Patent ID: 6756113
Filing Date: 2004-06-29
Classification: G11B,Y10S,Y10T

Abstract:
A magnetic recording medium including a first underlying film formed on a nonmagnetic substrate and containing a NiTa alloy having a nonmagnetic amorphous structure, and a second underlying film using an alloy containing at least Cr and Ti, further a first magnetic film using a CoCrPt alloy, a nonmagnetic intermediate film containing Ru and a second magnetic film using a CoCrPtB alloy that are serially formed over said first underlying layer, wherein oxygen exists in an interface between said first underlying film and said second underlying film; andwherein a film thickness of said second underlying film is 5 nm to 15 nm, and a half value width of a locking curve in a (11.0) diffraction peak appearing at an overlapping position of said first and second magnetic films is equal to or less than 80.