Class / Patent application number | Description | Number of patent applications / Date published |
428831000 | Single magnetic layer having two or more nonmagnetic underlayers (e.g., seed layers, barrier layers, etc.) | 52 |
20080206601 | PERPENDICULAR MAGNETIC RECORDING MEDIUM AND METHOD OF MANUFACTURING THE SAME - A perpendicular magnetic recording medium includes a substrate, a first underlayer formed over the substrate and formed of ruthenium or a ruthenium alloy with crystal grains growing approximately perpendicular to the substrate and isolated from one another in an in-plane direction by a first air gap, a recording layer placed over the first underlayer and formed of magnetic crystal grains growing approximately perpendicular to the substrate and isolated one another in the in-plane direction by a second air gap, and a grain size dispersion preventing layer inserted between the recording layer and the first underlayer, the grain size dispersion preventing layer including crystal grains of a cobalt-based alloy growing approximately perpendicular to the substrate and an oxide isolating the crystal grains of the cobalt-based alloy from one another in the in-plane direction. | 08-28-2008 |
20080213629 | PERPENDICULAR MAGNETIC RECORDING MEDIUM HAVING AN INTERLAYER FORMED FROM A NiWCr ALLOY - Perpendicular magnetic recording media and methods of fabricating perpendicular magnetic recording media are described. The perpendicular magnetic recording medium of one embodiment includes an interlayer, an underlayer, and a perpendicular magnetic recording layer. The interlayer is formed from a NiWCr alloy. | 09-04-2008 |
20080268292 | Hexagonal close-packed ceramic seedlayers for perpendicular magnetic recording media - A magnetic recording medium is provided, comprising a substrate, a hexagonal close-packed seedlayer deposited over the substrate, a hexagonal close-packed underlayer deposited over the seedlayer, and a hexagonal close-packed recording layer deposited over the underlayer. The seedlayer is comprised of a ceramic. A method of manufacturing a magnetic recording medium is also provided, comprising the steps of sputtering a first sputter target to deposit a hexagonal close-packed seedlayer over a substrate, sputtering a second sputter target to deposit a hexagonal close-packed underlayer over the seedlayer, and sputtering a third sputter target to deposit a hexagonal close-packed magnetic recording layer over the underlayer. The seedlayer comprises a ceramic. | 10-30-2008 |
20080292908 | PERPENDICULAR MAGNETIC RECORDING MEDIUM, METHOD OF MANUFACTURING PERPENDICULAR MAGNETIC RECORDING MEDIUM, AND MAGNETIC RECORDING APPARATUS - A perpendicular magnetic recording medium having a substrate, a soft magnetic buffer layer formed on the substrate, an Ru/Ru alloy underlayer formed on the soft magnetic buffer layer, the Ru/Ru alloy underlayer including Ru or a Ru alloy, a recording layer formed on the Ru/Ru alloy underlayer, the recording layer including at least a layer including a plurality of magnetic particles having an easy axis oriented perpendicular to the substrate, and a non-magnetic material surrounding the plural magnetic particles, and a layered structure interposed between the soft magnetic buffer layer and the Ru/Ru alloy underlayer, the layered structure including at least an Ru/Ru alloy crystalline structure film including Ru or a Ru alloy, a first polycrystalline film including Ru or a Ru alloy, and a second polycrystalline film. | 11-27-2008 |
20090029190 | PERPENDICULAR MAGNETIC RECORDING MEDIUM, PRODUCTION PROCESS THEREOF, AND PERPENDICULAR MAGNETIC RECORDING AND REPRODUCING APPARATUS - A process for producing a perpendicular magnetic recording medium comprises forming metallic nuclei or a seed layer on a non-magnetic substrate, and forming a soft magnetic under layer on the metallic nuclei or the seed layer by means of electroless plating. The soft magnetic under layer is formed while an external parallel magnetic field is applied to the non-magnetic substrate, and the substrate is rotated such that the substrate is maintained parallel to the parallel magnetic field. | 01-29-2009 |
