MAGNETIC RECORDING MEDIA AND METHOD FOR MAKING THEM

摘要

A magnetic recording medium is used with a magnetic recording system in which a baseband recording signal is recorded on a magnetic recording medium and a surface-band recording signal with the effective recording depth being smaller than that of the baseband recording signal is then recorded thereon in superimposed relation. The non-magnetic substrate includes thereon a first magnetic layer and a second magnetic layer on that order, said second magnetic layer having a thickness substantially equal to the effective recording depth of said surface-band recording signal and a coercivity higher than that of said first magnetic layer.