MAGNETIC RECORDING MEDIUM

摘要

PROBLEM TO BE SOLVED: To provide a magnetic recording medium having higher coercive force and improved thermal fluctuation resistance so as to be suitable for high density magnetic recording. SOLUTION: Ground surface layers 12 and 13 to be disposed at the lower layer of magnetic films of a Co alloy system are formed as multiple layers and more particularly an alloy material of Co-Rux-cry (5 at.% <=x<=65 at.%, 35 at.%>=y>=0 at.%) having a hexagonal closepacked structure is used as the upper layer ground surface layer 13 to be formed in contact with the magnetic film 14. As a result, the coercive force of the magnetic recording medium is made higher and the thermal fluctuation resistance thereof is made better. The magnetic recording medium having the characteristics necessary for high density magnetic recording above 10 Gb/in2 may be embodied.