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7368187 |
Thermally 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...
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7323259 |
Multilayer perpendicular media with high-boron or high-carbon additives to CoCr films
Carbon or boron is added into the CoCr layers of a multiplayer perpendicular magnetic media structure to reduce media noise. The perpendicular magnetic media structure has sharp interfaces between...
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7314675 |
Magnetic 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...
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7289298 |
Perpendicular magnetic recording medium, method for manufacturing the same, and magnetic recording/reproducing apparatus
Disclosed is a magnetic recording medium which includes a substrate, an underlayer, and a perpendicular magnetic recording layer, and in which this perpendicular magnetic recording layer contains...
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7270898 |
Polycrystalline structure of ordered alloy and method of making the same
Magnetic crystalline grains are spaced from each other on a base layer a polycrystalline structure. The magnetic crystalline grains are made of an ordered alloy. The ordered alloy serves to ensure...
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7270897 |
Magnetic recording medium, method of manufacturing the same medium and magnetic disc drive
A higher value of an anistropic magnetic feild can be acquired by using a magnetic material where Cr is not added as a material of a magnetic layer on which magnetic data is recorded. A magnetic...
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7217468 |
Magnetic recording medium and method of fabricating the same
A method of fabricating a low-noise, high-output and large-capacity magnetic recording medium compatible with the AIT3 format in which a metal magnetic film is formed by the vacuum evaporation...
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7195827 |
Perpendicular 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,...
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7186471 |
Chemically ordered, cobalt-three platinum alloys for magnetic recording
A magnetic recording layer having polycrystalline chemical ordered (COX) 3 Pt or (COX) 3 PtY alloys. The additive X comprises Sc, Ti, V, Cr, Mn, Ni, Cu, Zn, Ga, Ge, Nb, Mo, Ru, Rh, Pd, Ag, Cd, In,...
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7157162 |
Magnetic recording medium and magnetic recording and reproducing apparatus
A magnetic recording medium having a substrate, an under-layer formed on the substrate, a magnetic layer formed on the substrate and a protective layer formed on the magnetic layer. The magnetic...
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7153597 |
Magnetic recording media having chemically modified patterned substrate to assemble self organized magnetic arrays
A data storage medium is provided according to the present invention for magnetic recording. The data storage medium includes a substrate having a locking pattern etched therein defining patterned...
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7087325 |
Magnetic recording medium and production process thereof
The present invention relates to a magnetic recording medium, which has excellent magnetic characteristics. The present invention also relates to a method for producing a magnetic recording medium...
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7070869 |
Magnetic component
The invention relates to an element, comprising a substrate with a surface roughness of less than 5 nm, with saturated bonds on the surface and an MPt 3 film applied to at least one side of the...
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7041394 |
Magnetic recording media having self organized magnetic arrays
A magnetic recording disc is provided according to the present invention for magnetic recording. The magnetic recording disc includes a disc substrate having a locking pattern etched therein....
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6777078 |
Magnetic recording medium with L10 crystal grains including three or more elements
A magnetic recording medium has a substrate, an underlayer formed on the substrate, a magnetic layer formed on the underlayer and including crystal grains having an L1 0 structure mainly including...
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6740383 |
Magnetic recording medium possessing a ratio of Hc(perpendicular) to Hc(horizontal) that is not more than 0.22 and magnetic recording disk device
A magnetic recording medium and a magnetic disk device using the same. The magnetic recording medium comprising a nonmagnetic substrate having applied thereon, through two or more chromium-based...
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6720075 |
Magnetic recording medium and magnetic recording medium driver for the medium with N-type ferrimagnetic recording layer
A magnetic recording medium stable against heat of which high density recording can be attained is provided by employing a magnetic material such that coercive magnetic force in a recording...
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6677051 |
Magnetic recording medium with dual magnetic layers having specific composition requirements and a magnetic storage apparatus
A magnetic recording medium is constructed to include a substrate, and a magnetic layer disposed above the substrate, wherein the magnetic layer has an initial layer on a side closer to the...
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6649286 |
FeCoNiN-based soft magnetic thin film composition
Disclosed is a FeCoNiN-based soft magnetic thin film composition having the formula Fe x Co y Ni z N v , wherein x, y, z and v are expressed in at % and satisfy 41≦x≦55, 18≦y≦27,...
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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...
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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: Co x Cr y Ge z where x, y and z, which...
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6548194 |
Perpendicular magnetic recording medium and a magnetic reproducing apparatus
Disclosed is a magnetic recording medium having a laminate structure comprising at least a substrate, a Co alloy bias layer, a soft magnetic layer, and a magnetic recording layer. The direction of...
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6511761 |
Magnetic recording media and magnetic storage apparatus
In a magnetic storage apparatus including a recording medium having a magnetic layer, a seed layer and an underlayer formed on a substrate, a driver for driving the recording medium, a magnetic...
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6383597 |
Magnetic recording media with magnetic bit regions patterned by ion irradiation
A patterned magnetic recording disk has a magnetic recording layer patterned into discrete magnetic and nonmagnetic regions having substantially the same chemical composition. The nonmagnetic...
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6171676 |
Magnetic recording medium containing fine magnetic crystal grains and its manufacture
A magnetic recording medium has a substrate of a disk shape having a non-magnetic surface and a through hole formed at the central area of the substrate, and a plurality of dispersed island regions...
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6063512 |
Soft magnetic thin film having Co, Ni and Fe as main ingredients, method of manufacturing the same and magnetic head and magnetic storage unit using the soft magnetic thin film
A soft magnetic thin film for magnetic head has high saturation magnetization and at the same time high resistivity. There are provided a method of manufacturing the soft magnetic thin film and a...
