Entries |
Document | Title | Date |
20080220156 | CPP with elongated pinned layer - CPP magnetic read head designs have been improved by increasing the length of the AFM layer relative to that of both the free and spacer layers. The length of the pinned layer is also increased, but by a lesser amount, an abutting conductive layer being inserted to fill the remaining space over the AFM layer. The extended pinned layer increases the probability of spin interaction while the added conducting layer serves to divert sensor current away from the bottom magnetic shield which now is no longer needed for use as a lead. | 09-11-2008 |
20080241366 | APPARATUS FOR AND METHOD OF APPLYING LUBRICANT COATINGS TO MAGNETIC DISKS VIA A VAPOR FLOW PATH INCLUDING A SELECTIVELY OPENED AND CLOSED SHUTTER - Condensation is prevented on surfaces in a flow path for lubricant vapor that applies lubricant coatings to magnetic disks in the flow path. The vapor is derived by heating liquid in a reservoir. The flow path includes a vapor chamber between the reservoir and an apertured diffuser. The vapor chamber has a first wall extending in the same direction as a straight-line path between the reservoir and the disk and a second wall providing a heat conduction path between the heater and the reservoir. The relative temperatures of the first and second walls is controlled to prevent substantial condensation on surfaces of the flow path. | 10-02-2008 |
20080241367 | APPARATUS FOR AND METHOD OF APPLYING LUBRICANT COATINGS TO MAGNETIC DISKS VIA A VAPOR FLOW PATH INCLUDING A SELECTIVELY OPENED AND CLOSED SHUTTER - Lubricant coatings are applied as lubricant vapor to magnetic disks in a lubricant vapor flow path between the disks and a reservoir for liquid lubricant that is heated to the vapor. The flow path includes a vapor chamber between the reservoir, an apertured diffuser and a shutter for selectively and simultaneously unblocking and blocking the flow path. While the shutter is closed lubricant vapor stays in the vapor chamber. While the shutter is open the lubricant vapor flows via the flow path from the reservoir to the holder. During substantial lulls in applying disks to the flow path, the shutter is closed and vaporizing heat is applied to the liquid lubricant so pressure in the vapor chamber causes the volume of liquid in the reservoir to remain substantially constant. | 10-02-2008 |
20080241368 | TREATING SOLUTION FOR FORMING FLUORIDE COATING FILM AND METHOD FOR FORMING FLUORIDE COATING FILM - A conventional method for forming an insulating film on a magnet has a difficulty in achieving sufficient improvement in magnetic characteristics due to nonuniformity of a coating film, and an extended time and higher temperature which are required in a thermal treatment. In order to solve the problems, the present invention provides a treating solution composed of an alcohol based solvent and a rare earth fluoride or alkaline earth metal fluoride dispersing in the solvent. In the treating solution, at least one X-ray diffraction peak has a half-value width larger than 1°. The present invention also provides a method for forming an insulating film using the treating solution. | 10-02-2008 |
20080254208 | Thin film magnetic head structure adapted to manufacture a thin film magnetic head - A thin-film magnetic head structure has a configuration adapted to manufacture a thin-film magnetic head configured such that a main magnetic pole layer including a magnetic pole end part on a side of a medium-opposing surface opposing a recording medium, a write shield layer opposing the magnetic pole end part so as to form a recording gap layer on the medium-opposing surface side, and a thin-film coil wound about the write shield layer or main magnetic pole layer are laminated. The main magnetic pole layer has an end face joint structure where respective end faces of the magnetic pole end part and a yoke magnetic pole part having a size greater than that of the magnetic pole end part are joined to each other, and a surface with a flat structure on a side closer to the thin-film coil. | 10-16-2008 |
20090104345 | Method for manufacturing a magnetoresistive-effect device - A magnetic disk apparatus having a highly sensitive reproducing head and a method for manufacturing the magnetic disk apparatus are disclosed. A spin-valve-type multilayer film composed of an antiferromagnetic layer, a ferromagnetic layer, a nonmagnetic layer and a free magnetic layer is used as a magnetoresistive-effect device for the reproducing head. An antiferromagnetic reaction layer is formed between the antiferromagnetic reaction layer and the ferromagnetic layer. The antiferromagnetic reaction layer is formed of a metallic compound containing oxygen. | 04-23-2009 |
20090142484 | METHOD OF MANUFACTURING MAGNETIC-DISK GLASS SUBSTRATE AND METHOD OF MANUFACTURING MAGNETIC DISK - A process for producing a glass substrate for magnetic disk through chemical strengthening operation, in which the distribution of compressive stress is uniformed at a surface layer portion of the glass substrate to thereby, while preventing failures such as head crash and thermal asperity, realize a low flying height of magnetic head, attaining high-density information recording. In particular, the provided glass substrate for magnetic disk is suitable for application to compact magnetic disks for portable information equipment. The chemical strengthening operation includes the first step of bringing the glass substrate into contact with a first treatment solution (chemical strengthening treatment solution) containing first ions with an ionic radius larger than those of ions within the glass substrate and either the second and subsequent steps of bringing the platy glass into contact with treatment solutions containing second and subsequent bivalent ions, or the second and subsequent steps of bringing the glass substrate into contact with second and subsequent chemical strengthening treatment solutions containing second and subsequent ions exhibiting an ion exchange rate with ions within the glass substrate greater than that of the first ions to thereby decelerate the ion exchange. | 06-04-2009 |
