film contributes to effectively to the reproduction output.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20754487A JPS6450237A (en) | 1987-08-21 | 1987-08-21 | Production of perpendicular magnetic recording medium |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20754487A JPS6450237A (en) | 1987-08-21 | 1987-08-21 | Production of perpendicular magnetic recording medium |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6450237A true JPS6450237A (en) | 1989-02-27 |
Family
ID=16541487
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP20754487A Pending JPS6450237A (en) | 1987-08-21 | 1987-08-21 | Production of perpendicular magnetic recording medium |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6450237A (en) |
-
1987
- 1987-08-21 JP JP20754487A patent/JPS6450237A/en active Pending
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