Abstract: An apparatus includes a waveguide configured to deliver light to a transducer region. The apparatus also includes a plasmonic transducer that has two metal elements configured as side-by-side plates on a substrate-parallel plane with a gap therebetween. The gap is disposed along the substrate-parallel plane and has an input end disposed proximate the transducer region and an output end. The transducer is configured to provide a surface plasmon-enhanced near-field radiation pattern proximate the output end in response to the light received by the waveguide.

Abstract: A manufacturing method of a magnetic recording medium according to one embodiment includes forming a mask layer having a pattern regularly arranged in a longitudinal direction on a magnetic recording medium containing a substrate and a magnetic recording layer, forming a recording portion having a magnetic pattern and a non-recording portion by patterning the magnetic recording layer, and submitting the mask layer to a peeling liquid to peel the mask layer. The mask layer contains a lamination layer of a lift-off layer, a first hard mask, and a second hard mask. The second hard mask is formed of a material that is different from the material of the first hard disk and the material is dissolvable in the same peeling liquid as the peeling liquid that dissolves the lift-off layer.

Abstract: Disclosed herein are methods that include inserting a magnetic media into an enclosure and using a non-thermal physical vapor deposition process to deposit a lubricant onto the magnetic media within the enclosure. Also disclosed are methods that include loading a magnetic media that includes a tribological coating into an enclosure and using an electrospray ionization process to deposit a lubricant onto the magnetic media within a vacuum created by the enclosure.

Abstract: A magnet is disclosed. The magnet includes a plurality of layers such that a first layer includes a ferromagnetic material comprising iron and a rare earth element; and a second layer includes an alkaline earth metal fluoride and a rare earth oxide. A method of preparing a magnet and an article including the magnet are disclosed. The method includes disposing a first layer including a ferromagnetic material and disposing a second layer over the first layer.

Abstract: A method according to one embodiment includes forming a first portion of a thin film writer structure on a substantially planar portion of a substrate such that planes of deposition of the first portion of the writer structure are substantially parallel to a plane of the substrate; forming a portion of a write gap of the writer structure at an angle of greater than 0° relative to the substantially planar portion of the substrate; and causing the writer structure to tilt at an angle relative to the plane of the substrate such that a plane of deposition of the write gap is oriented about perpendicular to a final media-facing surface of the writer structure.

Abstract: [Problems] To have a thin film suitably function even when the thickness of the thin film is reduced. [Means for Solving Problems] Provided is a method for manufacturing a magnetic recording medium by forming a thin film on a substrate (12). The method is provided with a thin film forming step of forming the thin film by using a substance brought into the plasma state as a material. In the thin film forming step, the thin film is formed by using a material substance gathering means (30) for gathering the substance brought into the plasma state to the periphery of the substrate. The material substance gathering means (30) gathers the substance brought into the plasma state, for instance, to the periphery of the substrate (12) by generating a magnetic field at the periphery of the substrate (12).

Abstract: An applicator for grain boundary diffusion process that uniformly applies an RH powder without excess or deficiency onto a predetermined surface of a sintered compact with a given thickness and in a given pattern, the applicator being automated and performed on many sintered compacts during the production of a NdFeB system sintered magnet. The applicator includes a work loader and a print head, located above the work loader. The work loader includes: a laterally movable base; a lift being vertically movable with respect to the base; a frame that is attachable to and detachable from the lift; a tray that is attachable to and detachable from the frame; a supporter provided on the upper surface of the tray; and a vertically movable magnetic clamp. The print head includes: a screen having a passage section; and a movable squeegee and a backward scraper that maintains contact with the upper screen surface.

Abstract: In one embodiment, a magnetic head includes at least one magnetic head element for reading from and/or writing to a magnetic medium, the element having an air bearing surface (ABS) facing toward a magnetic medium, an adhesive film including silicon nitride above the ABS having a characteristic of being formed under a water vapor partial pressure, and a protective film above the adhesive film, the protective film including carbon. Also, in another embodiment, a method includes forming an ABS of a magnetic head, the ABS being a surface of the magnetic head which is closest to a magnetic medium when in use, forming an adhesive film above the ABS of the magnetic head, the adhesive film being formed under a water vapor partial pressure, and forming a protective film above the adhesive film, the protective film including carbon.