20090208641 | FABRICATION METHOD AND FABRICATION APPARATUS OF HEAD USING NEAR FIELD LIGHT - Truncated quadrangular pyramids | 08-20-2009 |
20090246362 | HEAT ASSISTED MAGNETIC RECORDING MEDIUM AND METHOD FOR FABRICATING THE SAME - A novel heat assisted magnetic recording (HAMR) medium and the fabrication method therefor are provided. The exchange coupling effect occurring at the interface of FePt/CoTb double layers is adopted, and thus the resulting magnetic flux would be sufficient enough to be detected and readout under the room temperature. The provided HAMR medium exhibits a relatively high saturation magnetization and perpendicular coercivity, and thus possesses a great potential for the ultra-high density recording application. | 10-01-2009 |
20090252865 | METHOD FOR PRODUCING SINTERED NdFeB MAGNET - The present invention provides a method for producing a sintered NdFeB magnet having high coercivity and capable of being brought into applications without lowering its residual magnetic flux density or maximum energy product and without reprocessing. The method for producing a sintered NdFeB magnet according to the present invention includes applying a substance containing dysprosium (Dy) and/or terbium (Tb) to the surface of the sintered NdFeB magnet forming a base body and then heating the magnet to diffuse Dy and/or Tb through the grain boundary and thereby increase the coercivity of the magnet. This method is characterized in that: (1) the substance containing Dy or Tb to be applied to the surface of the sintered NdFeB magnet is substantially a metal powder; (2) the metal powder is composed of a rare-earth element R and an iron-group transition element T, or composed of R, T and another element X, the element X capable of forming an alloy or intermetallic compound with R and/or T; and (3) the oxygen content of the sintered NdFeB magnet forming the base body is 5000 ppm or lower. The element T may contain nickel (Ni) or cobalt (Co) to produce an anticorrosion effect. | 10-08-2009 |
20090274835 | DIFFUSER/SHUTTER DESIGN FOR VAPOR PHASE LUBRICATION PROCESS - This invention relates to an apparatus for vapor lubrication comprising a chamber, a diffuser plate having an array of orifices, a shutter plate having substantially the same pattern of orifices as that of the diffuser plate, a holder for holding an object to be vapor coated in the chamber, and an actuator to move the shutter plate to align the array of orifices of the shutter plate with the array of orifices of the diffuser plate or at least partially block the array of orifices of the diffuser plate with the diffuser plate. | 11-05-2009 |
20090274836 | SYSTEMS AND METHODS FOR PROTECTING A SENSITIVE DEVICE FROM CORROSION - 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. | 11-05-2009 |
20090297699 | PROCESS FOR PRODUCING MAGNET - The process for producing a magnet according to the invention is characterized by comprising a first step in which a heavy rare earth compound containing Dy or Th as a heavy rare earth element is adhered onto a sintered compact of a rare earth magnet and a second step in which the heavy rare earth compound-adhered sintered compact is subjected to heat treatment, wherein the heavy rare earth compound is a Dy or Th iron compound. | 12-03-2009 |
20100028529 | SUBSTRATE PROCESSING APPARATUS, AND MAGNETIC RECORDING MEDIUM MANUFACTURING METHOD - The present invention provides a substrate processing apparatus capable of suppressing mutual contamination and/or damage of the insides of ion beam generators arranged opposite each other via a substrate, and a magnetic recording medium manufacturing method. A substrate processing apparatus according to an embodiment of the present invention includes a first ion beam generator that applies an ion beam to one surface to be processed of a substrate, and a second ion beam generator that applies an ion beam to another surface to be processed, which are arranged opposite each other via the substrate, and a first grid in the first ion beam generator, and a second grid in the second ion beam generator are configured so as to be asymmetrical to each other. | 02-04-2010 |
20100040772 | Method of manufacturing a magnetic recording medium - A method of manufacturing a magnetic recording medium that includes a nonmagnetic underlayer, a magnetic layer, a protective layer, and a lubricant layer sequentially laminated on a nonmagnetic substrate. The method includes applying a lubricant onto the protective layer to form the lubricant layer, which includes ejecting shots of a heated lubricant liquid onto the protective layer from a nozzle. The heated lubricant liquid contains a perfluoropolyether lubricant, and each shot is of a quantity in a range of 0.1 to 10 pico liters. | 02-18-2010 |
20100068377 | COATING FORMULATION AND APPLICATION OF ORGANIC PASSIVATION LAYER ONTO IRON-BASED RARE EARTH POWDERS - The present disclosure relates to coating formulations for neodymium-iron-boron type magnetic powders manufactured from rapid solidification processes for the purpose, inter alia, of corrosion and oxidation resistance when exposed to aggressive environments. The coating formulation preferably contains an epoxy binder, curing agent, an accelerating agent, and a lubricant. By incorporating coupling agents and optionally, other specialty additives with the magnetic powder and the organic epoxy components, additional oxidation and corrosion prevention, enhanced adhesion and dispersion between the filler and matrix phases can be achieved. This disclosure relates to all such rare earth-transition metal-boron (RE-TM-B) powders produced by rapid solidification and encompasses both the bonded magnet products that include combinations of the materials mentioned and the application processes. | 03-18-2010 |
