Data recording medium.

摘要

A data recording medium comprising, as a recording layer, a thin magnetic alloy film (2) having an axis of easy magnetization along a direction perpendicular to the surface thereof, and an anticorrosion protective layer (3) formed on the recording layer (2). This recording medium is featured in that the anticorrosion protective layer (3) is formed of a thin oxide film which is obtained by subjecting the surface portion of the recording layer (2) to an anodic oxidization. This protective layer (2) may be further covered with a dielectric film as a second protective covering.