Heat assisted magnetic recording media with amorphous magnetic grain boundary material

A method for fabricating a magnetic recording medium for heat assisted magnetic recording, the method comprising:

• providing a substrate;
• providing a heat sink layer on the substrate;
• and
• providing a magnetic recording layer on the heat sink layer, the magnetic recording layer comprising:
• a plurality of magnetic recording grains configured for recording data and comprising a first magnetic alloy;
• and
• a plurality of segregants interleaved with the plurality of magnetic recording grains and comprising a second magnetic alloy, wherein a Curie temperature of the second magnetic alloy is higher than a Curie temperature of the first magnetic alloy, and
• wherein the second magnetic alloy comprises Fe2B.

A magnetic recording medium for heat assisted magnetic recording, the medium comprising:

• a substrate;
• a heat sink layer on the substrate;
• and
• a plurality of magnetic recording layers on the heat sink layer and comprising:
• a first magnetic layer comprising FePtAg;
• a second magnetic layer on the first magnetic layer and comprising FePtAgCuC;
• a third magnetic layer on the second magnetic layer and comprising FePtCBN;
• and
• a fourth magnetic layer on the third magnetic layer and comprising FePtSiO2BN, wherein the fourth magnetic layer comprises magnetic recording grains interleaved with magnetic segregants comprising a magnetic alloy different from a magnetic alloy of the magnetic recording grains.