MAGNETIC RECORDING MEDIA WITH NI-PT SEED LAYER
Dossier Overview
Applicant
Western Digital Technologies, Inc.
Inventor
Yari Ferrante
IPC Classification
CPC Classification
A magnetic recording medium is described that includes a substrate and an amorphous soft underlayer (SUL). An Ni—Pt seed layer is formed on the SUL where the Pt atoms have substitutionally replaced at least some of the Ni atoms within an Ni lattice structure of the Ni—Pt to form a solid solution of Ni—Pt. In some examples, the Ni—Pt seed layer is formed of NiPt. An Ru interlayer is formed on the seed layer. In some examples, the Ni—Pt seed layer has a lattice mismatch with the Ru interlayer of 0.4% or less. A magnetic recording layer is formed on the Ru interlayer. Additional layers or films may be provided. The medium may be configured for use with perpendicular magnetic recording (PMR). A data storage device that includes the magnetic recording medium is described. Methods for fabricating the magnetic recording medium are set forth herein as well.
Original (Chinese)
A magnetic recording medium is described that includes a substrate and an amorphous soft underlayer (SUL). An Ni—Pt seed layer is formed on the SUL where the Pt atoms have substitutionally replaced at least some of the Ni atoms within an Ni lattice structure of the Ni—Pt to form a solid solution of Ni—Pt. In some examples, the Ni—Pt seed layer is formed of NiPt. An Ru interlayer is formed on the seed layer. In some examples, the Ni—Pt seed layer has a lattice mismatch with the Ru interlayer of 0.4% or less. A magnetic recording layer is formed on the Ru interlayer. Additional layers or films may be provided. The medium may be configured for use with perpendicular magnetic recording (PMR). A data storage device that includes the magnetic recording medium is described. Methods for fabricating the magnetic recording medium are set forth herein as well.
External Resources