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8119263 |
Tuning exchange coupling in magnetic recording media
A magnetic recording medium having a substrate, a first magnetic layer and a second magnetic layer, in this order, wherein an exchange coupling in the first magnetic layer is lower than an exchange...
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8034470 |
Perpendicular magnetic recording medium and method of manufacturing the medium
A perpendicular magnetic recording medium is disclosed in which a soft magnetic layer used as a low Ku layer can be stably produced with high performance. Thermal stabilization of magnetization,...
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8021771 |
Composite heat assisted magnetic recording media with temperature tuned intergranular exchange
A thin film structure including a plurality of grains of a first magnetic material having a first Curie temperature embedded in a matrix of a second material having a second Curie temperature,...
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7976966 |
Magnetic tape formed of carbon nanotube arrays containing magnetic nanoparticles
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...
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7879470 |
Apparatus, system, and method for the selection of perpendicular media segregant materials
A method for improving magnetic grain segregation in perpendicular recording media includes providing a substrate comprising a rigid support structure, depositing a soft underlayer on top of the...
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7862913 |
Oxide magnetic recording layers for perpendicular recording media
An improved structure for the construction of perpendicular recording media is disclosed. The structure includes a perpendicular recording layer with at least two oxide sublayers or a lower...
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7862915 |
Magnetic recording medium and magnetic recording/reproducing apparatus
According to one embodiment, a multilayered underlayer including a first underlayer containing Cu aligned in a (111) plane and a second underlayer formed on the Cu underlayer and containing Cu and...
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7846564 |
Perpendicular magnetic recording media with magnetic anisotropy/coercivity gradient and local exchange coupling
A perpendicular magnetic recording medium adapted for high recording density and high data recording rate comprises a non-magnetic substrate having at least one surface with a layer stack formed...
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7732005 |
Method for producing recording medium, recording medium employing said method, and information recording and reproducing apparatus
A method for producing a recording medium provides good throughput for mass production and reduces cost. The method facilitates the control of the shape or dimensions of a pattern obtained by...
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7718282 |
Magnetic recording medium with corrosion resistance and manufacturing method
A magnetic recording medium with a granular magnetic recording layer excellent in corrosion resistance is provided. In one embodiment, after formation of, on a non-magnetic substrate, an NiTa...
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7691499 |
Corrosion-resistant granular magnetic media with improved recording performance and methods of manufacturing same
A corrosion-resistant granular magnetic recording medium with improved recording performance comprises a non-magnetic substrate having a surface; and a layer stack on the substrate surface,...
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7687160 |
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...
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7579095 |
Differentially oriented patterned magnetic media
A structure has a substrate and a layer containing a magnetic material dispersed in a nonmagnetic material, the magnetic material being comprised of first crystal particles having an easy...
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7531248 |
Perpendicular recording magnetic media having a granular magnetic recording layer and an amorphous soft underlayer
A perpendicular magnetic recording medium having a substrate, an amorphous soft underlayer of thickness 30 nm or greater, and a granular magnetic recording layer for perpendicular recording is...
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7510788 |
Perpendicular magnetic recording medium utilizing a first cobalt magnetic layer and a second Pd-SiOx layer and method of manufacturing same
A perpendicular magnetic recording medium is disclosed that exhibits reduced media noise and enhanced thermal stability of recorded magnetization, and thus provides a medium of high recording...
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7429427 |
Granular magnetic recording media with improved grain segregation and corrosion resistance
Disclosed are granular magnetic recording media with improved grain segregation and corrosion resistance, comprising a non-magnetic substrate and at least one granular magnetic recording layer...
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7241519 |
Magnetic recording medium with columar magnetic layer
Provided is a magnetic recording medium capable of achieving higher density recording. The magnetic recording medium comprises a magnetic layer formed on a non-magnetic base through vacuum oblique...
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6846543 |
Thin film magnetic recording disk with ruthenium-aluminum layer
A magnetic thin film disk for use in a disk drive with a ruthenium-aluminum (RuAl) seed layer with B2 structure followed by a NiAl layer is described. The disk has reduced noise and increased...