20100092660 | RARE EARTH MAGNET AND METHOD FOR PRODUCING SAME - 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 R | 04-15-2010 |
20100104742 | SYSTEM, METHOD AND APPARATUS FOR A NEAT STATE LUBRICANT BLEND HAVING IMPROVED PROCESSIBILITY WITHOUT DIMINISHING PERFORMANCE OF MAGNETIC RECORDING MEDIA - A neat lubricant blend for magnetic media improves lubricant processibility without negatively impacting media performance. The lubricant blend combines, in their neat states, a high bonding lubricant having a molecular weight of about 2000, and a low bonding lubricant with a molecular weight below 1000. The low molecular weight lubricant evaporates after lubrication, leaving only the high molecular weight lubricant behind. Media performance such as lubricant pickup is not adversely affected. Mixing the two types of lubricants in their neat states improves solubility in the less expensive solvents. | 04-29-2010 |
20100119702 | METHOD AND APPARATUS FOR HANDLING MAGNETIC DISKS - An apparatus and method for handling disks as part of a magnetic disk manufacturing process is provided. In one embodiment, during a drying process the disks are engaged at the inner diameter rather than the outer diameter to eliminate the formation of residue on the surface of the disks at or proximate data zones. The disks may be engaged individually or in pairs. | 05-13-2010 |
20100119703 | METHOD FOR MAKING NDFEB SINTERED MAGNET - The objective of the present invention is to provide a method for making a NdFeB sintered magnet, capable of enhancing the effect of increasing the coercive force and preventing the instability of the effects, and in addition, being inexpensive. The method for making a NdFeB sintered magnet according to the present invention has processes of coating a NdFeB sintered magnet with a powder containing Dy and/or Tb, then heating the NdFeB sintered magnet, and thereby diffusing R | 05-13-2010 |
20100129538 | PROCESS FOR PRODUCING MAGNET - The invention provides a process for producing a magnet that not only allows satisfactory Br and HcJ values to be achieved but can also yield a magnet with a sufficiently large squareness ratio. The process for producing a magnet according to the invention is characterized by comprising a first step in which a heavy rare earth compound containing a heavy rare earth element is adhered onto a rare earth magnet sintered compact, and a second step in which the heavy rare earth compound-adhered sintered compact is subjected to heat treatment. The heavy rare earth compound is a hydride of the heavy rare earth element. | 05-27-2010 |
20100129539 | SUBSTRATE HOLDER MOUNTING DEVICE AND SUBSTRATE HOLDER CONTAINER CHAMBER - A substrate holder mounting device is provided that is compact and has a simple structure. The substrate holder mounting device according to the present invention is provided with: a first and a second mounting mechanisms ( | 05-27-2010 |
20100159129 | COATING METHOD AND APPARATUS, A PERMANENT MAGNET, AND MANUFACTURING METHOD THEREOF - The object of the present invention is to improve the productivity of a permanent magnet and to manufacture it at a low cost by effectively coating Dy and Tb on a surface of the magnet of Fe—B-rare earth elements having a predetermined configuration. The permanent magnet of the present invention is manufactured by a coating step for coating Dy on the surface of the magnet of Fe—B-rare earth elements having a predetermined configuration and a diffusing step for diffusing Dy coated on the surface of the magnet into crystal grain boundary phases of the magnet with being heat treated at a predetermined temperature. In this case, the coating step comprises a first step for heating a process chamber used for carrying out the coating step and generating metallic vapor atmosphere within the process chamber by vaporizing vaporizable metallic material previously arranged within the process chamber, and a second step for introducing into the process chamber the magnet held at a temperature lower than that within the process chamber and then selectively depositing the vaporizable metallic material on a surface of the magnet by an effect of temperature difference between the temperature within the process chamber and that of the magnet by the magnet reaches a predetermined temperature. | 06-24-2010 |
20100189885 | SOLVENT COMPOSITIONS COMPRISING UNSATURATED FLUORINATED HYDROCARBONS - Disclosed is a method for removing residue from a surface comprising: contacting the surface with a composition comprising at least one unsaturated fluorinated hydrocarbon selected from the group consisting of compounds having the formula E- or Z—R | 07-29-2010 |
20100221416 | SYSTEM, METHOD AND APPARATUS FOR COMBINING THE PROCESSES OF LUBRICATION AND FINAL TAPE POLISH FOR MAGNETIC MEDIA - The manufacturing processes of lubrication and final tape polish (FTP) for magnetic media are combined into a single operation. A modified disk loading conveyor performs both lubricant dipping and FTP by immersing a cassette of disks in a lube bath. A single disk is lubed as it is unloaded. Upon unload, the lubed disk is put on an FTP spindle for polishing. After FTP, the disk is put in an empty cassette adjacent the lube bath. An automatic lift transports fill or empty cassettes into or out of the lube bath, respectively. | 09-02-2010 |
20100227048 | Spinel-type ferrimagnetic particles, process for producing the same, and magnetic recording medium using the same - Spinel-type ferrimagnetic particles having a composition represented by the formula: | 09-09-2010 |
