VERTICAL MAGNETIC RECORDING MEDIUM

摘要

A nonmagnetic second orientation control layer (37) spreading on the surface of a magnetic first orientation control layer (36) is composed of crystal grains contiguous to each other. A recording magnetic layer (38) spreading on the surface of the second orientation control layer (37) is composed of crystal grains growing from individual crystal grains of the second orientation control layer (37). Crystal orientation of the recording magnetic layer (38) is arranged sufficiently through action of the first and second orientation control layers (36, 37). Crystal orientation can be controlled surely by the recording magnetic layer (38) as compared with a case where only the nonmagnetic second orientation control layer (37) having the same film thickness is employed. Furthermore, film thickness of the second orientation control layer (37) can be reduced through action of the first orientation control layer (36). Sufficient orientation can be established in the recording magnetic layer (38) regardless of a reduction in the film thickness of the second orientation control layer (37) and high electromagnetic conversion characteristics can be attained.