PERPENDICULAR MAGNETIC RECORDING MEDIUM INCLUDING SOFT-MAGNETIC-PARTICLES-MIXED PROTECTIVE LAYER ON TOP OF RECORDING LAYER AND MAGNETIC DISK DEVICE HAVING THE SAME

摘要

According to one embodiment, a perpendicular magnetic recording medium characterized by includes: a substrate; an undercoat layer formed on the substrate and made of a soft magnetic material; a recording layer formed on the undercoat layer and having an easy axis of magnetization in a direction that is approximately perpendicular to a surface of the perpendicular magnetic recording medium; and a protective layer which is formed on the recording layer and in which soft magnetic particles are mixed.