Abstract: Provided is a rare earth sintered magnet 10 comprising a group of main phase grains 2 each composed of an R-T-B-based rare earth magnet comprising a core 4 and a shell 6 covering the core 4, wherein a thickness of the shell 6 is 500 nm or less, R includes a light rare earth element and a heavy rare earth element, and a Zr compound 8 is present in a grain boundary phase 7 of the group of main phase grains 2 and/or the shell 6. Also provided are a motor comprising the rare earth sintered magnet 10 and an automobile comprising the motor.

Abstract: The subject matter disclosed herein provides methods for manufacturing an electronic lapping guide and a magnetic read head assembly. The magnetoresistive head assembly includes a sensing element that has a front edge and a front flux guide that has a back edge, such that the sensing element front edge and the front flux guide back edge share a common interface that defines an interface plane normal to the surface of a wafer substrate. The electronic lapping guide comprises a conductive material adapted to attach to two electrical leads for measuring a resistance through the conductive material. The conductive material may include a conductive material back edge aligned with the interface plane. The resistance of the conductive material may be inversely proportional to a conductive material length normal to the interface plane.

Abstract: A method and system provide a magnetoresistive structure from a magnetoresistive stack that includes a plurality of layers. The method and system include providing a mask that exposes a portion of the magnetoresistive stack. The mask has at least one side, a top, and a base at least as wide as the top. The method and system also include removing the portion of the magnetoresistive stack to define the magnetoresistive structure. The method and system further include providing an insulating layer. A portion of the insulating layer resides on the at least one side of the mask. The method and system further include removing the portion of the insulating layer on the at least one side of the mask and removing the mask.

Abstract: The embodiments disclose a method of protecting patterned magnetic materials of a stack, including depositing a thin continuous film of an inert material that is inert to the magnetic materials of a patterned stack upon which the thin continuous film is being deposited and forming a thin interim interface layer from the thin continuous film to protect top and sidewall areas of non-etched higher relief magnetic islands and magnetic film etched surfaces of the patterned stack from air exposure damage and damage from contact with backfilled materials.

Abstract: To provide a filmy structure of a nanometer size having a phase-separated structure effective for the case where a compound can be formed between two kinds of materials. A structure constituted by a first member containing a compound between an element A except both Si and Ge and SinGe1-n (where 0?n?1) and a second member containing one of the element A and SinGe1-n (where 0?n?1), in which one of the first member and the second member is a columnar member, formed on a substrate, whose side face is surrounded by the other member, the ratio Dl/Ds of an average diameter Dl in the major axis direction to an average diameter Ds in the minor axis direction of a transverse sectional shape of the columnar member is less than 5, and the element A is one of Li, Na, Mg, K, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Rb, Sr, Y, Zr, Nb, Mo, Ru, Rh, Pd, Cs, Ba, La, Hf, Ta, W, Re, Os, Ir, Pt, Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, and B.

Abstract: Although dots and servo patterns are made of the same magnetic material, the dots have a relatively low coercive force so as to allow data deletion and rewrite by a magnetic head, while the servo patterns have a high coercive force compared with the coercive force of the dots. The coercive force of the servo patterns is strong enough so as to eliminate the influence of shape magnetic anisotropy.

Abstract: Provided is a magnetic recording medium manufacturing apparatus capable of forming a lubricant film with a uniform thickness on the surface of a magnetic recording medium. The magnetic recording medium manufacturing apparatus includes a hanger mechanism (2) that is inserted into a central hole (100a) of a magnetic recording medium (100) and supports the magnetic recording medium (100) in a suspended state and a lifting mechanism (3) that lifts and lowers one of the hanger mechanism (2) and the dip tank (1) relative to the other.

