MGO BASED SPUTTERING TARGET AND UNDERLAYER FOR CO-OR FE BASED MAGNETIC RECORDING MEDIA

摘要

A TARGET, AN UNDERLAYER MATERIAL FOR CO-BASED OR FE-BASED MAGNETIC RECORDING MEDIA, AND MAGNETIC RECORDING MEDIAThe present invention is related to a target, which is a magnesiummonoxide-based (MgO-based) composite having cubic crystal structure of MgO, wherein the Mg0-based composite includes MgO and one or more oxides. Using Mg0-based composite to form an underlayer material can improve the bonding strength among particles in the target, and then effectivelyreduce the falling of particles from the targets during sputtering. In addition, the MgO-based composite still maintains the cubic crystal structure of MgO, which is beneficial to make a MgO-based composites as an underlayer material in a magnetic recording medium. The invention is also related to an underlayer material for cobalt-based (Co-based) or iron-based (Fe-based) magneticrecording media. The invention is further related to a magnetic recording medium. [FIG. 3]