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RE38544 |
Thin film magnetic alloy having low noise, high coercivity and high squareness
A Co-Pt based magnetic alloy which has been doped with a relatively high amount of nitrogen, e.g., or above 1 at. % is obtained having high coercivity, for example in the range of 1400 Oe or above,...
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6696172 |
Recording medium and method for manufacturing the same
A magnetic recording medium has at least a non-magnetic under-layer, a magnetic layer, a protective layer and a liquid lubricant layer sequentially laminated on a non-magnetic substrate. The...
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6641934 |
High density information recording medium, and manufacturing method of the same medium
To present an information recording medium for achieving high density information recording, in particular, a high signal output and a high resolution in magnetic recording, for example, an...
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6638647 |
Vertical recording medium with thin soft magnetic film
A vertical magnetic recording medium includes a soft magnetic film formed on a substrate, and a vertical magnetization film formed on the soft magnetic film. μ·δb≧1000, when μ is a perme...
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6607612 |
Magnetic alloy and magnetic recording medium and method for preparation thereof, and target for forming magnetic film and magnetic recording device
The magnetic alloy includes cobalt (Co), chromium (Cr), and germanium (Ge), the composition of the magnetic alloy being represented by the general formula: CoxCryGezwhere x, y and z, which...
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6432503 |
Magnetic recording medium
A magnetic recording medium is described, which comprises a support having thereon a magnetic layer comprising a ferromagnetic metal powder dispersed in a binder, which is a magnetic recording...
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6251230 |
Method and device for manufacturing a thin film and magnestic recording medium
A method and a device for manufacturing a thin film by a vacuum deposition method, and a magnetic recording medium produced thereby are disclosed. A thin film of high quality is mass-produced while...
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6242085 |
Magnetic recording medium and method for producing the same
An underlying layer is formed of Cr or the like on a glass substrate, and a magnetic layer is formed on the underlying layer by simultaneously sputtering a magnetic substance and a non-magnetic...
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6210544 |
Magnetic film forming method
Disclosed is a magnetic film forming method of forming a magnetic film on a substrate by preparing a material A formed of oxide of an element T of at least one kind of Fe, Co, and Ni and a material...
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6183606 |
Manufacture method of high coercivity FePt-Si3N4 granular composite thin films
A method of producing high coercivity FePt--Si3 N4 granular composite thin films for magnetic recording media is invented. The method includes magnetron co-sputtering of FePt and Si3 N4 targets at...
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6036825 |
Magnetic film forming method
In a magnetic film forming method, a plurality of chips formed of Fe3 O4 and a plurality of chips formed of HfO2 are disposed on a target formed of Fe. The composition ratio of a Fe--Hf--O film can...
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RE36517 |
Thin film magnet, cylindrical ferromagnetic thin film and production method thereof
A thin film magnet and a cylindrical ferromagnetic thin film having a high maximum energy product (greater than 120 kJ/m3) and thus suitable for use in miniature high performance devices are...
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5998048 |
Article comprising anisotropic Co-Fe-Cr-N soft magnetic thin films
The invention is embodied in an anisotropic, soft magnetic thin film article comprising a cobalt-iron-chromium-nitrogen (Co--Fe--Cr--N) alloy. The thin film is formed such that the alloy has a...
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5989674 |
Thin film disk with acicular magnetic grains
A thin film disk and a disk drive using the thin film disk are described. The disk has a thin film magnetic layer composed of small acicular grains having an average aspect ratio greater than one...
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5989691 |
Magnetic element
A magnetic element comprising a thin film having a uniaxial magnetic anisotropy partly disposed on a polymer substrate. The magnetic element exhibits a discontinuous magnetic reversal under an...
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5976715 |
Articles comprising magnetically soft thin films
The invention is embodied in a soft magnetic thin film article comprising an iron--chromium-nitrogen (Fe--Cr--N) based alloy and methods for making such article. The soft magnetic thin film article...
