DERPENDICULAR MAGNETIC RECORDING MEDIUM

摘要

The recording medium has an underlayer made of a material containing Si and has Ge as its principal ingredient deposited on a substrate. A perpendicular magnetic film made of a Co-based alloy is deposited on the underlayer. With the perpendicular magnetic recording medium, the perpednicular magnetic film has an enhanced degree of C-axis orientation, and the bond strength between the perpendicular magnetic film and the substrate is also enhanced when the substrate is non- metallic. The thickness of the underlayer is at least 100 angstroms and at most 1 micron. Ths Si and Ge are added in such a range of amount that any structure other than diamond and amorphous do not appear in crystal.