Patent ID: 7521136
Filing Date: 2009-04-21
Classification: G11B,Y10T

Abstract:
1. A magnetic recording medium, comprising a first CoCrPtB-containing layer, a second CoCrPtB-containing layer directly on the first CoCrPtB-containing layer, and a Co-containing layer, wherein the second CoCrPtB-containing layer and the Co-containing layer are separated by a non-magnetic interlayer and a magnetic interlayer, wherein the compositions of the first CoCrPtB-containing layer, the second CoCrPtB-containing layer and the Co-containing layer are different, the magnetic interlayer has a higher magnetic density than that of the first and second CoCrPtB-containing layers, wherein the Co-containing layer is sputter deposited in a reduced gas pressure relative to a conventional 6.1 mTorr pressure, resulting in the magnetic recording medium having a Jex 5-20% higher than a corresponding magnetic recording medium having a the Co-containing layer deposited in a conventional 6.1 mTorr pressure.