原始名称记载: Western Digital Technologies, Inc.

Various apparatuses, systems, methods, and media are disclosed to provide a heat-assisted magnetic recording (HAMR) medium having small recording grain sizes with high aspect ratio. One example magnetic recording medium includes, a substrate, a heat sink layer on the substrate, an underlayer comprising MgO—TiO on the heat sink layer, an interfacial layer comprising TiN on the underlayer, a first nucleation layer on the interfacial layer and comprising FePt—Ag—X, wherein X is an oxide, a second nucleation layer on the first nucleation layer and comprising FePt—Ag—Y, wherein Y is an oxide or a nitride, and a magnetic recording layer on the second nucleation layer. In another example, the TiN is formed as a part of the underlayer rather than in the interfacial layer.

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.

An upstream spoiler for a hard disk drive (HDD) includes a top fin configured to cover a radial gap between the top fin and a top disk medium of an HDD to inhibit gas/air flow to a top surface of the top disk through the gap. The spoiler may further include a middle fin adjacent the top fin and a mounting structure configured for mounting the spoiler in an HDD, where the top fin extends circumferentially in an upstream direction beyond the middle fin and tapers down toward the mounting structure, thereby inhibiting particulates from entering a space between an HDD cover and the top disk.

An oxygenating system for treating an atmosphere of a magnetic storage device can include an oxygenating material inside a sealed casing of the magnetic storage device and comprising an oxygenated salen of formula (I): where M can be a metal selected from Co, Ni, Mn, Fe or Cu, and R1, R2, R3, R4, R5, R6, R7 and R8 are independently substitutions on aromatic and ethylene diamine portions such as, but not limited to, H, F, Cl, Br, I, carbonyl, carboxyl, hydroxyl, alkyl, aryl, amine, amide, nitro, or other typical electron withdrawing groups or electron donating groups.