Abstract: An R—Fe—B based porous magnet according to the present invention has an aggregate structure of Nd2Fe14B type crystalline phases with an average grain size of 0.1 ?m to 1 ?m. At least a portion of the magnet is porous and has micropores with a major axis of 1 ?m to 20 ?m.

Abstract: When a surface of magnetic carrier core particles is coated with coating resin composition particles, the coating is conducted so that a surface of the magnetic carrier is free from cracks and chips and has fewer residual resin composition particles and a coating is uniform. In the method, a rotor having a plurality of stirring members on a surface thereof is rotated to coat the surface of magnetic carrier core particles with the resin composition particles. When the coating is conducted, while repeatedly conducting transportation in a direction of a driver and transportation in an anti-driver direction, the surface of the magnetic carrier core particles is coated with the resin composition. The resin composition particles has a 50% particle diameter (D50) based on volume of 0.2 ?m or more to 6.0 ?m or less and the proportion of particles of 10.0 ?m or more is 2.0% by volume or less.

Abstract: A soft magnetic material is a soft magnetic material including a composite magnetic particle (30) having a metal magnetic particle (10) mainly composed of Fe and an insulating coating (20) covering metal magnetic particle (10), and insulating coating (20) contains an iron phosphate compound and an aluminum phosphate compound. The atomic ratio of Fe contained in a contact surface of insulating coating (20) in contact with metal magnetic particle (10) is larger than the atomic ratio of Fe contained in the surface of insulating coating (20). The atomic ratio of Al contained in the contact surface of insulating coating (20) in contact with metal magnetic particle (10) is smaller than the atomic ratio of Al contained in the surface of insulating coating (20). Thus, iron loss can be reduced.

Abstract: Fine composite metal particle comprising a metal core and a coating layer of carbon, and being obtained by reducing metal oxide powder with carbon powder.

Abstract: A rare-earth magnet includes a magnet body made of an R—Fe—B based rare-earth magnet material (where R is at least one rare-earth element) and a metal film that has been deposited on the surface of the magnet body. The magnet further includes a plurality of reaction layers between the magnet body and the metal film. The reaction layers include: a first reaction layer, which contacts with at least some of R2Fe14B type crystals, included in the magnet body, to have received the rare-earth element that has been included in the R2Fe14B type crystals; and a second reaction layer, which is located between the first reaction layer and the metal film and which has a lower rare-earth element concentration than that of the first reaction layer.

Abstract: A method for making an article comprising a multilayered structure comprising a series of magnetic layers is provided. The method includes providing a substrate and depositing a series of magnetic layers on the substrate and disposing insulating layers between successive magnetic layers. Each magnetic layer has a thickness of at least about 2 micrometers and magnetic material has an average grain size less than 200 nm.

Abstract: Disclosed is a method for manufacturing an optical information recording medium. The method includes laminating plural layers successively on a substrate having a through-hole at its center; and fitting center caps each having a predetermined radius in the through-hole to form at least two of the plural layers by a spin coat method. A radius of a first center cap used for forming an upper layer of the at least two layers is larger than a radius of a second center cap used for forming a lower layer thereof.

Abstract: A method in one embodiment includes applying an organic coating to a magnetic head for reducing exposure of the head to oxidation promoting materials; and storing the magnetic head. A method in another embodiment includes applying an organic coating to a magnetic head for reducing exposure of the head to oxidation promoting materials, the organic coating being applied to the magnetic head after the head is installed in the magnetic storage system. Another method includes fabricating a tape having an applicator portion for applying an organic coating to a magnetic head for reducing exposure of the head to oxidation promoting materials; applying the organic coating to the applicator portion of the tape; and applying a lubricant to a data portion of the tape. A method in another embodiment includes fabricating a tape having a data portion, and a cleaning portion for removing an organic coating from a magnetic head.

Abstract: The invention provides a nanolithographic method, comprising: (i) providing a substrate; (ii) providing a nanoscopic tip coated with a patterning compound; (iii) contacting the coated tip with the substrate so that the patterning compound is applied to the substrate to produce a desired pattern; and (iv) wherein the patterning compound is anchored to the substrate.

