Abstract: In one embodiment, a multidentate perfluoropolyether (PFPE) lubricant has the formula Se-So-Si-SL-Si-So-Se, where each So includes at least one perfluoroethyl ether unit, SL is a linker segment, and each Se and Si include at least one functional group configured to attach to a surface. In another embodiment, a multi dentate PFPE lubricant has the formula Se-So(a)-Si-Sm-Si-So(b)-Se, where each So(a), So(b), and Sm include at least one perfluoroethyl ether unit with the proviso that Sm has a different number of perfluoroethyl ether units than at least one of So(a) and So(b), and each Se and Si include at least one functional group configured to attach to a surface.

Abstract: Various aspects of this disclosure provide a recording medium for heat-assisted-magnetic-recording (HAMR). The recording medium may include a substrate. The recording medium may further include a recording layer. The recording medium may also include a thermal control layer between the recording layer and the substrate. The thermal control layer may have a thermal conductivity that increases with increasing temperature.

Abstract: An inductor is provided including a multilayer body in which a plurality of magnetic layers containing a ferrite are laminated. A coil part including a plurality of conductive patterns is disposed in the multilayer body. External electrodes are electrically connected to the coil part. The ferrite may contain iron (Fe), manganese (Mn), nickel (Ni), zinc (Zn), and vanadium (V), and the ferrite may contain 40 to 55 mol % of iron (Fe) calculated as iron oxide (Fe2O3), 5 to 20 mol % of nickel (Ni) calculated as nickel oxide (NiO), 15 to 25 mol % of zinc (Zn) calculated as zinc oxide (ZnO), 15 to 30 mol % of manganese (Mn) calculated as manganese oxide (MnO), and 1 to 4 mol % of vanadium (V) calculated as vanadium oxide (V2O5).

Abstract: A magnetic storage medium is formed of magnetic nanoparticles that are encapsulated within nanotubes, which are arranged in a substrate to facilitate the reading and writing of information by a read/write head. The substrate may be flexible or rigid. Information is stored on the magnetic nanoparticles via the read/write head of a storage device. These magnetic nanoparticles are arranged into data tracks to store information through encapsulation within the carbon nanotubes. As carbon nanotubes are bendable, the carbon nanotubes may be arranged on flexible or rigid substrates, such as a polymer tape or disk for flexible media, or a glass substrate for rigid disk. A polymer may assist holding the nanoparticle-filled carbon tubes to the substrate.

Abstract: A magnetic recording medium that includes a substrate, an insulation layer applied onto a surface of the substrate, and a magnetic layer applied onto the insulation layer. The insulation layer is made from a redox-corrosion-inhibiting material. In one embodiment, the insulation layer inhibits redox corrosion by inhibiting electron transfer through the insulation layer (e.g., inhibits electron transfer between the substrate and the magnetic layer).

Abstract: A magnetic recording medium which is capable of effectively preventing a surface thereof from being contaminated, and is capable of preventing a contaminant thereon from adhering (being transferred) to a magnetic head, and a magnetic recording and reproducing apparatus including the magnetic recording medium are provided, A carbon protective layer of the magnetic recording medium is nitrided, and as a lubricant a compound A expressed by the following General Formula (1) and a compound B expressed by the following General Formula (2) are mixed and used.

Abstract: A perpendicular magnetic recording medium includes a structure in which at least a soft magnetic backing layer, an underlayer, an intermediate layer, and a perpendicular magnetic recording layer are sequentially laminated on a non-magnetic substrate, in which the soft magnetic backing layer includes at least a soft magnetic film having an amorphous structure, the underlayer includes a first underlayer and a second underlayer laminated in this order from the non-magnetic substrate side, the first underlayer is made of a TiV alloy having an amorphous structure, the second underlayer includes a NiW alloy, the intermediate layer includes Ru or a Ru alloy, the soft magnetic film having an amorphous structure directly contacts the first underlayer, and the first underlayer directly contacts the second underlayer.

Abstract: The carbon fiber forming raw material is a carbon fiber forming raw material (Z) as a prepreg including sizing agent-coated carbon fibers and a thermosetting resin or a carbon fiber forming raw material (Y) as a forming material that includes sizing agent-coated carbon fibers and has a woven fabric form or a braid form. The sizing agent includes components (A) and (B). The component (A) is an epoxy compound having two or more epoxy groups or two or more types of functional groups. The component (B) is one or more compounds selected from the group consisting of a tertiary amine compound, a tertiary amine salt, a quaternary ammonium salt, a quaternary phosphonium salt, and a phosphine compound. The component (B) is contained in an amount of 0.1 to 25 parts by mass relative to 100 parts by mass of the component (A).

Abstract: A heat-treated cord comprising a low modulus yarn core that is wrapped by a plurality of high modulus wrapping yarns that were heat-treated for a time at a temperature and under a load sufficient to provide a free shrinkage of at least 2½ percent and a shrinkage force of at least 3 pounds.

Abstract: A magnetic recording medium is provided that includes, in the order recited, a substrate; a first seed layer; a second seed layer containing ZnO; a third seed layer containing MgO; and a magnetic recording layer containing an ordered alloy. The first seed layer contains Ru and at least one material selected from the group consisting of oxides, carbides, and nitrides. Employing seed layers enables the magnetic recording medium to be a perpendicular magnetic recording medium by having the magnetic recording layer contain an ordered alloy suitable for perpendicular magnetic recording. Recording density is improved thereby while ensuring required thermal stability. Further, the invention achieves an increased thickness of the magnetic layer and a reduced grain size.