20100227049 | MAGNETIC HEAD HAVING SELECTIVELY DEFINED READER GAP THICKNESSES - A method for fabricating a magnetic head having multiple readers includes forming a plurality of generally laterally positioned lower shields; forming a lower gap layer above each lower shield; forming a sensor above each lower gap layer; forming an upper gap layer above each sensor; and forming an upper shield above each upper gap layer; wherein an overall gap thickness is defined between vertically aligned pairs of the upper and lower shields, wherein the overall gap thickness between one of the pairs of upper and lower shields is thicker than the overall gap thickness between another of the pairs of upper and lower shields. | 09-09-2010 |
20100247752 | Photocurable resin composition for forming overcoats rgb pixels black matrixes or spacers in color filter production, and color filters - A curable resin composition containing as the binder a fumarate copolymer which is excellent in thermal discoloration resistance and capable of forming details of a color filter, namely, a photocurable resin composition useful in forming overcoats, RGB pixels, black matrixes or spacers in the production of color filters, which contains as the binder a fumarate copolymer having a molecular structure comprising constituent units represented by the general formula (1) and constituent units having acidic functional groups, and preferably further containing constituent units having ethylenically unsaturated bonds: (1) wherein R | 09-30-2010 |
20100255188 | SOFT MAGNETIC MATERIAL, POWDER MAGNETIC CORE AND METHOD OF MANUFACTURING SOFT MAGNETIC MATERIAL - A soft magnetic material is a soft magnetic material including a composite magnetic particle ( | 10-07-2010 |
20100266754 | SYSTEMS AND METHODS FOR PROCESSING A MAGNETIC DISK - A system and associated methods are described for preparing a magnetic disk for installation within a disk drive system. For example, a polyfunctional lubricant may be mixed with a chemical agent to esterify the polyfunctional lubricant and cap hydroxyl groups of the polyfunctional lubricant. The magnetic disk may then be dip coated with the polyfunctional lubricant and chemical agent mixture. A polishing system then polishes the magnetic disk via an abrasive polishing tape after dip coating the magnetic disk. A portion of the chemical agent is then removed from the magnetic disk to bond a portion of the lubricant to the magnetic disk to prevent the lubricant from interfering with a read/write head when installed within a disk drive system. | 10-21-2010 |
20100291294 | Method of fabricating magnetic head slider including partial removal step of protecting film - The method of fabricating a magnetic head slider includes steps of: forming a first protective film on an air bearing surface of a magnetic head slider on which either a recording element or a reproduction element is formed or on which both a recording element and a reproduction element are formed; removing a portion of the first protective film to reduce the thickness of the first protective film and forming a second protective film over the first protective film that has been reduced in thickness; and forming an uneven portion for controlling the flying characteristics of the magnetic head slider on the air bearing surface of the magnetic head slider; wherein the formation of the uneven portion is carried out after the first protective film has been formed and before the second protective film is formed, or after the second protective film has been formed. | 11-18-2010 |
20100297343 | TREATING AGENT FOR FORMING A FLUORIDE COATING FILM AND METHOD FOR FORMING A FLUORIDE COATING FILM - A fluoride coating film formed with a fluoride-containing solution wherein a rare earth fluoride or an alkaline earth metal fluoride, in particular, fluoride of Pr, Nd, Dy, Tb and Ho, is swollen in a solvent comprising a major amount of an alcohol, and the solution is a colloidal solution in which the rare earth fluoride or the alkaline earth metal fluoride is dispersed homogeneously in the solvent comprising a major amount of an alcohol improves magnetic properties of NdFeB rare earth magnets including not only sintered magnets but also bonded magnets. | 11-25-2010 |
20100330270 | METHOD OF MANUFACTURING A MAGNETIC RECORDING MEDIUM - A method of manufacturing a magnetic recording medium includes providing a substrate that is a magnetic recording medium substrate having a disc shape, having two main surfaces, and having defined therein a center hole; holding the center hole of the substrate from both main surfaces with two holding members that each have a disc shape to hold the substrate and to cover at least the periphery of the center hole adjacent to the two main surfaces of the substrate; and applying resist liquid simultaneously to both main surfaces of the substrate using spin coating to form a resist layer simultaneously on both main surfaces while maintaining the periphery of the center hole immediately adjacent to the two main surfaces of the substrate resist-free as an unapplied portion. The method enables efficient formation of uniform resist layers without defects on both faces of the substrate. | 12-30-2010 |
20110033612 | DISC VAPOR LUBRICATION - A method comprising introducing a workpiece support into a chamber of an apparatus. The workpiece support is for supporting thereon a plurality of workpieces. The apparatus comprising: the chamber having an interior space configured to be maintained at a pressure below atmospheric pressure; a vapor source for supplying the interior space of the chamber with a linearly extending stream of lubricant vapor; the workpiece support for supporting thereon a plurality of workpieces with surfaces facing the vapor source; and a conveyor for continuously moving the workpiece support transversely past the linearly extending stream of lubricant vapor from the vapor source. The method also comprising continuously moving the workpiece support with the plurality of workpieces supported thereon transversely past the linearly extending stream of lubricant vapor from the vapor source and depositing a uniform thickness film of the lubricant on at least one surface of each of the plurality of workpieces. | 02-10-2011 |