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6060181 |
Low loss magnetic alloy
A more resistive, low loss magnetic alloy containing at least 80% cobalt, at least 10 wt % iron, about 2.5 wt % nickel, and about 0.3-2 wt % impurities including boron and manganese. The alloy is...
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5989728 |
Thin film magnetic recording medium having high coercivity
An alloy of tetragonal polycrystalline structure acts as a thin film magnetic medium. The medium can be for recording or sensing magnetic transitions representative of data and is of a thickness...
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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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5925404 |
Manufacturing method of magnetic material for metallic thin film magnetic recording media and metallic thin film magnetic recording medium
The quantity of impurities in a magnetic material is decreased to produce a magnetic material with good quality, and a decrease in the cost of the magnetic material is realized by desulfurization....
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5914168 |
Magnetic recording medium and magnetic disc device
A magnetic recording medium able to cope with low flying height of the magnetic head in a CSS system and having fine surface roughness, wherein (1) a metal layer having columnar protrusions formed...
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5908711 |
Magnetic recording medium
In a magnetic recording medium having a magnetic thin film formed on a nonmagnetic base film by vacuum evaporation, a noise can be reduced and hence a satisfactory error rate for the digital...
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5908514 |
Magnetic alloy for improved corrosion resistance and magnetic performance
A new magnetic alloy exhibits high Hc and Ms while exhibiting excellent corrosion resistance, thereby providing ideal physical properties for high density recording applications. Other parameters...
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5863631 |
Perpendicular magnetic recording medium and magnetic recording device using the same
A perpendicular magnetic recording medium wherein a perpendicular magnetic film is formed on a substrate or a nonmagnetic film, and the perpendicular magnetic film contains Co and Cr, the content...
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5851660 |
Method of fabricating a thin-film magnetic recording medium and thin-film magnetic recording medium
The objective of the present invention is to provide a method of fabricating a thin film magnetic recording medium where excellent read/write characteristics and high productivity are obtained and...
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5830588 |
High density magnetic recording medium
The invention relates to a method of producing a magnetic material for use in an ultrahigh density magnetic recording medium and to the medium itself. The method general includes the steps of...
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5789088 |
Magnetic recording medium having a metal underlayer and a CoCr alloy magnetic thin film
Disclosed is magnetic recording media having a high coercivity sufficient to cope with the recent high density recording, low noise property and excellent squareness, and a target for forming a...
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5660929 |
Perpendicular magnetic recording medium and method of producing same
A perpendicular magnetic recording medium is fabricated based on R 21 -60 (Fe 1 -y Co y ) z M 0 -10 wherein z is balance and at least 70 at % of R is Nd and/or Pr, the balance of R being one or...
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5514477 |
Corrosion-resistant laminate which consists of a metal of a single mass number deposited on a substrate
A highly corrosive-resistant metal having a high purity and a specific plane index is manufactured by ion beam deposition (IBD). A thin film having less defects and impurities is obtained. A...
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5512349 |
Method and apparatus for magnetic recording digital video signals and magnetic recording medium therefor
A magnetic tape for the recording of digital video signals is constituted by a nonmagnetic base having thereon a magnetic layer of at least one thin magnetic metal film which has an energy product...
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5466539 |
High permeability iron-based alloy
A high permeability Fe-based alloy having a composition of (Fe a M 100 -a) 100 -b X b , wherein M represents at least one element selected from a group consisting of Nb, Zr, Ta, Hf, Ti, V, and Si,...
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5242762 |
Magnetic recording medium having an underlayer and a thin film magnetic layer which consists of a specified cobalt-platinum-palladium alloy
In a magnetic recording medium including a substrate and an alloy thin film magnetic layer formed on the substrate, the magnetic layer is composed of Co 100 -y (Pt 100 -x Pd x ) y where x is set...
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5187022 |
Magnetic recording medium for encoders
To construct a magnetic recording medium to be used for an encoder adapted for detection of an angular or linear displacement of a mobile object such as a robot arm, a substrate is at least partly...
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5158833 |
Magnetic recording medium
A magnetic recording medium having high recording density and being capable of obtaining excellent over-write characteristics by having a magnetic layer including Co and Ni as its principal...
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5112669 |
Magnetic recording medium
A magnetic recording medium comprises a non-magnetic substrate and a thin magnetic metal layer which is overlaid on the non-magnetic substrate. The volume of pores in the thin magnetic metal layer...
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5082750 |
Magnetic recording medium of thin metal film type
A magnetic recording medium having excellent noise characteristics and comprising a metal magnetic film formed on a nonmagnetic substrate and made of (1) a Co-Cr-Nb alloy, or (2) a Co-Cr-Ni-Nb...
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5068144 |
Perpendicular magnetic recording medium and method for producing the same
A perpendicular magnetic recording medium comprising a non-magnetic substrate and a magnetic layer which is formed on at least one surface of the substrate and comprises acicular particles of...
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5024903 |
Magnetic recording medium having a magnetic layer of a quaternary alloy
A magnetic recording medium which comprises a non-magnetic substrate, a Cr undercoat layer formed on the substrate, and a quaternary alloy layer formed on the undercoat layer. The alloy layer...
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5023148 |
Tine film cobalt-containing recording medium
The present invention provides novel magnetic recording media wherein the magnetic recording material is an alloy consisting essentially of a major amount of cobalt and either or both of a minor...
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5000995 |
Magnetic recording medium and method
A method for preparing a magnetic recording medium comprises forming a magnetic recording layer on a substrate by the physical vapor deposition method, wherein the incident angle on initiation of...
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