Patent ID: 6846581

Claim:
A perpendicular magnetic recording medium, comprising: a nonmagnetic substrate; a longitudinal hard magnetic multi-layered film arranged on the nonmagnetic substrate, including at least, a nonmagnetic intermediate layer and two hard magnetic layers; a longitudinal soft magnetic layer formed on the longitudinal hard magnetic multi-layered film; and a perpendicular magnetic recording layer formed on the longitudinal soft magnetic layer, wherein the nonmagnetic intermediate layer and the two hard magnetic layers are laminated one hard magnetic layer upon the other hard magnetic layer in order from on the nonmagnetic substrate toward the longitudinal soft magnetic layer, with the nonmagnetic intermediate layer interposed between the two hard magnetic layers wherein said nonmagnetic layer has sufficient thickness to align the directions of magnetization of the two hard magnetic layers with the nonmagnetic layer interposed therebetween to be antiparallel.