Magnetic recording system and magnetic recording medium used therefor

摘要

A magnetic recording system high in S/N and low in bit error rate, capable of carrying out writing and reading of high recording density of at least 1 gigabit per 6.451 cm<2> (1 square inch) and high in reliability can be realized by making the magnetic layer (103) of the magnetic recording medium (71) from a mixture comprising at least one non-magnetic compound selected from the group consisting of oxides and nitrides and a magnetic material comprising Co and Pt as main components and specifying the molar ratio of Pt to Co in the magnetic layer, and employing a magnetoresistive read back magnetic recording head.