This magnetic recording medium is furnished with a substrate, a function layer which is greater in the saturation magnetization at a recording temperature by local heating than the saturation magnetization at room temperature and a magnetic recording layer which is greater in a magnetic anisotropic energy density KuRL at room temperature than the magnetic anisotropic energy density KuFL at room temperature of the above function layer and is ≥5×10^6 erg/cc. 基板と、局所加熱による記録温度における飽和磁化が室温における飽和磁化よりも大きい機能層と、室温における磁気異方性エネルギー密度Ku_R_Lが、前記機能層の室温における磁気異方性エネルギー密度Ku_FLよりも大きく、かつ5×10^6erg/cc以上である磁気記録層とを具備した磁気記録媒体。 - 特許庁