| 摘要 |
A magnetic recording medium having a substrate, a granular magnetic layer and a magnetic cap layer covered with carbon overcoat, in this order, wherein both the granular magnetic and magnetic cap layers contain magnetic grains and non-magnetic grain boundaries, and further wherein the magnetic cap layer has denser grain boundaries and the magnetic cap layer contains substantially no oxide is disclosed. The magnetic cap layer serves as both magnetic layer and corrosion barrier for lower HMS.
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