20090068499 | MAGNETIC RECORDING MEDIUM, PRODUCTION PROCESS THEREOF, AND MAGNETIC RECORDING AND REPRODUCING APPARATUS - There is provided a magnetic recording medium formed on an aluminum substrate (Al—Mg alloy), provided with texture striations and a plated layer of NiP, which has magnetic recording medium has magnetic anisotropy in the circumferential direction, and has a high retentivity, a high squareness ratio, and favorable electromagnetic transfer characteristics, a production method thereof, and a magnetic recording and reproducing apparatus. The magnetic recording medium comprises at least an orientation control layer, a nonmagnetic undercoat layer, a magnetic layer, and a protective layer in this order on the aluminum substrate. The orientation control layer contains any one or more component types selected from among Co, Ni, and Fe, and any one or more component types selected from among W, Mo, Ta and Nb. | 03-12-2009 |
20090142621 | CHROMIUM NITRIDE LAYER FOR MAGNETIC RECORDING MEDIUM - A magnetic recording media with a multilayer structure and methods for forming the media are described. The magnetic recording media includes a substrate, an underlayer on top of the substrate and a magnetic layer over the underlayer. The underlayer includes a CrN film formed by sputter depositing chromium in the presence of nitrogen or nitrogen containing compounds. | 06-04-2009 |
20090142622 | MAGNETIC RECORDING MEDIUM - The present invention provides a magnetic recording medium comprising an undercoating layer comprising a radiation-curable compound that has been cured by irradiation with radiation, a nonmagnetic layer comprising a nonmagnetic powder and a binder, and a magnetic layer comprising a ferromagnetic powder and a binder in this order on a nonmagnetic support, wherein the magnetic layer and/or the nonmagnetic layer comprise a carbonic ester denoted by general formula (1), and the undercoating layer has an indentation hardness lower than that of the nonmagnetic support. | 06-04-2009 |
20090162702 | PERPENDICULAR MAGNETIC RECORDING MEDIUM AND METHOD FOR FABRICATING THE SAME - A magnetic recording medium is provided in the present invention. The magnetic recording medium including a substrate; a base layer disposed on the substrate; an intermediate layer disposed on the base layer; and a recording layer disposed on the intermediate layer and including a magnetic matrix and a plurality of non-magnetic particles percolated in the magnetic matrix. | 06-25-2009 |
20090181264 | METHOD FOR MANUFACTURING PATTERNED MAGNETIC RECORDING MEDIUM - A method for manufacturing a patterned magnetic recording medium that allows processing only required sites with high precision, in a dry etching process during formation of an uneven pattern in an interlayer. The method includes forming sequentially, on a substrate, a soft magnetic layer, an etching stop layer, a seed layer, an interlayer, a hard mask layer and a resist; obtaining a resist pattern by patterning the resist; obtaining a patterned hard mask layer by etching the hard mask layer using the resist pattern as a mask; stripping the resist pattern; obtaining a patterned interlayer by etching the interlayer using the patterned hard mask layer as a mask; stripping the patterned hard mask layer; and forming a magnetic recording layer by forming a perpendicular orientation section on the patterned interlayer, and forming a random orientation section on the seed layer. | 07-16-2009 |
20100104893 | Media for recording devices - Improvements to magnetic recording device including magnetic recording media are described. The improvements include the addition of copper to the recording layer as well as improved underlayers. In addition, improved manufacturing processes and magnetic/recording properties for media through heating and oxidation are described. | 04-29-2010 |
20100159284 | Magnetic recording capping layer with multiple layers for controlling anisotropy for perpendicular recording media - A method is described for improving recording performance of a perpendicular media. The method includes controlling the anisotropy levels in different sublayers of the magnetic recording layers of the perpendicular media. Further, the different sublayers thicknesses can be altered to match the media to a particular head. | 06-24-2010 |
20100196741 | METHOD OF MANUFACTURING A PERPENDICULAR MAGNETIC RECORDING MEDIUM - [Problems] To provide a process for producing a magnetic recording medium, which can simultaneously realize increased high recording density, high impact resistance, and prevention of corrosion, by providing an underlayer which, even when formed at a low gas pressure, can exhibit a high level of coercive force. | 08-05-2010 |