20110045174 | SOFT MAGNETIC MATERIAL AND DUST CORE - A method of producing a soft magnetic material is disclosed, wherein the method includes forming a plurality of metal magnetic particles having a ratio of a maximum diameter to an equivalent circle diameter greater than 1.0 and at most 1.3, forming irregularities on a surface of each of the plurality of metal magnetic particles such that a specific surface area of each of the plurality of metal magnetic particles is at least 0.10 m | 02-24-2011 |
20110052799 | METHOD OF RECYCLING SCRAP MAGNET - The method has the steps of: grinding a recovered scrap magnet which is an iron-boron-rare earth-based sintered magnet, thereby obtaining a scrap-derived recovered raw material powder; obtaining a sintered body from the scrap-derived recovered raw material powder by a powder metallurgy method; and processing the sintered body. The processing includes the steps of: heating the sintered body disposed in a processing chamber; evaporating a metal evaporating material containing at least one of Dy and Tb in which the metal evaporating material is disposed in the same or another processing chamber; adhering metal atoms evaporated in the evaporating step to a surface of the sintered body while controlling a supply amount of the evaporated metal atoms; and diffusing the adhered metal atoms into grain boundaries and/or grain boundary phases of the sintered body. | 03-03-2011 |
20110217456 | MAGNETIC CATALYST AND METHOD FOR MANUFACTURING THE SAME - Disclosed is a magnetic catalyst formed by a single or multiple nano metal shells wrapping a carrier, wherein at least one of the metal shells is iron, cobalt, or nickel. The magnetic catalyst with high catalyst efficiency can be applied in a hydrogen supply device, and the device can be connected to a fuel cell. Because the magnetic catalyst can be recycled by a magnet after generating hydrogen, the practicability of the noble metals such as Ru with high catalyst efficiency is dramatically enhanced. | 09-08-2011 |
20110262633 | LUBRICANT DEPOSITION ONTO MAGNETIC MEDIA - A method, in one embodiment, can include pumping a gas into a reservoir that includes a lubricant. In addition, the method can include changing the gas into a supercritical fluid that extracts lubricant molecules from the lubricant resulting in a mixture of the supercritical fluid and the lubricant molecules. Furthermore, the method can include utilizing the mixture to deposit a lubricant molecule onto a magnetic media. | 10-27-2011 |
20110274832 | METHOD FOR SILICA ENCAPSULATION OF MAGNETIC PARTICLES - Provided is a method of inhibiting magnetically induced aggregation of ferrimagnetic and/or ferromagnetic nanoparticles by encapsulating the nanoparticles in a silica shell. The method entails coating magnetic nanoparticle surfaces with a polyacid polymer to form polymer-coated magnetic nanoparticles and treating the polymer-coated magnetic nanoparticles with a silica precursor to form uniform silica-coated magnetic nanoparticles. By controlling the thickness of the silica encapsulating the nanoparticles, the inherent magnetically induced aggregation of the nanoparticles can be completely inhibited. | 11-10-2011 |
20110287177 | VACUUM PROCESSING APPARATUS, SUBSTRATE ROTATION APPARATUS, AND DEPOSITION METHOD - An apparatus for rotating a substrate having a center hole, comprises a pickup member configured to hold the substrate by holding an edge of the center hole, and a driving unit configured to drive the pickup member, wherein the driving unit is configured to insert the pickup member into the center hole so as not to bring the pickup member into contact with the substrate, to drive the pickup member upward so that the pickup member holds the edge of the center hole from below, and thereupon to rotate the pickup member so as to rotate the substrate, and in rotating the substrate, the driving unit rotates the pickup member about a rotation axis which is perpendicular to a principal surface of the substrate and passes through the center of the substrate. | 11-24-2011 |
20120058258 | METHODS OF CLEANING HARD DRIVE DISK SUBSTRATES FOR NANOIMPRINT LITHOGRAPHY - Post sputter cleaning of hard disk substrates for use in an imprint lithography processes. The cleaning removes contaminants including organic contaminants that otherwise may cause repeating void (non-fill) defects in the imprinted pattern. | 03-08-2012 |
20120070567 | METHOD FOR PRODUCING SOFT MAGNETIC METAL POWDER COATED WITH MG-CONTAINING OXIDE FILM AND METHOD FOR PRODUCING COMPOSITE SOFT MAGNETIC MATERIAL USING SAID POWDER - A method for producing a soft magnetic metal powder coated with a Mg-containing oxide film, comprising the steps of adding and mixing a Mg powder with a soft magnetic metal powder which has been subjected to heating treatment in an oxidizing atmosphere at a temperature of 40 to 500° C. to obtain a mixed powder, and heating the mixed powder at a temperature of 150 to 1,100° C. in an inert gas or vacuum atmosphere under a pressure of 1×10 | 03-22-2012 |
20120100287 | LAMINAR FLOW PLATING RACK - A plating apparatus includes a vessel and a rack operable to be positioned inside the vessel. The rack includes a number of mandrels including a number of substrate mounting surfaces. The number of mandrels is non-revolving with respect to the rack. The rack further includes a number of gears coupled with the number of mandrels. A partition separates the number of gears from the number of mandrels. A diffuser is positioned below the rack. The diffuser is operable to produce a substantially uniform laminar flow of a fluid from a bottom to a top of the vessel. Thus, the laminar flow may reduce dead zones in the bath and remove defect-causing particles and gases away from the substrate. | 04-26-2012 |
