| 摘要 |
In a magnetic recording medium having a magnetic thin film formed on a nonmagnetic base film by vacuum evaporation, a noise can be reduced and hence a satisfactory error rate for the digital recording can be secured. A magnetic recording medium according to the present invention includes a nonmagnetic base film, and a magnetic layer formed on the nonmagnetic base film by oblique incident evaporation. A mean particle size a of a column grown on the nonmagnetic base film is set within the range of 10 nm</=a</=50 nm. A value sigma /a is set within the range of sigma /a</=0.4 where sigma is a dispersion value of a particle-size distribution of the column.
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