20100285336 | MAGNETIC STORAGE MEDIUM FORMED OF CARBON NANOTUBE ARRAYS - A magnetic storage medium is formed of magnetic nanoparticles that are encapsulated within carbon nanotubes, which are arranged in a substrate to facilitate the reading and writing of information by a read/write head. The substrate may be flexible or rigid. Information is stored on the magnetic nanoparticles via the read/write head of a storage device. These magnetic nanoparticles are arranged into data tracks to store information through encapsulation within the carbon nanotubes. As carbon nanotubes are bendable, the carbon nanotubes may be arranged on flexible or rigid substrates, such as a polymer tape or disk for flexible media, or a glass substrate for rigid disk. A polymer may assist holding the nano-particle filled carbon-tubes to the substrate. | 11-11-2010 |
20110020669 | MAGNETIC RECORDING MEDIUM - A magnetic recording medium having excellent stability of recorded magnetic signals and capable of recording magnetic signals by a thermally assisted magnetic recording system in which a magnetic recording layer of the magnetic recording medium contains ferromagnetic crystal grains of a Co—Ni—Pt alloy with a Pt content of 44 at % or more and 55 at % or less and with an atom content ratio: Ni/(Co+Ni) of 0.64 or more and 0.8 or less. The magnetic recording medium has extremely excellent stability of recorded magnetic signals since the Co—Ni—Pt alloy constituting the magnetic recording layer has an extremely high anisotropy field at a normal temperature. Further, the magnetic recording medium can perform signal recording based on the thermally assisted magnetic recording system since the Co—Ni—Pt alloy constituting the magnetic recording layer has a Curie point within an appropriate temperature range. | 01-27-2011 |
20110129692 | MAGNETIC ALLOY MATERIALS WITH HCP STABILIZED MICROSTRUCTURE, MAGNETIC RECORDING MEDIA COMPRISING SAME, AND FABRICATION METHOD THEREFOR - A magnetic recording medium comprises:
| 06-02-2011 |
20110171495 | PERPENDICULAR MAGNETIC RECORDING MEDIUM - An object is to provide a perpendicular magnetic recording medium including a ground layer that prevents corrosion, while achieving a primary object of promoting finer magnetic particles of a magnetic recording layer and isolation of these magnetic particles. | 07-14-2011 |
20110229738 | BIAXIALLY ORIENTED POLYESTER FILM AND MAGNETIC RECORDING TAPE - A biaxially oriented polyester film which has a Young's modulus (YMD) in the film machine direction (YMD) of 6.5 GPa or more and a Young's modulus in the width direction (YTD) of 8.2 to 9.8 GPa and is used as a base film for magnetic recording tapes of linear recording system, and a magnetic recording tape of linear recording system comprising the same as a base film. | 09-22-2011 |
20120082866 | PATTERNED TEMPLATE WITH 1xN NUCLEATION SITE TO GRAIN GROWTH FOR UNIFORM GRAIN SIZE RECORDING MEDIA - A perpendicular magnetic media includes a substrate, a patterned template, a seed layer and a magnetic layer. The patterned template is formed on the substrate and includes a plurality of growth sites that are evenly spaced apart from each other. The seed layer is formed over the patterned template and the exposed areas of the substrate. Magnetic material is sputter deposited onto the seed layer with one grain of the magnetic material nucleated over each of the growth sites. The grain size distribution of the magnetic material is reduced by controlling the locations of the growth sites which optimizes the performance of the perpendicular magnetic media. | 04-05-2012 |
20120107646 | PLANARIZED MAGNETIC RECORDING DISK WITH PRE-PATTERNED SURFACE FEATURES AND SECURE ADHESION OF PLANARIZING FILL MATERIAL AND METHOD FOR PLANARIZING THE DISK - 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 (SiO | 05-03-2012 |
20120141835 | Perpendicular Magnetic Recording Disk - [Problem] A perpendicular magnetic disk with an improved SNR and increased recording density by further advancing microfabrication and uniformalization of particle diameters and improving crystal orientation regarding a preliminary ground layer made of a Ni-base alloy is provided. | 06-07-2012 |
