| 摘要 |
PURPOSE:To reduce considerably the dependency of a vertically magnetized Co- Cr layer on film thickness and to obtain a satisfactory electromagnetic conversion characteristic by composing a medium essentially of a base body and a thin magnetic film which consists essentially of cobalt and chromium formed on said base body and of which the coercive force in the direction parallel to the surface of the base body is of the oersted value in a limited range. CONSTITUTION:A magnetic recording medium consists of a base material and a thin magnetic film which consists essentially of cobalt and chromium formed on the thin magnetic film on said base material and of which the coercive force in the direction perpendicular to the surface of the base body is 200-2,000 oersted. The base body is enumerated by a metal as represented by aluminum, copper, iron or stainless steel, an inorg. material such as glass or ceramics and an org. polymer material such as a plastic film. The thin magnetic film (soft magnetic layer) formed on said base body refers to the film which consists essentially of cobalt and chromium and of which the coercive force in the direction parallel to the surface of the base body is 0.01-50 oersted. |