Abstract: The present invention provides a device and a method for producing a magnetic recording medium, the device and method capable of forming a lubricant membrane with a uniform thickness on a surface of the magnetic recording medium. Specifically, the device for producing the magnetic recording medium according to the invention is a device that forms a lubricant membrane on the surface of the magnetic recording medium by immersing the magnetic recording medium into an immersion tank that has a liquid lubricant and then raising the magnetic recording medium from the immersion tank. The device for producing the magnetic recording medium includes: a hanger device that is inserted into the central hole of the magnetic recording medium and supports the magnetic recording medium in a hanging state; and a raising and lowering device that raises and lowers one of the hanging device and the immersion tank with respect to the other thereof.

Abstract: A magnetic artificial superlattice is composed of laminated thin films including two or more kinds of magnetic flaky particles (magnetic titania nanosheets) obtained by exfoliation of a layer titanium oxide in which Ti atoms in the lattice have been substituted with magnetic elements.

Abstract: A surface agent includes two end portions and a middle portion disposed between the end portions. The end portions include a terminal section and a midsection. The terminal section includes at least one surface active functional group. The midsection includes at least one perfluoroethyl ether unit. The middle portion includes at least one perfluorobutyl ether unit.

Abstract: Magnetic composite particles can be used as proppants and allow for deliberate heating by applying an alternating magnetic field.

Abstract: A sintered magnet body (RaT1bMcBd) coated with a powder mixture of an intermetallic compound R1iM1j, R1xT2yM1z, R1iM1jHk), alloy (M1dM2e)or metal (M1) powder and a rare earth (R2) oxide is diffusion treated. The R2 oxide is partially reduced during the diffusion treatment, so a significant amount of R2 can be introduced near interfaces of primary phase grains within the magnet through the passages in the form of grain boundaries. The coercive force is increased while minimizing a decline of remanence.

Abstract: A soft magnetic material includes a plurality of composite magnetic particles (40) each including a metal magnetic particle (10) and an insulation coating (20) covering the surface of the metal magnetic particle (10), wherein the insulation coating (20) contains Si (silicon), and 80% or more of Si contained in the insulation coating constitutes a silsesquioxane skeleton. Therefore, it is possible to effectively decrease a hysteresis loss while suppressing an increase in eddy-current loss.

Abstract: A method of fabricating a discrete track magnetic recording media. A base layer is provided onto which repeating and alternating magnetic layer and non-magnetic layers are deposited. The thickness of the magnetic layer corresponds to the width of the track of the recording media. A cylindrical rod can be used as the base layer, such that the alternating magnetic and non-magnetic layers spiraling or concentric layers around the rod. The resulting media layer can be cut or sliced into individual magnetic media or used to imprint other media discs with the discrete pattern of the media layer.

Abstract: The present invention relates to a magnetic particle-containing water dispersion wherein the magnetic particles have a primary particle diameter of 5 to 15 nm and an average secondary particle diameter of 10 to 60 nm, and the water dispersion has a zeta potential of not more than ?20 mV when a pH value of the water dispersion lies within the range of 6 to 8, and further a surface of the respective magnetic particles is coated with a carboxyl group-containing polymer. The magnetic particle-containing water dispersion is produced by heating an aqueous solution in which the carboxyl group-containing polymer is dissolved, to a temperature of 90 to 100° C.

Abstract: A method of fabricating a recording head includes depositing an insulator material onto at least a portion of a first member, wherein the insulator material forms an insulator film having a film thickness. The method further includes depositing a writer pole material onto the insulator film, wherein the writer pole material forms a writer pole member, and wherein the insulator film is between the writer pole member and a contact layer. Further, in some embodiments, the film thickness determines the distance between the writer pole member and the first contact member and also determines the distance between the writer pole member and the second contact member.

Abstract: A magnetic recording medium comprises a substrate; a heatsink layer comprising a layer of crystallized CuTi; and a hard magnetic recording layer. The crystallized CuTi is applied in an amorphous state and then crystallized through heating. The use of this heatsink improves surface and underlayer roughness compared to previous heatsink designs.

