| abstract |
A magnetic recording medium is provided comprising a non-magnetic support and at least one magnetic layer, the ferromagnetic metal particles mainly containing iron and having a spindle shape with an average major axis length of 0.15 µm or less and a binder resin, and optionally additionally comprising at least one adhesion promoter layer or a non-magnetic layer, which mainly contains a non-magnetic inorganic powder and a binder, between the support and the magnetic layer, the average center line roughness Ra of the surface of the magnetic layer being 2 to 6 nm and where the recording medium has the following properties: Steel ball wear at 23 ° C. and 70% relative humidity 2 È 10 · -5 · to 4 È 10 · -5 · mm · 3 ·, surface C / Fe ratio, measured by Auger electron spectroscopy, 50 to 100, coefficient of friction between the O surface of the magnetic layer and an SUS rod, which has a roughness of 8 to 10 nm, 0.2 to 0.3. |