20120114844 | PROCESS FOR PRODUCTION OF R-Fe-B-BASED RARE EARTH SINTERED MAGNET, AND STEAM CONTROL MEMBER - A sintered R—Fe—B based rare-earth magnet body | 05-10-2012 |
20120164320 | MANUFACTURING METHOD OF SOFT MAGNETIC MATERIAL AND MANUFACTURING METHOD OF DUST CORE - 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. | 06-28-2012 |
20120295018 | METHOD FOR PRODUCING AND DEVICE FOR PRODUCING MAGNETIC RECORDING MEDIUM - 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. The hanger device includes a support plate of which an upper end comes into contact with an inner circumference of the magnetic recording medium and a liquid-cutting plate which extends from a lower end of the support plate and is distant by a space along the inner circumference of the magnetic recording medium from the inner circumference of the magnetic recording medium. | 11-22-2012 |
20120308721 | MAGNETIC RECORDING MEDIUM MANUFACTURING APPARATUS - 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 ( | 12-06-2012 |
20130040050 | APPLICATOR FOR GRAIN BOUNDARY DIFFUSION PROCESS - 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. | 02-14-2013 |
20130071558 | CORE-SHELL NANOPARTICLES WITH MULTIPLE CORES AND A METHOD FOR FABRICATING THEM - The present invention is directed toward core-shell nanoparticles, each comprising a ligand-capped metal shell surrounding a plurality of discrete, nonconcentric, metal-containing cores. Methods of making and using these nanoparticles are also disclosed. | 03-21-2013 |
20130078369 | PRODUCTION METHOD OF RARE EARTH MAGNET | 03-28-2013 |
20130084385 | METHOD FOR PRODUCING CORE-SHELL MAGNETIC ALLOY NANOPARTICLE - A method for producing core-shell magnetic alloy nanoparticle, comprising: step 1, dissolving nickel compound to produce solution; step 2, adding surfactant into the solution; step 3, dissolving the first reducing agent to produce the first reducing solution; step 4, adding the first reducing solution into the solution obtained from step 2, obtaining nickel nano-collosol by stirring and aging; step 5, adding metallic compound into the nickel nano-collosol; step 6, dissolving the second reducing agent to produce the second reducing solution; step 7, adding the second reducing solution into the mixed solution obtained from step 5; step 8, allow the product to stand, then discarding the supernatant, redispersing in water or absolute ethyl alcohol to obtain the core-shell magnetic alloy nanoparticle using nickel as the core. | 04-04-2013 |
20130171342 | R-T-B SINTERED MAGNET MANUFACTURING METHOD - [Problem] To provide a heavy rare-earth element RH diffusion process that contributes greatly to mass production. | 07-04-2013 |
20130189426 | METHOD FOR PRODUCING SINTERED NDFEB MAGNET - A method for producing a sintered NdFeB magnet having high coercivity and capable of being brought into applications without lowering its residual magnetic flux density or maximum energy product and without reprocessing. The method includes applying a substance containing dysprosium (Dy) and/or terbium (Tb) to the surface of the sintered NdFeB magnet forming a base body and then heating the magnet to diffuse Dy and/or Tb through the grain boundary and thereby increase the coercivity of the magnet. This method is characterized in that: (1) the substance containing Dy or Tb to be applied to the surface of the sintered NdFeB magnet is substantially a metal powder; (2) the metal powder is composed of a rare-earth element R and an iron-group transition element T, or composed of R, T and another element X, the element X capable of forming an alloy or intermetallic compound with R and/or T; and (3) the oxygen content of the sintered NdFeB magnet forming the base body is 5000 ppm or lower. The element T may contain nickel (Ni) or cobalt (Co) to produce an anticorrosion effect. | 07-25-2013 |
20130216702 | METHODS FOR MANUFACTURING A MAGNETORESISTIVE STRUCTURE UTILIZING HEATING AND COOLING - This invention describes a novel tunnel magnetoresistive (TMR) deposition process that can enhance the signal-to-noise ratio (SNR) of a TMR reader. A method of manufacturing a tunnel magnetoresistive sensor includes providing a substrate; forming a first portion of a magnetic tunnel junction (MTJ) structure on the substrate; forming a second portion of the MTJ structure on the substrate; forming a tunnel barrier layer of the MTJ structure between the first portion and the second portion; heating the first portion of the MTJ structure before forming the tunnel barrier layer or after forming at least a portion of the tunnel barrier layer; and cooling the tunnel barrier layer. | 08-22-2013 |
20130344237 | GRAPHENE NANOCOMPOSITES - A nanocomposite material for use as an electromagnetic wave or radio frequency absorber or as a filter to trap or remove heavy metals. The nanocomposite material may be made with a one-pot synthesis, or thermodecomposition process, of magnetic graphene nanocomposites decorated with core-double-shell nanoparticles, wherein the double shell iron nanoparticles may comprise a crystalline iron core, an inner iron oxide layer around the crystalline iron core, and an outermost amorphous Si—S—O compound shell around the iron oxide layer. | 12-26-2013 |
20140010955 | METHOD OF PRODUCING ALPHA-FE/R2TM14B-TYPE NANOCOMPOSITE MAGNET - There is provided a method of producing an α-Fe/R | 01-09-2014 |
20140093641 | LUBRICANT COMPOSITIONS CONTAINING FLUOROOXIRANES - An lubricant composition comprising a C | 04-03-2014 |
20140120248 | RH DIFFUSION SOURCE, AND METHOD FOR PRODUCING R-T-B-BASED SINTERED MAGNET USING SAME - [Problem] To provide a method for producing a sintered R-T-B based magnet which can get a heavy rare-earth element RH diffused efficiently inside a sintered R-T-B based magnet body. | 05-01-2014 |
