Abstract: The present disclosure relates to a magnetic recording medium for a magnetic media drive. Absorbing smears can develop on magnetic recording heads during operation. The absorbing smears lead to shortened drive lifetime. Transparent smears, on the other hand, do not have as deleterious of an impact on drive lifetime as compared to absorbing smears. By doping the medium with a dopant that can lead to development of transparent smears, the formation of absorbing smears can be reduced or even eliminated, which leads to a longer drive lifetime. The dopant can be disposed in the capping layer of the medium or in the absorbing overcoat layer. The dopant will migrate through the medium to the top surface of the medium during operation. From the top surface of the medium, the dopant will deposit on the magnetic head and form a transparent smear.

Abstract: An apparatus includes a substrate and a magnetic layer coupled to the substrate. The magnetic layer includes an alloy that has magnetic hardness that is a function of the degree of chemical ordering of the alloy. The degree of chemical ordering of the alloy in a first portion of the magnetic layer is greater than the degree of chemical ordering of the alloy in a second portion of the magnetic layer, and the first portion of the magnetic layer is closer to the substrate than the second portion of the magnetic layer.

Abstract: According to one embodiment, a patterned magnetic storage medium is disclosed herein. The magnetic storage medium includes a magnetic domain, a substantially non-magnetic region laterally adjacent to the magnetic domain, and an exchange spring structure disposed between the magnetic domain and the laterally adjacent non-magnetic region wherein the exchange spring structure comprises implanted ions.

Abstract: According to one embodiment, a magnetic recording medium used in a heat assisted magnetic recording system includes a magnetic recording layer and a metal particle layer in which metal particles are arranged in a dispersed manner on a substrate. In the metal particle layer, percentage content of the metal particles in a second region positioned at an outer periphery side of a first region is higher than that of the first region in a surface direction of the substrate.

Abstract: A magnetic data storage medium includes an ion doped magnetic recording layer having a continuous grading of coercivity or anisotropy. The medium also includes an ion-doped overcoat having an ion density that is at a maximum substantially at the interface with the recording layer and has a continuous grading of ion density between the overcoat and the recording layer. The coercivity is at a minimum substantially at the interface.

Abstract: In one embodiment, a magnetic storage device includes at least one microwave assisted magnetic recording (MAMR) head, each MAMR head including a spin torque oscillator (STO), a magnetic recording medium, a drive mechanism for passing the magnetic medium over the at least one MAMR head, and a controller electrically coupled to the at least one MAMR head for controlling operation of the at least one MAMR head, wherein the magnetic recording medium includes a recording layer positioned directly or indirectly above a substrate and an assist layer positioned above the recording layer, wherein the recording layer includes at least Co, Pt, and an oxide or oxygen, wherein the assist layer is positioned closer to the at least one MAMR head and includes at least Co and Pt, and wherein at least a portion of the recording layer has a smaller anisotropic magnetic field than the assist layer.

Abstract: A data storage device including a substrate; a magnetic structure deposited on the substrate; and a molecular overcoat deposited on the magnetic structure, the molecular overcoat having a thickness of not greater than about 100 ?.

Abstract: Provided herein is a method including oxidizing tops of features of a patterned magnetic layer to form oxidized tops of the features; removing an excess of an applied first protective material down to at least the oxidized tops of the features to form a planarized layer; and applying a second protective material over the planarized layer.

Abstract: The embodiments disclose a plasmonic cladding structure including at least one conformal plasmonic cladding structure wrapped around plural stack features of a recording device, wherein the conformal plasmonic cladding structure is configured to create a near-field transducer in close proximity to a recording head of the recording device, at least one conformal plasmonic cladding structure with substantially removed top surfaces of the stack features with exposed magnetic layer materials and a thermally insulating filler configured to be located between the stack features.

Abstract: The embodiments disclose a continuous thin film magnetic layer and a patterned hard mask layer configured to be deposited onto the continuous thin film magnetic layer and to have plural ion implantations, wherein the ion implantations are configured to create chemically and structurally altered localized magnetic regions unprotected by the patterned hard mask layer.