20120141836 | GRANULAR PERPENDICULAR MEDIA INTERLAYER FOR A STORAGE DEVICE - An apparatus and method are provided for improving perpendicular magnetic recording media. The present invention provides media, and a method of fabricating media in a cost-effective manner, with a reduced ruthenium (Ru) content interlayer structure, while meeting media performance requirements. A perpendicular magnetic recording medium is provided comprising a non-magnetic substrate having a surface, and a layer stack situated on the substrate surface. The layer stack comprises, in overlying sequence from the substrate surface a magnetically soft underlayer; an amorphous or crystalline, non-magnetic seed layer; an interlayer structure for crystallographically orienting a layer of a perpendicular magnetic recording material situated on the underlayer; and at least one crystallographically oriented, magnetically hard, perpendicular magnetic recording layer situated on the interlayer structure. The interlayer structure is a stacked structure comprising, in overlying sequence: a chromium alloy situated on the seed layer; and an upper interlayer situated on the chromium alloy. | 06-07-2012 |
20120276415 | Magnetic Element With Reduced Shield-To-Shieldl Spacing - A magnetic element has a magnetically responsive lamination with a ferromagnetic free layer separated from a synthetic antiferromagnetic (SAF) layer by a spacer layer and from a sensed data bit stored in an adjacent medium by an air bearing surface (ABS). The lamination is coupled to at least one antiferromagnetic (AFM) tab a predetermined offset distance from the ABS. | 11-01-2012 |
20130071694 | INTERLAYERS FOR MAGNETIC RECORDING MEDIA - Embodiments of the present invention include a recording medium comprising: a hard magnetic recording layer and an interlayer disposed under the hard magnetic recording layer, wherein the interlayer comprises an upper layer of Ru-based alloy and a lower layer of RuCo or ReCo alloy. Generally for embodiments of the present invention, the lower layer of RuCo or ReCo alloy is formed over a seed layer using a low-pressure sputter process, and the upper layer of Ru-based alloy is formed over the lower layer using a high-pressure sputter process. | 03-21-2013 |
20130071695 | Hybrid Grain Boundary Additives in Granular Media - Magnetic layers are described that include the use of magnetic grains and non-magnetic grain boundaries with hybrid additives. Hybrid additives include the use of at least two different additives in the composition of the grain boundaries of a magnetic layer in magnetic recording media. The use of hybrid additives in the grain boundaries results in improved recording media. Methods for forming magnetic layers and magnetic recording media with the hybrid additive grain boundaries are also described. | 03-21-2013 |
20130209836 | PERPENDICULAR MAGNETIC RECORDING MEDIUM AND METHOD OF MANUFACTURING SAME - A perpendicular magnetic recording medium exhibits reduced noise and improved performance in such measures as SN ratio, and can realize high magnetic recording densities. In the perpendicular magnetic recording medium, at least a first nonmagnetic intermediate layer, second nonmagnetic intermediate layer, and magnetic recording layer are stacked in order on a nonmagnetic substrate. The first nonmagnetic intermediate layer is formed from a CoCrRuW alloy, and the second nonmagnetic intermediate layer is formed from an Ru-base alloy. | 08-15-2013 |
20140037992 | MAGNETIC RANDOM ACCESS MEMORY WITH SYNTHETIC ANTIFERROMAGNETIC STORAGE LAYERS - A synthetic antiferromagnetic device includes a reference layer, a magnesium oxide spacer layer disposed on the reference layer, a cobalt iron boron layer disposed on the magnesium oxide spacer layer, and a first ruthenium layer disposed on cobalt iron boron layer, the first ruthenium layer having a thickness of approximately 0 Å to 32 Å. | 02-06-2014 |
20140072828 | PERPENDICULAR MAGNETIC RECORDING MEDIUM AND METHOD FOR MANUFACTURING THE SAME - Provided are a perpendicular magnetic recording medium and a method for manufacturing the same, the perpendicular magnetic recording medium including an alloy (FePt, FePd, or CoPt) having a large K | 03-13-2014 |
20140093748 | MAGNETIC STACK INCLUDING TiN-X INTERMEDIATE LAYER - A magnetic stack includes a substrate, a magnetic recording layer, and a TiN—X layer disposed between the substrate and the magnetic recording layer. In the TiN—X layer, X is a dopant comprising at least one of MgO, TiO, TiO | 04-03-2014 |
