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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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4929514 |
Thin film media for high density longitudinal magnetic recording
A magnetic thin film materials system (10, 10') is provided, comprising a thin magnetic film (16) formed on a non-magnetic underlayer (14) formed on a substrate (12). In particular, the magnetic...
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4902583 |
Thick deposited cobalt platinum magnetic film and method of fabrication thereof
A 3,000-10,000 angstrom thick cobalt-platinum (CoPt) magnetic film is deposited onto a chromium (Cr) or tungsten (W) overlayer on a substrate, or is deposited directly onto the substrate. The...
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4840845 |
Magnetic recording medium having perpendicular magnetic anisotropy
A magnetic recording medium having good perpendicular magnetic anisotropy is provided in which an alloy mainly consisting of Fe and Ti; or Fe, Ti and Cr; is fabricated on a substrate to have a...
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4835069 |
Magnetic recording medium
A magnetic recording medium having a magnetic layer formed by a thin film deposition method, said magnetic layer comprising Fe as the principal component together with Co, Ni, and Cr, further...
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4833044 |
Film type magnetic recording medium
A film type magnetic recording medium comprising as a magnetic recording layer an iron-cobalt-nickel-chromium magnetic alloy containing 10-51 wt. % cobalt, 1-30 wt. % nickel, 1-10 wt. % of chromium...
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4789598 |
Thin film medium for horizontal magnetic recording having an improved cobalt-based alloy magnetic layer
An improved thin film metal alloy media for horizontal magnetic recording has a magnetic layer of an alloy comprising cobalt, platinum and chromium, where the chromium concentration in the alloy is...
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4743348 |
Magnetic medium for horizontal magnetization recording and method for making same
A magnetic medium for horizontal magnetization recording which comprises a non-magnetic substrate and a magnetic recording film formed on at least one side of the substrate, is described. The...
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4688130 |
Perpendicular magnetic recording medium and production process thereof
A perpendicular magnetic recording medium is formed of a substrate having 5×10 5 -5×10 9 fine projections per mm 2 on the surface thereof, said projections having heights in the range of...
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4663193 |
Process for manufacturing magnetic recording medium
A manufacturing process of Co-Ni magnetic recording media by sputtering Co-Ni thin film layer on a substrate in Argon atomsphere including nitrogen and heating the thin film to evaporate nitrogen...
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4631202 |
Thin film magnetic recording film
A thin film magnetic recording disc is provided wherein the magnetic layer is an alloy of cobalt and platinum disposed on a chromium layer. A barrier layer of chromium is formed on the...
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4588647 |
Perpendicular magnetization film and the preparation thereof
A perpendicular magnetization film of iron-chromium alloy having an easy magnetization axis perpendicular to a plane of substrate, and the preparation thereof. The perpendicular magnetization film...
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4587166 |
Plated magnetic recording material and process for making same
Plated magnetic recording material, such as magnetic tape, composed of a thin layer of ferromagnetic metal and a base film layer are made by plating a passivated smooth continuous surface such as...
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4563396 |
Magnetic recording medium
A magnetic recording medium having a Mn-Al recording layer containing at least one of Fe, Co, and Ni and having an easy magnetization axis in the perpendicular direction to the layer. The magnetic...
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4542062 |
Magnetic recording medium
A magnetic recording medium comprises a magnetic alloy layer on a substrate wherein said magnetic alloy layer is made of 70-90 wt. % of Co and 30-10 wt. % of at least one of Si, Sb, Li, V, Ta, Ge...
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4536443 |
Magnetic recording medium
A magnetic recording medium comprises a non-magnetic substrate and at least one layer of obliquely deposited magnetic crystals which contains, as a main constituent, Co or a Co--Ni based alloy...
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4507364 |
Perpendicular magnetic recording medium
Magnetic recording medium conventionally utilizes the in-plane magnetization mode, but, recently, the perpendicular magnetization mode utilizing the perpendicular anisotropy of an hcp cobalt alloy...
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4495241 |
Magnetic tape
An extremely thin highly magnetic layer is formed on one surface side only of an age-hardening type magnet alloy film by local age-hardening after solution treatment for the purpose of high density...
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4452864 |
Magnetic recording medium
A magnetic recording medium comprises a substrate and a magnetic recording layer formed on the substrate and having an easy magnetization axis in the perpendicular direction to the surface of the...
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4429016 |
Magnetic recording medium with vacuum deposited magnetic layer
The present invention relates to a magnetic recording medium of the vertical record type belonging to the Co-Cr series in which the residual magnetization is normal to said magnetic medium,...
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4414271 |
Magnetic recording medium and method of preparation thereof
A magnetic recording medium comprising a substrate, a thin magnetic metal film having spaced-apart columnar grains deposited on the substrate, and a crosslinked organic polymer formed from a...
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4414287 |
Magnetic recording medium and its manufacture
A magnetic recording medium comprising a non-magnetic base which is dimensionally stable at up to 300° C., and an 0.03-0.4 μm thick magnetically hard recording layer of an Sm-Co alloy,...
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4407894 |
Method for producing a perpendicular magnetic recording medium
Magnetic recording medium conventionally utilizes the in-plane magnetization mode, but, recently, the perpendicular magnetization mode utilizing the perpendicular anistropy of an hcp cobalt alloy...
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4405677 |
Post treatment of perpendicular magnetic recording media
A method of post treatment to a continuous thin film magnetic medium designed for perpendicular recording comprising a substrate upon which is deposited a thin magnetic layer comprising acicular...
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4388367 |
Perpendicular magnetic recording medium and fabrication
A method for producing a continuous thin film magnetic medium by electrochemical plating deposition, useful for perpendicular recording. The plated medium comprises a substrate upon which is...
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4387136 |
Magnetic recording medium and apparatus for preparing the same
A thin metallic layer type magnetic recording medium having thin metallic layers in a structure comprises a layer in which a tilt angle of a metallic particle direction to the normal line to said...
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4367257 |
Thin magnetic recording medium
A magnetic recording medium having a thin magnetic amorphous rare earth metal-transition metal alloy film is disclosed, the amorphous alloy film having an axis of easy magnetization in a direction...
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4260466 |
Method of producing magnetic recording medium
A method of producing a magnetic recording layer on a support comprising simultaneously depositing a ferromagnetic material and a polymer on a support using a vapor deposition technique such as...
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4245008 |
Corrosion resistant magnetic recording media
A thin film magnetic recording medium for deposition on a record carrier includes a ferromagnetic alloy containing iron, cobalt and chromium. The ferromagnetic alloy consists of from 0-55% cobalt,...
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4042341 |
Magnetic films of transition metal-rare earth alloys
A method of preparing a magnetic member composed of a non-magnetic substrate carrying a magnetic film of a transition metal-rare earth alloy comprising decomposing a rare earth metal compound below...
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3540864 |
MAGNETIC COMPOSITION
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