Magnetic recording medium

摘要

A metal thin film magnetic recording medium having improved S/N and reduced noise is disclosed, which has a ferromagnetic metal thin film composed mainly of Co on a non-magnetic support, characterized in that the crystallite size as determined from the thin film X-ray diffraction method is 45 ANGSTROM (angstrom) or less relative to the (100) face of alpha -Co, and 120 ANGSTROM or less relative to the (002) face of alpha -Co.