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5750273 |
Soft magnetic thin film and thin film magnetic element using the same
A thin film magnetic element is disclosed which uses a soft magnetic thin film having a composition represented by the general formula: T100-x-y Mx (AOv)y(wherein T stands for at least one element...
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5679473 |
Magnetic recording medium and method for its production
A magnetic recording medium having a magnetic thin film, wherein crystal grains constituting the magnetic thin film are separated by a crystal boundary region containing a non-ferromagnetic and...
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5658680 |
Magnetic recording medium and its fabrication method
The invention is intended to provide a magnetic recording medium suitable for longitudinal recording, which has low medium noise and high coercivity. A magnetic recording medium includes a...
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5652054 |
Magnetic recording media having a magnetic thin film made of magnetic metals grains and nonmagnetic matrix
This invention provides a magnetic recording medium having a magnetic thin film made of magnetic metal grains and a nonmagnetic matrix, wherein the hardness of the nonmagnetic matrix is larger than...
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5612145 |
Perpendicular magnetic medium and manufacturing method for the medium
The present invention discloses a perpendicular magnetic recording medium which includes a non-magnetic base and a magnetic thin film made of a Nd--Fe--B alloy on the non-magnetic base. The...
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5538802 |
Magnetic recording medium and process for producing the same
A magnetic recording medium which is uncostly, can dispense with environmental pollution control measures unlike the case of Co or Cr, is highly durable, permits high density recording and...
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5480694 |
Magnetic recording medium
A magnetic recording medium comprising alumite made by anodic oxidation of aluminum or an aluminum alloy and comprising fine pores in which a ferromagnetic material is filled, wherein an in-plane...
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5434014 |
Magnetic recording medium and method of manufacturing same
A thin film type longitudinal magnetic recording medium is manufactured by forming a magnetic layer of Co1-x-y Ptx Cry, (0.15
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5304258 |
Magnetic alloy consisting of a specified FeTaN Ag or FeTaNCu composition
A magnetic alloy film suitable for high density recording has a composition of (Fex My Nz)a Lb, where L is Cu and/or Ag. The provision of Cu and/or Ag in a range from 0.5 to 5 atomic % enhances...
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5173370 |
Magnetic recording medium having a magnetic thin film with both paramagnetic phase and ferromagnetic phase iron nitride with paramagnetic phase zeta Fe2 N as its largest component
A perpendicular magnetic recording medium comprises a non-magnetic substrate having one main surface and a magnetic film of Fe-N or Fe-Co-N formed on the substrate's main surface. The magnetic film...
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5154983 |
Magnetic alloy
A magnetic alloy represented by the compositional formula: Fex Ny Mzwherein M represents at least one of the elements B, C, Al, Ga, or Ge, or M is M'z Lv wherein M' has the same definition as the...
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5068158 |
Magnetic recording medium and process for preparing the same
A magnetic recording medium comprises a non-magnetic substrate and a perpendicular magnetic film of Co-based alloy having a large perpendicular magnetic anisotropy having 0.001 to 5% by atom of...
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5006395 |
Iron carbide thin film magnetic recording medium
A magnetic recording medium essentially composed of a substrate and a ferromagnetic thin film deposited on the surface of the substrate is provided herein. This ferromagnetic film is such as to...
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4994320 |
Thin magnetic film having long term stabilized uniaxial anisotropy
An amorphous thin magnetic film having stabilized uniaxial anisotropy of thickness 200-1000 angstroms is fabricated from an alloy of composition CoX where X is one of the elements Zr, Nb, Mo, Ta,...
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4988535 |
Magnetic recording medium
A magnetic recording medium comprises a non-magnetic substrate and a magnetic film which is formed on the non-magnetic substrate and the major component of which is iron nitride-oxide.
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4956229 |
Magnetic recording medium
A durable, rust- and scratch-resistant magnetic recording medium coated thereon a thin ferromagnetic film comprising an iron oxide nitride, wherein said film is an aggregation of pillar particles...
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