| 摘要 |
A magnetic recording medium includes a nonmagnetic support; and a magnetic layer that comprises a binder and ferromagnetic powder dispersed in the binder, wherein delta is 10 to 100 nm; and sigma<SUB>d </SUB>is from 5 to 50 nm in terms of coating layer in the magnetic recording medium, wherein delta represents an average thickness of the magnetic layer; and sigma<SUB>d </SUB>represents a standard deviation that is obtained by measuring by TOF-SIMS a depth profile of an element present only in the magnetic layer among elements constituting the ferromagnetic powder and subjecting a differential curve of the depth profile to a normal distribution curve fitting.
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