| 摘要 |
A magnetic recording medium which comprises a non-magnetic substrate, a Cr undercoat layer formed on the substrate, and a quaternary alloy layer formed on the undercoat layer. The alloy layer consists of the following composition by atomic percent 1</=Cr</=18 2</=Ta</=9 73</=Co</=97 1</=Pt</=10 provided that the atomic percent of Cr, Ta and Co is 100 in total and the atomic percent of Pt is based on the total of Cr, Ta and Co. |