Abstract: The present embodiments relate to a magnetic resonance local coil with a receive antenna for receiving magnetic resonance signals. The magnetic resonance local coil also includes a transmission unit for transmitting magnetic resonance signal data generated on the basis of the magnetic resonance signals via a data transmit antenna of the magnetic resonance local coil to a signal data receiving unit of a magnetic resonance tomography systems. The transmission unit is provided, at least in sections, with screening with a first metal coating and a first dielectric coating.

Abstract: The present invention relates to Fe16N2 particles in the form of a single phase which are obtained by subjecting iron oxide or iron oxyhydroxide whose surface may be coated with at least alumina or silica, if required, as a starting material, to reducing treatment and nitridation treatment, a process for producing the Fe16N2 particles in the form of a single phase for a heat treatment time of not more than 36 hr, and further relates to an anisotropic magnet or a bonded magnet which is obtained by magnetically orienting the Fe16N2 particles in the form of a single phase. The Fe16N2 particles according to the present invention can be produced in an industrial scale and have a large BHmax value.

Abstract: A method of fabricating a film of magnetic nanocomposite particles including depositing isolated clusters of magnetic nanoparticles onto a substrate surface and coating the isolated clusters of magnetic nanoparticles with an insulator coating. The isolated clusters of magnetic nanoparticles have a dimension in the range between 1 and 300 nanometers and are separated from each other by a distance in the range between 1 and 50 nanometers. By employing PVD, ablation, and CVD techniques the range of useful film thicknesses is extended to 10-1000 nm, suitable for use in wafer based processing. The described methods for depositing the magnetic nanocomposite thin films are compatible with conventional IC wafer and Integrated Passive Device fabrication.

Abstract: A spin transfer oscillator (STO) structure is disclosed that includes two assist layers with perpendicular magnetic anisotropy (PMA) to enable a field generation layer (FGL) to achieve an oscillation state at lower current density for MAMR applications. In one embodiment, the STO is formed between a main pole and write shield and the FGL has a synthetic anti-ferromagnetic structure. The STO configuration may be represented by seed layer/spin injection layer (SIL)/spacer/PMA layer 1/FGL/spacer/PMA layer 2/capping layer. The spacer may be Cu for giant magnetoresistive (GMR) devices or a metal oxide for tunneling magnetoresistive (TMR) devices. Alternatively, the FGL is a single ferromagnetic layer and the second PMA assist layer has a synthetic structure including two PMA layers with magnetic moment in opposite directions in a seed layer/SIL/spacer/PMA assist 1/FGL/spacer/PMA assist 2/capping layer configuration. SIL and PMA assist layers are laminates of (CoFe/Ni)x or the like.

Abstract: Disclosed are magnetic coated nanoparticles comprising magnetic cores coated with silica and an organic stabilizer, the magnetic coated nanoparticles having an average particle diameter of no more than about 1,000 nanometers. Also disclosed is a process for preparing silica-coated nanoparticles which comprises: (a) dispersing magnetic nanoparticle cores in a solvent to provide a dispersion having a pH of from about 1 to about 6; (b) adding to the dispersion of magnetic nanoparticles a solution containing tetraethylorthosilicate; and (c) homogenizing or sonicating the dispersion containing the magnetic nanoparticles.

Abstract: A soft magnetic material includes a plurality of composite magnetic particles including a metal magnetic particle and an insulating film surrounding a surface of the metal magnetic particle. The insulating film also contains a phosphate. The soft magnetic material further includes an aromatic polyetherketone resin and a metallic soap and/or an inorganic lubricant having a hexagonal crystal structure. The metallic soap and the inorganic lubricant are particles with an average particle size of not more than 2.0 ?m.

