| 摘要 |
The present invention relates to a magnetic recording medium for vertical recording of the type comprising a substrate (1), an intermediate layer (2) formed on the substrate and a magnetisable layer (3) formed on the intermediate layer. <??>A medium according to the invention is characterised in that the intermediate layer (2) comprises a first constituent of an element selected from the group consisting of tungsten (W), molybdenum (Mo), niobium (Nb), titanium (Ti), vanadium (V), iridium (Ir) and zirconium (Zr), and a second constituent consisting of either cobalt (Co), chromium (Cr), or a solid substitutional solution alloy of CoCr, wherein the amounts of the first and second constituents are present in a fixed stoichometric ratio so as to form an intermetallic compound with a hexagonal crystalline structure, and the magnetisable layer (3) comprises a ternary alloy of the form (Co100-yCry)X, wherein y is approximately in the range of 14 to 22 and wherein X is selected from the group consisting of W, Mo, Nb, Ti and V, and has an hexagonal crystalline structure with its C-axis oriented generally perpendicular to said substrate (1). <??>The hexagonal cell constants of the intermediate layer (2) and the magnetisable layer (3) are related by approximately integral multiples whereby the hexagonal crystalline orientation of the magnetisable layer (3) is enhanced. |