Abstract: A magnetic data storage medium comprising: an ion doped magnetic recording layer having a continuous grading of coercivity or anisotropy, wherein the coercivity or anisotropy is at a minimum substantially at one side of the magnetic recording layer, and having substantial portion of maximum coercivity or anisotropy at the other side of the magnetic recording layer. Also, a method of fabricating a magnetic data storage medium is included.

Abstract: According to one embodiment, there is provided a method for producing a magnetic recording medium which includes forming a mask layer on a magnetic recording layer, applying metal fine particles on the mask layer, covering the metal fine particles with an overcoat layer, irradiating with energy beams through the overcoat layer so as to deactivate a protective coating of the metal fine particles, transferring a metal fine particle pattern from the mask layer to the magnetic recording layer, and removing the mask layer from the magnetic recording layer.

Abstract: A magnetic media having a novel cap layer that allows the cap layer having improved exchange coupling and reduced thickness. The cap layer is doped with a non-reactive element such as Ar, Kr, Xe, Ne or He preferably Ar. This doping reduces increases exchange coupling and reduces the dead layer, allowing the cap layer to be made thinner for reduced magnetic spacing and improved data recording performance.

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 magnetic recording medium is capable of improving the efficiency of thermal energy supply to a magnetic recording layer. A magnetic recording medium for thermally assisted recording comprises at least a nonmagnetic substrate, a magnetic recording layer, and a reflectance change layer. The magnetic recording layer is positioned between the substrate and the reflectance change layer.

Abstract: A magnetic recording medium enabling excellent magnetic recording reproduction characteristics to be exhibited with the spacing loss reduced. The magnetic recording medium has a magnetic recording layer of a granular structure having nonmagnetic boundary portions between pillar-shaped magnetic particles on a nonmagnetic substrate, and an exchange coupling layer provided on the magnetic recording layer to add an action of exchange coupling the magnetic particles.

Abstract: According to at least one embodiment, a release layer, a first mask layer containing a first metal material, an antidiffusion layer containing an oxide or nitride of the first metal material, and a second mask layer containing a second metal material are formed on a magnetic recording layer, a resist layer is formed on the second mask layer, and projections pattern is formed in the resist layer and sequentially transferred to the second mask layer, antidiffusion layer, first mask layer, release layer, and magnetic recording layer. After that, the release layer is removed.

Abstract: Magnetic structures, methods of forming the same, and memory devices including a magnetic structure, include a magnetic layer, and a stress-inducing layer on a first surface of the magnetic layer, a non-magnetic layer on a second surface of the magnetic layer. The stress-inducing layer is configured to induce a compressive stress in the magnetic layer. The magnetic layer has a lattice structure compressively strained due to the stress-inducing layer.

Abstract: A perpendicularly magnetized thin film structure and a method of manufacturing the perpendicularly magnetized thin film structure are provided. The perpendicularly magnetized thin film structure includes i) a base layer, ii) a magnetic layer located on the base layer and having an L10-crystalline structure, and iii) a metal oxide layer located on the magnetic layer.

Abstract: A magnetic recording disk has surface features of elevated lands and recessed grooves, and a planarized upper surface. A chemical-mechanical-polishing (CMP) stop layer is deposited over the lands and into the recesses. An adhesion film, like silicon, is deposited over the CMP stop layer, and fill material containing a silicon oxide (SiOx) is deposited over and in contact with the adhesion film. The adhesion film improves the adhesion of the SiOx fill material and prevents delamination during a subsequent two-step CMP planarizing process.

Abstract: A method for forming magnetic media is provided. The method of forming the magnetic media includes forming a plurality of regions of resist material on a top surface of a substrate which defines a plurality of regions of exposed substrate on the top surface of the substrate between adjacent ones of the plurality of regions of resist material. The method also includes forming magnetic material on the plurality of regions of resist material and the plurality of regions of exposed substrate and depositing material over the magnetic material, the material encapsulating a portion of the magnetic material formed on the plurality of regions of exposed substrate. A magnetic recording medium formed in accordance with the method is also provided.

