MAGNETIC RECORDING MEDIUM

摘要

[PROBLEMS] To provide a magnetic recording medium having excellent electromagnetic conversion characteristics. [MEANS FOR SOLVING PROBLEMS] A magnetic recording medium (10) is provided with a substrate (12), and a magnetic recording layer (20) formed on the substrate (12). The magnetic recording layer (20) is provided with a granular layer (32), i.e., a magnetic layer, including magnetic particles and a nonmagnetic material surrounding the magnetic particles in a cross-section parallel to the main surface of the substrate. The ratio of the long diameter to the short diameter of each magnetic particle contained in the granular layer (32) is calculated in the cross-section. In the histogram of such ratio, a half width at half maximum of the histogram is 0.6 or less and dispersion of the magnetic particles in the cross-section is 20% or less of the average grain diameter of the magnetic particles.