Abstract: A manufacturing method of a magnetic recording medium provided with a protective layer excellent in corrosion resistance, mechanical durability, adhesion with a lubrication layer, and floating stability of a head even if the film thickness is reduced is provided. This is a manufacturing method of a magnetic recording medium in which at least a magnetic layer, a carbon protective layer, and a lubrication layer are sequentially provided on a substrate, and said carbon protective layer is provided with a lower layer formed on the magnetic layer side and an upper layer formed on the lubrication layer side. The lower layer is formed by a chemical vapor deposition (CVD) method using hydrocarbon gas and then, the upper layer is formed by using mixed gas of hydrocarbon gas and nitrogen gas and then, treatment which nitridizes the surface of the upper layer is applied.

Abstract: A method and apparatus for forming magnetic media substrates is provided. A patterned resist layer is formed on a substrate having a magnetically susceptible layer. A conformal protective layer is formed over the patterned resist layer to prevent degradation of the pattern during subsequent processing. The substrate is subjected to an energy treatment wherein energetic species penetrate portions of the patterned resist and conformal protective layer according to the pattern formed in the patterned resist, impacting the magnetically susceptible layer and modifying a magnetic property thereof. The patterned resist and conformal protective layers are then removed, leaving a magnetic substrate having a pattern of magnetic properties with a topography that is substantially unchanged.

Abstract: A method and system for providing a magnetic transducer are disclosed. The method and system include providing a magnetic element including a free layer, a nonmagnetic spacer layer, a pinned layer, and a pinning layer adjacent to the pinned layer. The free layer is to be biased in a first direction. The pinning layer biases the pinned layer magnetization in a second direction. The pinning layer is oriented along the second direction. A hard bias structure is adjacent to the magnetic element. The hard bias structure magnetization is initialized such that it has a nonzero component along the second direction. The method and system also include performing thermal treatment(s) after initializing the hard bias magnetization. The thermal treatment(s) are above room temperature. The method and system further include resetting the hard bias magnetization substantially along the first direction after the thermal process(es) are performed.

Abstract: An MR element includes a first exchange coupling shield layer, an MR stack, and a second exchange coupling shield layer that are arranged in this order from the bottom, and a nonmagnetic layer surrounding the MR stack. The MR stack includes a first free layer, a spacer layer, a second free layer, and a magnetic cap layer that are arranged in this order from the bottom. In the step of forming the MR stack and the nonmagnetic layer, a protection layer is formed on a layered film that will be the MR stack later, and a mask is then formed on the protection layer. Next, the layered film and the protection layer are etched using the mask and then the nonmagnetic layer is formed. After removal of the mask, the protection layer is removed by wet etching.

Abstract: A manufacturing method of a soft magnetic material has a step of preparing a metal magnetic particle containing iron as the main component, and a step of forming an insulating film surrounding the surface of the metal magnetic particle. The step of forming the insulating film includes a step of mixing and stirring the metal magnetic particle, aluminum alkoxide, silicon alkoxide, and phosphoric acid.

Abstract: The present disclosure provides azeotropic and azeotrope-like compositions comprised of methylperfluoroheptene ethers and ethanol. The present disclosure also provides for methods of use for the azeotropic and azeotrope-like compositions.

Abstract: The present disclosure provides azeotropic and azeotrope-like compositions comprised of methylperfluoroheptene ethers and heptane. The present disclosure also provides for methods of use for the azeotropic and azeotrope-like compositions.

Abstract: The method for manufacturing a magnetic recording medium in a shape of a disk includes forming convex sections repeating on the upper surface of an intermediate layer in the radial direction of the disk, and each having an upper surface that repulses magnetic particles; and filling the magnetic particles into concave sections sandwiched by the convex sections in a self-assembling way to form a magnetic recording layer with the magnetic particles.

Abstract: A magnetic disk with which further reduction of magnetic spacing can be realized and which has high reliability under such circumstances of a lower floating amount of a magnetic head involved in the recent rapid increase in recording density and of extremely severe environmental resistance involved in diversification in use applications is provided.

Abstract: Magnetic nanostructures comprised of an assembly of magnetic nanorods held together by dipole forces in a dendritic pattern and their method of manufacture. The dendritic magnetic nanostructures are prepared at room temperature by applying a magnetic field to a reverse micelle system wherein at least one salt of a magnetic metal is being precipitated within the core of the reverse micelle.