Abstract: Aspects include recording media with enhanced areal density through reduction of head media spacing, head keeper spacing, or head to soft underlayer spacing. Such aspects comprise replacing currently non-magnetic components of devices, such as interlayers and overcoats with components and compositions comprising magnetic materials. Other aspects relate to magnetic seed layers deposited within a recording medium. Preferably, these aspects, embodied as methods, systems and/or components thereof reduce effective magnetic spacing without sacrificing physical spacing.

Abstract: An apparatus includes a substrate, a recording layer on the substrate, and a nanocomposite layer on the recording layer, the nanocomposite layer including a wear-resistant material and a solid lubricant material, wherein the atomic percentage of the solid lubricant material in the nanocomposite layer is in a range from about 5% to about 99%. A method of making the apparatus is also provided.

Abstract: Embodiments of the present invention provide a magnetic disk having a lubricating layer formed on the surface thereof, which meets all the requirements for adhesiveness, adequate flowability, and strong binding power. In a particular embodiment, a magnetic disk has a magnetic layer, a protective layer, and a lubricating layer which are formed on a non-magnetic substrate, which is characterized in that said lubricating layer is comprised of a lubricant containing a first ingredient and a second ingredient, said first ingredient as the main constituent being a first perfluoropolyether compound represented by the formula (1) below, which has a weight-average molecular weight of 500 to 6000 and a dispersity smaller than 1.

Abstract: Lubricant with non-terminal functional groups. The location of the functional groups minimizes free chain length and molecular weight of a lubricant while simultaneously maximizing evaporation temperature. The locations of the functional groups to the backbone of the molecule of the lubricant allows for shorter lengths of free backbone length between functional groups attached to a lubricated surface. The lubricant lubricates mechanical devices including hard disk drives.

Abstract: An object of the present invention is to provide a method of manufacturing a perpendicular magnetic recording medium (100) in which both of a coercive force Hc and reliability can be achieved at a higher level even with heating at the time of forming a medium protective layer (126) and to provide the perpendicular magnetic recording medium (100).

Abstract: A magnetic recording disk drive has a patterned perpendicular magnetic recording disk of the type that has spaced-apart pillars with magnetic material on their ends and with trenches between the pillars that are nonmagnetic regions. A nonmagnetic capping layer is located in the trenches above the nonmagnetic regions. The substrate has diffusion material in the trenches that when heated will diffuse into the magnetic recording layer material and chemically react with it. The pillars are formed of material that will not diffuse into the recording layer. The recording layer is formed over the entire substrate and a nonmagnetic capping layer that is not chemically reactive with the diffusion material is formed over the recording layer in the trenches. The substrate is annealed to cause the recording layer material in the trenches and the material in the substrate to diffuse into one another and chemically react to render the trenches nonmagnetic.

Abstract: A magnetic recording media includes a toroidal substrate, a surface thereof is divided into a recording area located in a central part between an outer peripheral edge and an inner peripheral edge, edge areas located within 100 ?m or more and 2,000 ?m or less from the outer and inner peripheral edges, respectively, and adjacent areas located between the edge areas and the recording area, respectively, a magnetic film on the substrate, and a protective film on the magnetic film, in which the magnetic film is thinner in the edge areas than that in the adjacent areas, and at least a part of the protective film in the edge areas is thicker than that in the adjacent areas.

Abstract: An object of the invention is to provide a magnetic recording medium which exhibits an excellent corrosion resistance. To this end, proposed is a magnetic recording medium including a magnetic recording layer in which: a magnetic body and a filling body alternately appear along a recording surface; and a layer made of a passivated metal or an alloy containing at least one passivated metal is formed in an interface portion between an area of the magnetic body and an area of the filling body.

