CPC G11B 5/71 (2013.01) [G11B 5/5928 (2013.01); G11B 5/70678 (2013.01); G11B 5/78 (2013.01)] | 20 Claims |
1. A magnetic recording medium with a tape shape comprising:
a substrate;
an underlayer provided on the substrate; and
a magnetic layer provided on the underlayer,
wherein the magnetic layer has a surface having an uneven shape,
a height range ΔH obtained from statistical information of a height of the uneven shape is in a range of 4.00 nm≤ΔH≤10.00 nm, and
a gradient range ΔA obtained from statistical information of a gradient of the uneven shape is in a range of 2.50 degrees ≤ΔA.
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