MAGNETIC RECORDING MEDIUM

摘要

A magnetic recording medium suitable for high-density recording, which comprises a magnetic layer containing uniaxial anisotropic, acicular iron oxide particles having a particle size of not more than 0.3 mu , with a surface layer containing a major amount of cobalt being formed on seeds of the magnetic particles, said magnetic recording medium having a residual magnetic flux density both in a vertical direction and in a horizontal or longitudinal direction of not less than 1000 gauss.