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Class 428/826 - Thin film media


Subclass of Class 428 - Stock material or miscellaneous articles
Definition: Subject matter in which the media or magnetizable material
No. of patents: 84
Last issue date: 01/17/2012


1      
NumberTitleIssue Date
8097351Magnetic recording apparatus
A magnetic recording apparatus has a magnetic recording media including a substrate and a magnetic layer containing magnetic patterns on the substrate, the magnetic layer including data zones to constitute recoding tracks and servo zones, the magnetic patterns of th...
01/17/2012
8003236Method for making a master mold with high bit-aspect-ratio for nanoimprinting patterned magnetic recording disks, master mold made by the method, and disk imprinted by the master mold
A method for making a master mold to be used for nanoimprinting patterned-media magnetic recording disks results in a master mold having topographic pillars arranged in a pattern of annular bands of concentric rings. The ratio of circumferential density of the pilla...
08/23/2011
7981533Method for making a master disk for nanoimprinting patterned magnetic recording disks and master disk made by the method
A method for making a master disk to be used for nanoimprinting patterned-media magnetic recording disks uses sidewall lithography. In one implementation, the master disk substrate has a first pattern of concentric rings formed on it by sidewall lithography, followe...
07/19/2011
7960044Patterned-media perpendicular magnetic recording disk with servo regions having magnetized servo pillars and oppositely-magnetized servo trenches
A patterned perpendicular magnetic recording disk has a pre-patterned disk substrate with pillars and trenches arranged in data regions and servo regions. In the data regions, the height of the data pillars is equal to or greater than the spacing between the data pi...
06/14/2011
7833639Magnetic recording medium and method for manufacturing magnetic recording medium
A magnetic recording medium for perpendicular magnetic recording includes a substrate, a granular layer having magnetic crystal grains exhibiting perpendicular magnetic anisotropy and nonmagnetic substances for magnetically separating the magnetic crystal grains fro...
11/16/2010
7820311Ferroelectric recording medium and writing method for the same
A ferroelectric recording medium and a writing method for the same are provided. The ferroelectric recording medium includes a ferroelectric layer which reverses its polarization when receiving a predetermined coercive voltage. A nonvolatile anisotrophic conduction ...
10/26/2010
7803470High-frequency magnetic thin film and high-frequency electronic device
One inventive aspect relates to a high-frequency magnetic thin film capable of working in a GHz-level band, and an electronic device comprising the film. The film comprises a magnetic layer and an insulating layer that are laminated alternately. The magnetic layer i...
09/28/2010
7794861Patterned media, method of manufacturing magnetic recording medium, and method of manufacturing a base
To provide patterned media having novel structure. Plural convex members 2991 are provided in an array form on a substrate 2990. The convex member has a shape such that the cross section at each plane in parallel to the substrate tapers toward the subs...
09/14/2010
7781078Method and system for magnetic recording using self-organized magnetic nanoparticles
A method and system for magnetic recording using self-organized magnetic nanoparticles is disclosed. The method may include depositing surfactant coated nanoparticles on a substrate, wherein the surfactant coated nanoparticles represent first bits of recorded inform...
08/24/2010
7758981Method for making a master disk for nanoimprinting patterned magnetic recording disks, master disk made by the method, and disk imprinted by the master disk
A method for making a master disk to be used for nanoimprinting patterned-media magnetic recording disks uses sidewall lithography. In one implementation, the master disk substrate has a first pattern of concentric rings formed on it by sidewall lithography, followe...
07/20/2010
7754354Patterned medium and method of manufacturing the same
A patterned medium and a method of manufacturing the same are provided. The patterned medium includes a data region having a plurality of recording dots arrayed along a plurality of tracks; and a non-data region comprising a part of the patterned medium other than t...
07/13/2010
7732069Thin SUL media with shielded pole head
A disk drive system having a shielded pole write head and media that includes a disk having a soft underlayer (SUL) that is relatively thin in order to save on cost for producing the SUL. The SUL is thin enough that it will become magnetically saturated in the vicin...
06/08/2010
7674535Magnetic transfer master disk, its manufacturing method and magnetic transfer method
The present invention provides a magnetic transfer master disk comprising: a master substrate formed by a metal plate, on a surface of which a protruding and recessed pattern corresponding to transfer information is transferred by electroforming, the metal plate bei...
