| 摘要 |
A magnetic recording medium includes, in a main surface of a glass substrate (1G) on which a magnetic recording layer (20) is formed, a plurality of annular first thermally-conductive regions (101) having a larger thermal conductivity than the glass substrate (1G) that are provided concentrically with the glass substrate (1G). The first thermally-conductive regions (101) are each provided so that it extends across a plurality of tracks (T). The first thermally-conductive region (101) has a radial width (W) larger than a depth (H), from the main surface, of the first thermally-conductive region (101).
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