| 摘要 |
PURPOSE:To provide a recording medium which has an excellent noise characteristic and is adequate for high-density magnetic recording with a magnetic recording medium having a magnetic metallic film on a nonmagnetic base by forming the magnetic film having the specific compsn. formula essentially consisting of Co, Ni and Cr. CONSTITUTION:The thin metallic film having the compsn. expressed by the formula is formed as the magnetic film. In the formula, (a), (b), (c) respectively denote atomic %, and 3<=a<=40, 2<=b<=10, 2<=c<=7. The magnetic Co-Ni-Cr-P alloy film having the compsn. expressed by the formula has the excellent magnetic properties intrinsic to the magnetic Co-Ni alloy film nearly as they are and has also the noise characteristic superior to the noise characteristic of the magnetic Co-Ni alloy in combination. This noise characteristic is not obtainable with the Co-Ni alloy added with Cr or P alone and is obtdly only with the alloy added with Cr and P in combination. The recording at a high density is thereby enabled. |