Abstract: A SiON overcoat for use on magnetic media for magnetic recording. The SiON overcoat is deposited by pulsed DC sputtering while applying a negative DC bias. The SiON overcoat is especially useful on perpendicular magnetic recording media because of its ability to deposit thinly and evenly on a rough, granular high coercivity recording media while maintaining excellent corrosion protection properties. A SiON overcoat can be applied less than 3 nm thick while still maintaining excellent mechanical and corrosion protection. The overcoat also has a very high density and water contact angle.

Abstract: A method and structure for a ferroelectric storage medium, includes a metallic underlayer and a ferroelectric data layer over the metallic underlayer. A layer over the ferroelectric data layer has a charge migration rate faster than a charge migration rate of the ferroelectric data layer.

Abstract: An apparatus includes a substrate, a recording layer on the substrate, and a nanocomposite layer on the recording layer, the nanocomposite layer including a wear-resistant material and a solid lubricant material, wherein the atomic percentage of the solid lubricant material in the nanocomposite layer is in a range from about 5% to about 99%. A method of making the apparatus is also provided.

Abstract: A magnetic disk comprises a magnetic layer and a protective layer sequentially formed on a disk-shaped substrate and has a principal surface to which data is recorded, and a side surface portion both of which are coated with the protective layer. The protective layer on the side surface portion is thinner than the protective layer on the principal surface. Preferably, the side surface portion includes a side wall surface, and a chamfered surface lying between the side wall surface and the principal surface, and at least the protective layer on the chamfered surface is thinner than the protective layer on the principal surface.

Abstract: A perpendicular magnetic recording media having an amorphous corrosion-resistant cap layer is disclosed. Preferably, the cap layer is a chromium alloy comprising Pt and C. A method of manufacturing the media is also disclosed.

Abstract: Perpendicular magnetic recording (PMR) media and methods of fabricating PMR media are described. The PMR media includes, among other layers, a perpendicular magnetic recording layer and a cap layer that are exchange coupled. The magnetic recording layer and the cap layer may be exchange coupled through direct contact, or may be exchange coupled over a coupling layer. In either embodiment, the cap layer is formed from a CoPtCr alloy having a concentration of Cr in the range of about 15-22 at %.

Abstract: Lubricant with non-terminal functional groups. The location of the functional groups minimizes free chain length and molecular weight of a lubricant while simultaneously maximizing evaporation temperature. The locations of the functional groups to the backbone of the molecule of the lubricant allows for shorter lengths of free backbone length between functional groups attached to a lubricated surface. The lubricant lubricates mechanical devices including hard disk drives.

Abstract: A device comprising a cavity adapted to house a removable, electronic storage device. The device also comprises a data connector adapted to blind-mate with the storage device. The data connector is lubricated.

Abstract: A patterned perpendicular magnetic recording medium of the type that has spaced-apart pillars with magnetic material on their ends and with trenches between the pillars that are nonmagnetic regions is made with a method that allows use of a pre-etched substrate. A nonmagnetic capping layer is located in the trenches above the nonmagnetic regions. The substrate has diffusion material in the trenches that when heated will diffuse into the magnetic recording layer material and chemically react with it. The pillars are formed of material that will not diffuse into the recording layer. The recording layer is formed over the entire substrate and a nonmagnetic capping layer that is not chemically reactive with the diffusion material is formed over the recording layer in the trenches. The substrate is annealed to cause the recording layer material in the trenches and the material in the substrate to diffuse into one another and chemically react to render the trenches nonmagnetic.

Abstract: According to one embodiment, a patterned magnetic recording media has a magnetic recording layer and a protective layer formed on a substrate, in which the magnetic recording layer including a magnetic material patterned in tracks and a nonmagnetic material filled in between the tracks in a data area, and has a recessed portion formed in an area within 1 mm from an outer media end and extending to the media end. The recessed portion being formed 1 to 50 nm deeper than the data area.