03/09/2010
7670693Magnetic recording medium possessing a columnar structure
The present invention provides a magnetic recording medium that excels in electromagnetic conversion characteristics. The magnetic recording medium has a 55 nm or less thickness magnetic layer formed on a major surface of an elongated nonmagnetic support by performi...
03/02/2010
7597972Magnetic recording medium including a patterned intermediate layer and a non-patterned soft magnetic layer and manufacturing method thereof
A magnetic recording medium is provided which has good recording/reproducing characteristics with a recording layer divided in a number of recording elements by a predetermined concavo-convex pattern, and a manufacturing method that enables efficient manufacture of ...
10/06/2009
7459222Magnetoresistive medium including nanowires
A magnetoresistive medium (1) includes a substrate (2) which has been treated to provide a miscut vicinal surface (3) in the form of terraces (4) and steps (5) of atomic and nanometer scale. There are discrete separated spacer nano...
12/02/2008
7438982Magnetic recording medium including disk substrate, magnetic layer, and non-magnetic layer
A magnetic recording medium includes at least a disk substrate, a magnetic recording layer formed with a predetermined concavo-convex pattern on the disk substrate, and a non-magnetic layer formed in concave portions of the concavo-convex pattern. Convex shapes made...
10/21/2008
7369336Master carrier for magnetic transfer
A master carrier for magnetic transfer having a data region and a servo pattern region that has a pattern of fine projections arrayed in the track direction thereof in accordance with the preformat signal information to be transferred onto an in-plane magnetic recor...
05/06/2008
7368187Thermally stable low noise magnetic recording media
A magnetic recording medium which is thermally stable and produces low media noise. By providing a plurality of intermediate layers made of a CoCr alloy of which saturation magnetic flux densities are controlled within a predetermined range, the magnetic recording m...
05/06/2008
7366009Separate write and read access architecture for a magnetic tunnel junction
A magnetoresistive device is provided with separate read and write architecture. In one embodiment, a magnetic tunnel junction (MTJ) has a nonmagnetic nonconductive barrier layer sandwiched between two ferromagnetic conducting layers. A first read line is coupled to...
04/29/2008
7361419Substrate for a perpendicular magnetic recording medium, perpendicular magnetic recording medium, and manufacturing methods thereof
A substrate for a perpendicular magnetic recording medium has a soft magnetic underlayer that functions as a soft magnetic backing layer of a perpendicular magnetic recording medium. The substrate for a perpendicular magnetic recording medium has a nonmagnetic base ...
04/22/2008
7354630Use of oxygen-containing gases in fabrication of granular perpendicular magnetic recording media
A granular perpendicular magnetic recording medium, comprising: (a) a non-magnetic substrate having a surface; and (b) a layer stack on the substrate surface, the layer stack including a granular perpendicular magn...
04/08/2008
7351484High field contrast magnetic stampers/imprinters for contact patterning of magnetic media
A high field contrast magnetic stamper/imprinter for use in patterning of magnetic and magneto-optical (MO) recording media by contact printing, comprises: (a) a layer of a magnetic material having a high saturation magnetization B...
04/01/2008
7314675Magnetic media with high Ms magnetic layer
Magnetic recording media having a magnetic layer, wherein the magnetic layer comprises a continuous matrix material and a separate portion that is different from the matrix is disclosed. The matrix comprises a non-ferromagnetic material that is non-ferromagnetic in ...
01/01/2008
7286324Cobalt-platinum or iron-plantinum magnetic material containing 1% to 40% Cu, Ni or B
A CoPt- or FePt-alloy magnetic material in which a temperature to transform into an L10-ordered alloy is reduced and magnetic anisotropy energy is controlled, and a method for manufacturing the magnetic material are provided. In a CoPt- or FePt-alloy magn...
10/23/2007
7273667Longitudinal multi-layer magnetic recording medium
A magnetic recording medium capable of attaining high in-plane recording density of 100 Mbits or more per 1 mm2 is provided. Magnetic recording medium is provided in which underlayers, a first magnetic layer, a first intermediate layer, a second magnetic ...
