Patent ID: 9047905
Filing Date: 2015-06-02
Classification: C23C,G11B

Abstract:
1. A method of manufacturing a recording medium, comprising: forming a magnetic layer on a substrate; forming an underlayer on the magnetic layer, the underlayer comprising a material selected from the group consisting of silicon, silicon carbide and germanium, a thickness of the underlayer being 0.3 nm or greater and 1.8 nm or less, and forming a carbon layer comprising amorphous carbon containing hydrogen on the underlayer, an amount of hydrogen included in the carbon layer being 24.7 at % or higher and 46.8 at % or lower, and a thickness of the carbon layer being 0.2 nm or greater and 1.7 nm or less wherein the carbon layer is formed by ECWR with an output power of 190 W to 1050 W and a pressure of 0.09 Pa to 0.35 Pa wherein either an ECWR plasma source was used with an output power of 1050 W and a pressure of 0.09 Pa applied to deposit an carbon layer with a targeted hydrogen content of 30 at % or an ECWR plasma source was used with an output power of 190 W and a pressure of 0.35 Pa applied to deposit a carbon layer with a targeted hydrogen content of 45 at %.