Co alloy media made on amorphous carbon substrate

Abstract

Co-based alloy media were made on recently developed ultra densified amorphous carbon (UDAC) substrates which have several advantages over NiP/Al, glass, and ceramics substrates. It was found that the coercivity (Hc) of media made on UDAC substrates was higher than that on NiP/Al substrates, as was the adhesion performance. The latter is a result of the formation of Cr–C compound at the interface.