20140099517 | RECORDING MEDIUM FOR HEAT-ASSISTED-MAGNETIC-RECORDING (HAMR) AND METHOD FOR MANUFACTURING THE SAME - According to embodiments of the present invention, a method for manufacturing a recording medium for heat-assisted-magnetic-recording (HAMR) is provided. The method includes forming an underlayer on a substrate, the underlayer including a precursor material, epitaxially depositing an interlayer on the underlayer, forming a recording layer over the interlayer, and converting the precursor material to a converted material having a thermal conductivity that is higher than a thermal conductivity of the recording layer. According to further embodiments of the present invention, another method for manufacturing a recording medium for heat-assisted-magnetic-recording (HAMR) and a recording medium for heat-assisted-magnetic-recording (HAMR) are also provided. | 04-10-2014 |
20140287268 | CoPtCr-BASED BIT PATTERNED MAGNETIC DEVICE - Provided herein is an apparatus, including a plurality of spaced apart perpendicular magnetic elements. Each of the magnetic elements includes a respective discrete magnetic domain and each of the magnetic elements includes a magnetic recording layer comprising a Co | 09-25-2014 |
20140342189 | MAGNETIC RECORDING MEDIUM AND METHOD OF PRODUCING THE SAME - There is provided a magnetic recording medium including a base; a seed layer; a foundation layer; and a recording layer, the seed layer being disposed between the base and the foundation layer, having an amorphous state, including an alloy containing Ti, Cr and O, a percentage of Ti being 30 atomic % to 100 atomic % based on a total amount of Ti and Cr contained in the seed layer, and a percentage of O being 15 atomic % or less based on a total amount of Ti, Cr and O contained in the seed layer. Also, a production method thereof is provided. | 11-20-2014 |
20140363700 | MAGNETIC RECORDING MEDIUM - A magnetic recording medium includes a substrate, a seed layer, an under layer, and a perpendicular recording layer having a granular structure. (Ms·α·δ | 12-11-2014 |
20150024238 | HARD MAGNETIC EXCHANGE-COUPLED COMPOSITE STRUCTURES AND PERPENDICULAR MAGNETIC RECORDING MEDIA INCLUDING THE SAME - Hard magnetic exchange-coupled composite structures and perpendicular magnetic recording media including the hard magnetic exchange-coupled composite structures, include a ferrite crystal grain and a soft magnetic metal thin film bounded to the ferrite crystal grain by interfacial bonding on an atomic scale and having a thickness of about 5 nm or less, wherein a region of the soft magnetic metal thin film adjacent to an interface with the ferrite crystal grain includes an amorphous soft magnetic metal film. | 01-22-2015 |
20150132609 | Perpendicularly Magnetized Ultrathin Film Exhibiting High Perpendicular Magnetic Anisotropy, Method for Manufacturing Same, and Application - Provided are an element structure in which a magnetic layer has a high magnetic anisotropy constant and saturated magnetization properties in a thickness of 1.5 nm or less, and a magnetic device that uses the element structure. A BCC metal nitride/CoFeB/MgO film structure that uses a nitride of a BCC metal as a seed layer is fabricated. The nitride amount in the BCC metal nitride is preferably less than 60% in terms of volume ratio based on 100% BCC metal. It is thereby possible to readily obtain a perpendicularly magnetized film having the magnetic properties that the perpendicular magnetic anisotropy is 0.1×10 | 05-14-2015 |
20160148634 | MAGNETIC RECORDING MEDIA WITH IMPROVED GRAIN COLUMNAR GROWTH FOR ENERGY ASSISTED MAGNETIC RECORDING - Systems and methods for forming magnetic recording media with improved columnar growth for energy assisted magnetic recording are provided. In one such method, a first sub-layer of a magnetic layer is formed on a substrate, the magnetic layer including a magnetic material and a plurality of non-magnetic segregants, a top surface of the first sub-layer is etched to substantially remove the non-magnetic segregants accumulated on the top surface, and a second sub-layer of the magnetic layer is formed on the first sub-layer. | 05-26-2016 |
428831100 | Including NiP underlayer | 2 |