20140212577 | MAGNETIC RECORDING MEDIUM FABRICATION METHOD AND APPARATUS - A method of fabricating a magnetic recording medium by sequentially forming a magnetic recording layer, a protection layer, and a lubricant layer on a stacked body, includes forming the lubricant by depositing a first lubricant on the stacked body after forming the protection layer, by vapor-phase lubrication deposition, without exposing the stacked body to atmosphere, and depositing a second lubricant on the stacked body after depositing the first lubricant, by vapor-phase lubrication deposition, without exposing the stacked body to atmosphere. | 07-31-2014 |
20140242267 | RARE-EARTH MAGNET AND METHOD FOR PRODUCING THE SAME - Provided is a rare-earth magnet containing no heavy rare-earth metals such as Dy or Tb in a grain boundary phase, has a modifying alloy for increasing coercivity (in particular, coercivity under a high-temperature atmosphere) infiltrated thereinto at lower temperature than in the conventional rare-earth magnets, has high coercivity, and has relatively high magnetizability, and a production method therefor. The rare-earth magnet RM includes a RE-Fe—B-based main phase MP with a nanocrystalline structure (where RE is at least one of Nd or Pr) and a grain boundary phase BP around the main phase, the grain boundary phase containing a RE-X alloy (where X is a metallic element other than heavy rare-earth elements). Crystal grains of the main phase MP are oriented along the anisotropy axis, and each crystal grain of the main phase, when viewed from a direction perpendicular to the anisotropy axis, has a plane that is quadrilateral in shape or has a close shape thereto. | 08-28-2014 |
20140272119 | FUNCTIONALLY GRADED POLYMER ARTICLES AND METHODS OF MAKING SAME - Disclosed herein are methods for manufacturing a functionally graded polymer material. The methods comprise preparing a melted polymer mixture comprising a thermoplastic polymer and a magnetic filler dispersed in the thermoplastic polymer, molding the melted polymer mixture and applying a magnetic field to a portion of the melted polymer mixture to form a functionally graded polymer material. The resulting functionally graded polymer material has a magnetic filler gradient formed through a thickness of the material. | 09-18-2014 |
20140272120 | METHOD FOR PRODUCING A SMOOTH RU SIDE GAP OF A DAMASCENE WRITER POLE - The present invention generally relates to a method for forming a smooth gap of a damascene write pole. An opening having a side wall with a first angle with respect to vertical is formed in a fill layer, and a first non-magnetic layer is deposited into the opening by ion beam deposition. The ion beam is delivered to the side wall at a second angle with respect to vertical. The ratio of the first angle to the second angle ranges from about 250 to about 3.5. | 09-18-2014 |
20140295072 | MAGNETIC RECORDING MEDIUM FABRICATION METHOD - A method of fabricating a magnetic recording medium includes forming the lubricant by depositing a first lubricant on the stacked body after forming the protection layer, by vapor-phase lubrication deposition, without exposing the stacked body to atmosphere, and depositing a second lubricant that is dissolved in an organic solvent onto the stacked body after depositing the first lubricant. A molecular mass of a compound included in the first lubricant is higher than that of the second lubricant, and a chemical polarity of the compound included in the first lubricant is lower than that of the second lubricant. | 10-02-2014 |
20140308438 | Composition and Method of Application to Reduce Magnetostriction Losses in Encapsulated Microelectronic Components - A buffer material protects a microelectronic device in space constrained environments, for improved efficiency with respect to magnetostrictive materials therein, and includes a gas filled polymer shell microsphere carried in an elastomeric polymer binder. Expanded Expancel microspheres being less than 20 microns in diameter form 80% of the composition by volume. The polymer binder is a low viscosity dimethyl silicone with a hardness of less than 25. Coating thicknesses may be based upon the overall expected dimensional changes of the encapsulation material, due to its coefficient of thermal expansion and an expected operating temperature range of the component, plus the expected shrinkage of that encapsulation material during polymerization and the overall mass which shall be exerting a force upon the magnetic core, plus the dimensional changes of the component as a result of the flux density resulting in magnetostriction of the magnetic core. | 10-16-2014 |
20140308439 | METHOD OF PROTECTING PATIERNED MAGNETIC MATERIALS OF A STACK - 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. | 10-16-2014 |
20140308440 | METHOD FOR MAKING NdFeB SINTERED MAGNET - A method for making a NdFeB sintered magnet, capable of enhancing the effect of increasing the coercive force and preventing the instability of the effects, and in addition, being inexpensive is provided. The method for making a NdFeB sintered magnet has processes of coating a NdFeB sintered magnet with a powder containing Dy and/or Tb, then heating the NdFeB sintered magnet, and thereby diffusing R | 10-16-2014 |
20140329007 | PROCESS FOR PRODUCING SINTERED R-T-B MAGNET - A method according to the present disclosure includes the steps of: stacking RH diffusion sources and sintered R-T-B based magnet bodies alternately one upon the other with a flat plate holding member having openings interposed between each pair of the diffusion source and the magnet body, thereby forming a multilayer structure; loading the multilayer structure in a process vessel; (A) performing an RH supply-diffusion process at a pressure of 2.0 Pa to 50 Pa and at a temperature of 800° C. to 950° C. in the process vessel; and (B) performing an RH diffusion process at a pressure of 150 Pa to 2 kPa and at a temperature of 800° C. to 950° C. in the process vessel. The method includes the step of carrying out the steps (A) and (B) alternately and repeatedly at least twice. | 11-06-2014 |