Abstract: A manufacturing method which is capable of easily and inexpensively manufacturing discrete track-type magnetic recording media is provided. A method of manufacturing magnetic recording media having a main surface on which magnetic tracks 4 are disposed in a substantially concentric arrangement and on which grooves 5 for magnetically separating radially adjoining magnetic tracks 4 from one another are formed is characterized by forming on a flat substrate 1 at least a magnetic recording layer 2 so as to fabricate a workpiece 1a, then pressing a stamper having protrusions corresponding to the grooves 5 against a main surface of the workpiece so as to transfer the shape of the protrusions to the workpiece and form grooves 5 between the magnetic tracks 4.

Abstract: Not only chemical durability of a glass substrate for an information recording medium is improved, but also no deformation of the substrate and no alteration of substrate characteristics are to be made. A chemical treatment layer formed on the glass substrate surface is made thicker toward a large surface roughness portion of the glass substrate, prior to being subjected to a chemical treatment, from a small surface roughness portion of the glass substrate. Layer thickness D of the resulting chemical treatment layer preferably satisfies the following inequality (1) in view of acquisition of chemical durability. 100 Ra?D?3000 Ra??(1) wherein Ra is surface roughness of the glass substrate prior to being subjected to the chemical treatment.

Abstract: A substrate for perpendicular magnetic recording medium 2 is provided with a soft magnetic substrate coat 5. On this soft magnetic substrate coat 5, an anticorrosion coat 5 is formed. The anticorrosion coat 6 is preferably formed so as to completely cover the entire soft magnetic substrate coat 5.

Abstract: A magnetic recording tape configured for increased surface lubricity includes an elongated substrate and a magnetic side disposed on the substrate. The magnetic side includes a magnetic recording layer defining an exposed magnetic recording surface opposite the substrate, and a support layer deposited on the substrate between the substrate and the magnetic recording layer. The support layer includes nano-particles configured to release lubrication to the exposed magnetic recording surface. In this regard, the support layer configures the exposed magnetic recording surface to have a surface lubrication to total lubrication ratio (SL ratio) of greater than about 5%.

Abstract: One embodiment in accordance with the invention is a method comprising depositing a material above a disk substrate. The disk substrate is for a data storage device. The material above the disk substrate can be nanoimprinted. The material can be processed to transform it into a substantially solidified material. A magnetic material can be deposited on the substantially solidified material.

Abstract: Carbon or boron is added into the CoCr layers of a multiplayer perpendicular magnetic media structure to reduce media noise. The perpendicular magnetic media structure has sharp interfaces between Co-alloy layers and Pd or Pt layers and significantly reduced exchange coupling. In accordance with one embodiment of the invention, the perpendicular magnetic media structure with carbon or boron additives is 700 ? FeCo30.8B12/20 ? TaOx/700 ? FeCo30.8B12/20 ? TaOx/700 ? FeCo30.8B12/20 ? TaOx/158 ? FeCo30.8B12/17 ? Ta/49 ? ITO/33 ? CoCr37Ru10/2.5 ? COy/2.5 ? C/[(CoCr9)C6.8/Pd]19/50 ? CHN. [(CoCr9)C6.8/Pd]19 means 19 layers of the bi-layer stack (CoCr9)C6.8/Pd. TaOx stands for surface-oxidized Ta and COy stands for C oxides. ITO stands for Indium Tin Oxide and consists of In2O3 and Sn2O5 at 80 and 20 molecular percent respectively. CHN refers to hydrogenated and nitrogenated carbon.

Abstract: A magnetic card of the invention comprises a card substrate 11 on which a magnetic layer 12, a thin-film layer 13 formed of a metal or a metal compound for concealing the magnetic layer, a printed layer 14 and a volume hologram layer 15 are successively provided, wherein magnetic information is recorded on or read from a volume hologram layer side. The volume hologram layer 15 is composed essentially of a photosensitive material comprising a cationic polymerizable compound, a radical polymerizable compound, a photo-radical polymerization initiator system that is sensitive to light of a specific wavelength to polymerize the radical polymerizable compound, and a photo-cationic polymerization initiator system that is less sensitive to the light of a specific wavelength but sensitive to light of another wavelength to polymerize the cationic polymerizable compound.