Patent ID: 8883249
Filing Date: 2014-11-11
Classification: C23C,G11B,H01F

Abstract:
1. A method of manufacturing a perpendicular magnetic recording medium, the method comprising: a main recording layer forming step of forming, on a substrate, at least a main recording layer formed of magnetic particles having a CoCrPt alloy as a main component and a non-magnetic grain boundary part having an oxide as a main component; a split layer forming step of forming a split layer having a Ru alloy as a main component on the main recording layer; a first heating step of performing a heat treatment on the substrate after the split layer forming step; an auxiliary recording layer forming step of forming on the split layer an auxiliary recording layer formed of a material having CoCrPt as a main component after the first heating step; a second heating step of performing a heat treatment on the substrate after the auxiliary recording layer forming step; and a protective layer forming step of forming on the auxiliary layer a protective layer having carbon as a main component by chemical vapor deposition after the second heating step.