09/25/2007
7258893Method of fabricating a magnetic recording medium
A method of fabricating a magnetic recording medium is disclosed, including a monomolecular film formation step of forming a monomolecular film on a substrate and a magnetic film formation step of forming on the monomolecular film a magnetic film for recording magne...
08/21/2007
7252812High-yield method of endohedrally encapsulating species inside fluorinated fullerene nanocages
This invention is directed to the fluorination (or derivatization with alternative chemical species) of fullerene carbon nanocages as an efficient way to (a) facilitate synthesis of endohedral complexes by a significant reduction or elimination of the barriers for t...
08/07/2007
7236324Apparatus, method and system for fabricating servo patterns on high density patterned media
An apparatus, system, and method are disclosed for utilizing a “shadow mask” approach to fabricate servo patterns on high density patterned media. The apparatus may include a deposition mask having a plurality of apertures generated by a conventional lithographi...
06/26/2007
7195827Perpendicular magnetic recording medium
A perpendicular magnetic recording medium includes a substrate, an underlayer formed on the substrate, and containing at least one element selected from the group A consisting of Pt, Pd, Rh, Ag, Au, Ir and Fe, and at least one element or compound selected from the g...
03/27/2007
7182974Magnetic recording medium and its manufacturing method and magnetic recording system using such a magnetic recording medium
A magnetic recording medium having a high coercive force and being capable of high-density writing/reading has a substrate, a soft magnetic layer, a non-magnetic intermediate layer, a magnetic layer, a protective layer, and a lubricating layer. The magnetic layer is...
02/27/2007
7183013Magnetic recording medium and manufacturing method thereof
A nonmagnetic foundation layer is made to have a body-centered cubic crystal structure with a preferred crystal orientation plane being the bcc (110) plane. A nonmagnetic intermediate layer, provided between the foundation layer and a granular magnetic layer, has a ...
02/27/2007
7166376Magnetic recording medium including a high-magnetostriction layer and magnetic recording/reproducing apparatus
A multi-layer including a magnetic recording layer and a high-magnetostriction layer having a magnetostriction constant larger than that of the magnetic recording layer is formed. ...
01/23/2007
7167342Magnetic recording medium, magnetic recording playback device, and information processing device
A magnetic recording medium is provided while including a recording layer in which magnetic materials are in the shape of a circular cylinder and uniformity and size reduction are achieved simultaneously. The magnetic recording medium includes a recording layer and ...
01/23/2007
7164548Magnetic recording medium and method of manufacturing magnetic recording medium
A magnetic recording medium and a method of manufacturing the same which serve for stable head behavior and efficient recording of servo information. In each servo area, a magnetic layer is separated into a plurality of servo pattern unit parts for forming a predete...
01/16/2007
7158346Heat assisted magnetic recording film including superparamagnetic nanoparticles dispersed in an antiferromagnetic or ferrimagnetic matrix
Heat assisted magnetic recording systems with composite recording films are disclosed. The magnetic recording films include superparamagnetic nanoparticles dispersed in an antiferromagnetic or ferrimagnetic matrix. The matrix provides antiferromagnetic coupling with...
01/02/2007
7147916Magnetic material, method for producing the same, and magnetic recording medium
A magnetic material having a structure of a material having a ferromagnetic phase at ordinary temperature as a core and a material having an antiferromagnetic phase at ordinary temperature surrounding the periphery of the core in the form of a shell, wherein a ratio...
12/12/2006
7149045Longitudinal media with soft underlayer and perpendicular write head
A magnetic recording device including a longitudinal magnetic recording medium. The longitudinal magnetic recording medium includes a magnetically soft underlayer disposed under a longitudinal recording layer. A perpendicular write head is utilized to write data to ...
12/12/2006
7138193Data storage medium with laterally magnetized pad and method for making same
An information storage medium with an array of laterally magnetized dots, as well as a process for producing this medium is disclosed. Each dot (2) contains at least one magnetic domain formed by a thin layer (4) of at least a magnetic material lateral...
11/21/2006
7136252Magnetic recording and reproducing apparatus with recording layer having predetermined convex-concave pattern
In the present invention, with respect to a convex-concave structure necessary for respective functions of a servo area in a perpendicular magnetic recording medium, a specification of configuration and magnetic property of a convex-concave magnetic layer of the per...
11/14/2006
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