MAGNETO-OPTICAL RECORDING MEDIUM AND MAGNETO-OPTICAL RECORDING MEDIUM SUBSTRATE MANUFACTURING METHOD

摘要

A magneto-optical recording medium (X1) includes a substrate (S1) and a material film structure section. The substrate (S1) has a pre-groove surface (11a) where a pre-groove (11b) is formed. At least the pre-groove surface (11a) is made from a soft magnetic material. The material film structure section includes a recording magnetic section (21) having a recording function and a reproduction function and is arranged on the pre-groove surface (11a) of the substrate (S1).