Patent ID: 9177585
Filing Date: 2015-11-03
Classification: G11B

Abstract:
1. A magnetic recording media usable in a heat assisted magnetic recording (HAMR) disk drive, the magnetic recording comprising: a magnetic recording layer for storing magnetic data; a crystalline underlayer having a first crystal structure, the crystalline underlayer including at least one of CrMo, CrV, Cr, MoTa, MoW, MoV, CrW, Mo and RuAl and being a single layer; an orientation control layer between the magnetic recording layer and the crystalline underlayer, the crystalline underlayer having a first lattice parameter, the orientation control layer having a second lattice parameter that differs from the first lattice parameter by not more than ten percent; and a crystalline heat sink layer having a second crystal structure, the crystalline underlayer being between the crystalline heat sink layer and the magnetic recording layer, the crystalline heat sink layer consisting of at least one of Au, V, Cr, Nb and Ru; wherein the crystalline underlayer adjoins and shares a first interface with the crystalline heat sink layer and wherein the orientation control layer adjoins and shares a second interface with the crystalline underlayer.