20140335268 | RARE EARTH SINTERED MAGNET, METHOD FOR PRODUCING SAME, MOTOR AND AUTOMOBILE - A rare earth sintered magnet | 11-13-2014 |
20140342085 | MATERIAL FOR USE IN A TMR READ GAP WITHOUT ADVERSELY AFFECTING THE TMR EFFECT - Structures and methods for fabrication servo and data heads of tape modules are provided. The servo head may have two shield layers spaced apart by a plurality of gap layers and a sensor. Similarly, the data head may have two shield layers spaced apart by a plurality of gap layers and a sensor. The distance between the shield layers of the servo head may be greater than the distance between the shield layers of the data head. The material of the gap layers may include tantalum or an alloy of nickel and chromium. The material for the gap layers permits deposition of gap layers with sufficiently small surface roughness to prevent distortion of the tape module and increase the stability of the tape module operation. | 11-20-2014 |
20150010698 | METHOD OF MANUFACTURING HEXAGONAL FERRITE MAGNETIC PARTICLES - The method of manufacturing hexagonal ferrite magnetic particles comprises applying an adhering matter comprising a glass component and an alkaline earth metal to hexagonal ferrite magnetic particles, and subjecting the hexagonal ferrite magnetic particles to which the adhering matter has been applied to a heat treatment. | 01-08-2015 |
20150093501 | RARE EARTH MAGNET AND ITS PREPARATION - A rare earth magnet is prepared by disposing a R | 04-02-2015 |
20150099064 | PATTERN FORMATION METHOD AND MAGNETIC RECORDING MEDIUM MANUFACTURING METHOD - According to one embodiment, a pattern formation method includes forming a surface treatment polymer film on a substrate, applying a solution containing a monomer or oligomer of a surface treatment polymer material to a surface of the surface treatment polymer film, forming a self-assembled layer by coating the surface treatment polymer film with a coating solution containing a block copolymer having at least two types of polymer chains, and forming a microphase-separated structure in the self-assembled layer by annealing, and optionally removing one type of a polymer layer from the microphase-separated structure, thereby forming convex patterns by a remaining polymer layer. | 04-09-2015 |
20150125597 | IN-LINE TYPE FILM FORMING APPARATUS AND METHOD OF MANUFACTURING MAGNETIC RECORDING MEDIUM USING THE SAME - Provided is an in-line type film forming apparatus including a processing chamber which is disposed to deviate from a closed path and is connected to a corner chamber, a first loading and unloading unit which unloads a substrate from a carrier and moves the substrate to the inside of the processing chamber, a second loading and unloading unit which unloads the substrate processed in the processing chamber and loads the substrate on the carrier, and a control device which performs control of driving the first and second loading and unloading units to unload the substrate from the carrier and to move the substrate to the inside of the processing chamber, and to take out the substrate processed in the processing chamber in advance from the processing chamber and to load the substrate on the carrier. | 05-07-2015 |
20160030968 | COATING DEVICE AND COATING METHOD - A coating device includes: a first roll including a roll surface on which an application liquid is deposited; a first scratch off member configured to scratch off the application liquid from the roll surface of the first roll; a second roll including a roll surface configured to contact with the roll surface of the first roll, wherein the second roll is configured to rotate in a rotation direction opposite to a rotation direction of the first roll, the application liquid is transferred from the roll surface of the first roll to the roll surface of the second roll, and the second roll is configured to transfer the transferred application liquid to a steel strip; and a second scratch off member configured to scratch off the application liquid from the roll surface of the second roll. | 02-04-2016 |
20160032130 | METHOD OF MANUFACTURING POLYMER COATED FERROMAGNETIC PARTICLES - A method of manufacturing a polymer coated single ferromagnetic particle is provided. The method includes hydrophobizing one single hydrophilic ferromagnetic particle by absorbing an aliphatic acid having a hydrophobic aliphatic group and a hydrophilic acid group onto the single ferromagnetic particle to obtain a single hydrophobic ferromagnetic particle; emulsifying the one single hydrophobic ferromagnetic particle with a monomer liquid comprising a nonionic surface activating agent which re-hydrophilizes the one single hydrophobic ferromagnetic particle, to obtain an emulsified liquid; adding a radical addition initiator to the emulsified liquid; and emulsion polymerizing the monomer by radical addition polymerization. | 02-04-2016 |
20160133292 | DENSITY MULTIPLICATION AND IMPROVED LITHOGRAPHY BY DIRECTED BLOCK COPOLYMER ASSEMBLY - Methods to pattern substrates with dense periodic nanostructures that combine top-down lithographic tools and self-assembling block copolymer materials are provided. According to various embodiments, the methods involve chemically patterning a substrate, depositing a block copolymer film on the chemically patterned imaging layer, and allowing the block copolymer to self-assemble in the presence of the chemically patterned substrate, thereby producing a pattern in the block copolymer film that is improved over the substrate pattern in terms feature size, shape, and uniformity, as well as regular spacing between arrays of features and between the features within each array compared to the substrate pattern. In certain embodiments, the density and total number of pattern features in the block copolymer film is also increased. High density and quality nanoimprint templates and other nanopatterned structures are also provided. | 05-12-2016 |