20080268293 | MAGNETIC RECORDING MEDIUM, METHOD FOR MANUFACTURING THE SAME, AND MAGNETIC RECORDING APPARATUS - According to an aspect of an embodiment, a magnetic recording medium includes a soft under layer, a seed layer containing an alloy, placed over the soft under layer, a ruthenium containing layer containing crystalline Ru, directly placed on the seed layer, and a recording layer placed over the ruthenium containing layer. The alloy contains metal atoms bonded to one another with a minimum distance of adjacent atoms. The difference between the minimum distance of the atoms in the alloy and that of the atoms in the crystalline Ru is 2% or less. | 10-30-2008 |
20140072829 | THIN FILM STRUCTURE INCLUDING ORDERED ALLOY AND METHOD FOR MANUFACTURING THE THIN FILM STRUCTURE - The present invention provides: a thin film structure including an ordered alloy in which atoms are orderly arranged using an inexpensive substrate; and a method for manufacturing the thin film structure. Specifically, the thin film structure includes a substrate, a plating layer formed on the substrate and made of one selected from the group consisting of NiPMo and NiPW, and an ordered alloy disposed on the plating layer. The method for manufacturing the thin film structure includes the steps of: forming a plating layer on a substrate, the plating layer being made of one selected from the group consisting of NiPMo and NiPW; and forming an ordered alloy on the plating layer. The vacuum degree immediately before the ordered alloy is formed is 7.0×10 | 03-13-2014 |
428831200 | Specified physical structure of underlayer (e.g., texture, etc.) | 14 |
20090274932 | Sputtered metal film recording medium including texture promotion layer - A sputtered metal film recording medium includes a substrate, a texture promotion layer sputtered on a first side of the substrate, a seed layer deposited on the texture promotion layer, an intermediate layer including a chromium alloy deposited on the seed layer, and a longitudinal magnetic recording layer including a cobalt alloy deposited on the intermediate layer. The texture promotion layer configures in-plane orientation of a cobalt structure in the magnetic recording layer. | 11-05-2009 |
20110151280 | PERPENDICULAR MAGNETIC RECORDING MEDIUM, METHOD FOR PRODUCING THE SAME, AND MAGNETIC RECORDING/REPRODUCING DEVICE - A perpendicular magnetic recording medium including at least a soft under layer, an orientation control layer, a magnetic recording layer and a protective layer on a non-magnetic substrate, wherein the orientation control layer is composed of three or more layers including a seed layer, a first intermediate layer and a second intermediate layer sequentially, formed in that order from the substrate side, the crystal grains that constitute the first intermediate layer are epitaxially grown on the crystal grains of the seed layer, the crystal grains that constitute the second intermediate layer are epitaxially grown on the crystal grains of the first intermediate layer, and the crystal grains that constitute the second intermediate layer are finer than the crystal grains that constitute the first intermediate layer. | 06-23-2011 |
20130040167 | PERPENDICULAR MAGNETIC RECORDING MEDIUM AND ITS MANUFACTURING METHOD - It is aimed to provide a perpendicular magnetic recording medium capable of dealing with an ultra-higher recording density than before and its manufacturing method. | 02-14-2013 |
20140127533 | PATTERNED TEMPLATE WITH 1xN NUCLEATION SITE TO GRAIN GROWTH FOR UNIFORM GRAIN SIZE RECORDING MEDIA - A perpendicular magnetic media includes a substrate, a patterned template, a seed layer and a magnetic layer. The patterned template is formed on the substrate and includes a plurality of growth sites that are evenly spaced apart from each other. The seed layer is formed over the patterned template and the exposed areas of the substrate. Magnetic material is sputter deposited onto the seed layer with one grain of the magnetic material nucleated over each of the growth sites. The grain size distribution of the magnetic material is reduced by controlling the locations of the growth sites which optimizes the performance of the perpendicular magnetic media. | 05-08-2014 |
