Magnetic recording medium

摘要

A magnetic recording medium comprising alumite made by anodic oxidation of aluminum or an aluminum alloy and comprising fine pores in which a ferromagnetic material is filled, wherein an in-plane remanence is at least 2.5 times greater than a perpendicular remanence and a magnetic recording medium of the above alumite, wherein the magnetic material is at least one material selected from the group consisting of Fe or Co, alloy mainly composed of Fe or Co, an Co or Fe containing a P element, and an alloy mainly composed of Co or Fe and containing the P element.