Abstract: A graphene fiber and a preparation method thereof, where the graphene fiber is a composite fiber of metal nanowire doped graphene fiber, and principal components of the composite fiber are graphene and metal nanowires, a mass ratio of metal nanowires is 0.1%-50%, the graphene is in a form of sheet, and both the metal nanowires and graphene sheets are arranged in parallel along an axial direction of the graphene fiber. The metal nanowire doped graphene fiber is a new type of a high performance multi-functional fiber material, which achieves a significant improvement in electrical conductivity of graphene fibers through doping of metal nanowires and meanwhile demonstrates excellent tensile strength and toughness. The metal nanowire doped graphene fiber has great potential application value in a plurality of fields, for example, it is used as a lightweight flexible wire.

Abstract: Optical fiber amplifiers are disclosed that utilize optic fibers encapsulated by graphene as the gain medium. Doped fiber optic amplifiers utilize optic fibers that are doped with a rare earth element for the gain medium that is encapsulated by graphene. Raman fiber optic amplifiers utilize an undoped fiber as the gain medium that is encapsulated by graphene.

Abstract: The invention relates to a continuous, scalable and parallelizable method for preparing strong and stiff fibers (filaments) or films. The fiber or film is prepared by utilizing hydrodynamically induced alignment of the constituents of a dispersion in combination with surface-charge controlled gel transition to produce fibers with a high degree of alignment of the constituents (polymer(s), fibrils etc). The invention also relates to the fibers or films so formed.

Abstract: The present invention provides a dust core including, as principal components, a pulverized powder of an Fe-based amorphous alloy ribbon; and a Cr-containing Fe-based amorphous alloy atomized spherical powder, and the pulverized powder is in the shape of a thin plate having two principal planes opposing each other, and assuming that a minimum dimension along a plane direction of the principal planes is a grain size, the pulverized powder includes a pulverized powder with a grain size more than twice and not more than six times as large as a thickness of the pulverized powder in a proportion of 80 mass % or more of the whole pulverized powder and includes a pulverized powder with a grain size not more than twice as large as the thickness of the pulverized powder in a portion of 20 mass % or less of the whole pulverized powder.

Abstract: A perpendicular magnetic recording medium includes a soft magnetic underlayer, an underlayer, an intermediate layer, and a perpendicular magnetic recording layer successively stacked on a nonmagnetic substrate. The soft magnetic underlayer includes a soft magnetic layer having an amorphous structure. The underlayer includes a first underlayer, and a second underlayer provided between the first underlayer and the intermediate layer. The first underlayer is made of a TiV alloy having an amorphous structure, and the second underlayer is made of an NiW alloy including at least one element selected from a group consisting of Co, Cu, Al, Cr, and Fe. The intermediate layer is made of Ru or an Ru alloy, and wherein the soft magnetic layer, the first underlayer, and the second underlayer are stacked in this order.

Abstract: A magnetic-recording medium includes a hydrogen and nitrogen implanted carbon overcoat (HNICOC) on a magnetic-recording layer. The HNICOC includes nitrogen implanted in a top-surface layer of the HNICOC such that a percentage ratio of a concentration of the implanted nitrogen to a concentration of carbon is between about 30 percent (%) to about 10% within a depth from about 2 ?ngstrom (?) to about 5 ? from the top surface of the HNICOC. An amount of hydrogen implanted in the top-surface layer is between about 1% to about 12% within a distance less than about 5 ? from the top surface. A data storage device that incorporates the magnetic-recording medium within a magnetic-recording disk, and a method for making the magnetic-recording medium are also described.

Abstract: The present invention provides a magnetic recording layer that has a high magnetic anisotropy constant Ku and a low Curie temperature Tc, as well as a magnetic recording medium that incorporates such a magnetic recording layer. The magnetic recording medium of the present invention includes a nonmagnetic substrate and a magnetic recording layer containing an ordered alloy. The ordered alloy may contain at least one element selected from the group consisting of Fe and Ni; at least one element selected from the group consisting of Pt, Pd, Au, Rh and Ir; and Ru.

Abstract: A heat assisted magnetic recording (HAMR) media structure is disclosed. The HAMR media structure includes a magnetic recording layer comprising an array of magnetic grains for storing information; a heat sink layer disposed below the magnetic recording layer and having a first thermal conductivity; and an anisotropic thermal barrier layer disposed between the magnetic recording layer and the heat sink layer and having a vertical thermal conductivity and an in-plane thermal conductivity, wherein the vertical thermal conductivity is substantially higher than the in-plane thermal conductivity.

Abstract: A data device may have at least a magnetic lamination with a thermal retention structure deposited on a substrate and configured to maintain a predetermined temperature for a predetermined amount of time. Such predetermined temperature and amount of time may allow for the growth of a magnetic layer with a predetermined magnetic anisotropy.

Abstract: A method for making a magnetic recording medium, including providing a substrate, forming a magnetic layer on the substrate, applying filtered cathodic vacuum arc (FCVA) deposition to form a film on the magnetic layer, and performing nitridation on the film formed by the FCVA deposition.