20140186658 | Interlayer comprising chromium-containing alloy - An apparatus and method are provided for improving perpendicular magnetic recording media. The present invention provides media, and a method of fabricating media in a cost-effective manner, with a reduced ruthenium (Ru) content interlayer structure, while meeting media performance requirements. A perpendicular magnetic recording medium is provided comprising a non-magnetic substrate having a surface, and a layer stack situated on the substrate surface. The layer stack comprises, in overlying sequence from the substrate surface a magnetically soft underlayer; an amorphous or crystalline, non-magnetic seed layer; an interlayer structure for crystallographically orienting a layer of a perpendicular magnetic recording material situated on the underlayer; and at least one crystallographically oriented, magnetically hard, perpendicular magnetic recording layer situated on the interlayer structure. The interlayer structure is a stacked structure comprising, in overlying sequence: a chromium alloy situated on the seed layer; and an upper interlayer situated on the chromium alloy. | 07-03-2014 |
20140308542 | MAGNETIC RECORDING MEDIUM AND MAGNETIC STORAGE APPARATUS - A magnetic recording medium includes a substrate, multiple underlayers formed on the substrate, and a magnetic layer formed on the multiple underlayers. A main component of the magnetic layer is an alloy having a L1 | 10-16-2014 |
20140329112 | MAGNETIC RECORDING MEDIUM - A magnetic recording medium includes a flexible substrate, an amorphous seed layer, an under layer containing Ru, and a recording layer having a granular structure. The seed layer is provided between the substrate and the under layer. The under layer has a thickness in a range of 5 to 50 nm. | 11-06-2014 |
20150017481 | BIT PATTERNED GROWTH GUIDING MECHANISM - The embodiments disclose a structure, including a first layer selectively etched on a substrate with a seedlayer deposited thereon, a first layer bit patterned growth guiding mechanism on the seedlayer, and a plurality of bit patterned magnetic recording features grown on the seedlayer guided by the growth guiding mechanism. | 01-15-2015 |
20150093598 | MAGNETIC STACK INCLUDING MgO-Ti(ON) INTERLAYER - A stack includes a substrate and a magnetic recording layer. Disposed between the substrate and magnetic recording layer is an MgO—Ti(ON) layer. | 04-02-2015 |
20160027461 | METHOD FOR FORMING PARTICLE LAYER AND METHOD FOR MANUFACTURING MAGNETIC RECORDING MEDIUM - A method for forming a particle layer includes covering surfaces of particles with a first polymer, covering a surface of a substrate with a second polymer having a same skeletal structure as the first polymer, and applying a liquid in which the particles covered with the first polymer are dispersed, onto the surface of the substrate covered with the second polymer. | 01-28-2016 |
20160027462 | MAGNETIC RECORDING MEDIUM MANUFACTURING METHOD - According to one embodiment, there is provided a magnetic recording medium manufacturing method including forming a bonding layer on a substrate, forming a holding layer containing silicon on the bonding layer, forming a single-particle layer on the holding layer using particles containing metal fusible on the bonding layer, etching SiO | 01-28-2016 |
20160099016 | MAGNETIC STACK INCLUDING MgO-Ti(ON) INTERLAYER - A stack includes a substrate and a magnetic recording layer. Disposed between the substrate and magnetic recording layer is an MgO—Ti(ON) layer. | 04-07-2016 |
20160099018 | MAGNETIC RECORDING MEDIUM - A magnetic recording medium includes a flexible substrate, an amorphous seed layer, an under layer containing Ru, and a recording layer having a granular structure. The seed layer is provided between the substrate and the under layer. The under layer has a thickness in a range of 5 to 50 nm. | 04-07-2016 |
20160125904 | PERPENDICULAR MAGNETIC RECORDING DISK WITH PATTERNED TEMPLATE LAYER - A perpendicular magnetic recording (PMR) disk has a patterned template layer for the growth of the magnetic grains and the nonmagnetic material surrounding the grains. The template layer is a substantially planar platinum (Pt) or palladium (Pd) layer that is patterned to have Pt or Pd regions arranged in a hexagonal-close-packed (hcp) pattern with the Pt or Pd regions surrounded by Pt-oxide or Pd-oxide regions. The two separate regions of the template layer have different surface chemistries and energies, which provide a “chemical contrast” to impinging atoms during deposition of the metallic magnetic material and nonmagnetic (typically oxide) material, effectively guiding the deposition. The metallic magnetic material is preferentially deposited on the pristine, epitaxial Pt or Pd regions to form the magnetic grains, while the oxide migrates to the oxidized Pt or Pd regions due to the matching of lower surface energy. | 05-05-2016 |