Abstract: A cobalt-platinum (CoPt) magnetic film is deposited onto a chromium (Cr) or tungsten (W) underlayer on a substrate, or is deposited directly onto the substrate and has an appreciable component of its C-axis which is parallel go the [00.2] direction, lying in the plane of the film whereby the resultant magnetic films exhibit coercivities from 2100-3000 oersteds.

Abstract: A magnetic recording medium comprising a magnetic recording layer and at least one protective layer formed on the recording layer, wherein the outermost protective layer on the side exposed to air is made of an oxide film.

Abstract: A liquid crystal device includes: a liquid crystal disposed between a pair of substrates; at least one of which has thereon an alignment film comprising a polyimide or polyamide imide formed by reaction between a diamine component of formula (1) shown below and at least two acid components selected from tetracarboxylic acid components having a structure of formula (2) shown below at least including a naphthalenetetracarboxylic acid component, and dicarboxylic acid components having a structure of formula (3) shown below; ##STR1## wherein R.sub.1 and R.sub.2 independently denote an alkyl group or a fluoroalkyl group having 1-10 carbon atoms; ##STR2## wherein A and B respectively denote a tetravalent or divalent organic residue comprising an aromatic ring, aromatic polycyclic ring or condensed polycyclic ring.

Abstract: There is provided a magnetoresistance effect element comprising a substrate and at least two magnetic thin layers which are laminated with interposing a non-magnetic thin layer therebetween on said substrate, wherein adjacent magnetic thin layers through the non-magnetic thin layer have different coercive forces, characterized in that a metal thin film is provided in an interface between at least one of the magnetic layers and the non-magnetic layer which is adjacent thereto, and the metal thin film is made of a substance which is different from that of the adjacent non-magnetic layer.

Abstract: A magnetic recording medium comprises a nonmagnetic substrate and at least one ferromagnetic metal layer applied thereon and a protective layer formed on this metal layer and consisting of a compound which consists of an unfluorinated or partially fluorinated alkyl radical and a disulfide, hydroxyl or keto group.

Abstract: A magnetic recording medium is disclosed. The magnetic recording medium is produced by coating the following magnetic paints on a support in the order from the support,a lower layer magnetic paint having a creep strain of 20% to 1000% determined in the conditions with non-volatile content of the paint of 30 weight percent, a temperature 20.degree. C., and a loading weight of 1 Pascal, andan upper layer magnetic paint having a creep strain of 10% to 500% determined in the same conditions.

Abstract: A single recording side magneto-optic disk has improved dampening characteristics for rotation at high speeds such as 3,000 rpm or greater. A dampening layer is secured to the recording side. The dampening layer includes a film of at least approximately 102 micrometers in thickness attached to the disk by an adhesive layer of at least 25.4 micrometers in thickness.

Abstract: A magnetic recording medium comprises a non-magnetic support and provided thereon, in order, a non-magnetic layer containing a non-magnetic powder, and a magnetic layer containing a ferromagnetic metal powder, each layer containing a binder, the crystallite size of the magnetic powder determined according to X-ray measurement being 30 to 120 .ANG. and the dry thickness of the magnetic layer being 0.01 to less than 0.5 .mu.m.

Abstract: A magnetic thin-film medium formed on a non-metallic substrate and having reduced noise characteristics, by virtue of a 5-50 .ANG., sputtered Cr-containing sublayer interposed between the substrate and a chromium underlayer. Also disclosed is a method of preparing the low-noise medium.

Abstract: A flexible magnetic disk is disclosed, which comprises a non-magnetic support having thereon a non-magnetic layer comprising mainly a non-magnetic powder and a binder resin, and a magnetic layer comprising mainly a ferromagnetic layer and a binder resin, in this order, wherein at least a part of the non-magnetic powder in the non-magnetic layer is an electrically conductive powder, and therein the product Et.sup.3 of Young's modulus (E) of the flexible magnetic disk and the cube of the thickness (t) thereof is 50 to 210 g.multidot.mm. The magnetic layer preferably has a thickness of not more than 0.5 .mu.m and the ferromagnetic powder preferably is ferromagnetic metallic powder or ferromagnetic hexagonal ferrite powder.

Abstract: A magnetic recording medium produced by providing a lower non-magnetic layer comprising a non-magnetic powder dispersed in a binder on a non-magnetic support followed by providing, while the lower non-magnetic layer is still wet, an upper magnetic layer comprising a ferromagnetic powder dispersed in a binder on the lower non-magnetic layer, wherein a mean thickness of the upper magnetic layer is 1.0 .mu.m or less and the non-magnetic powder in the lower non-magnetic layer comprises (A) a granular inorganic powder having a mean particle size of from 0.01 to 0.08 .mu.m, (B) a carbon black powder having a mean particle size of from 0.01 to 0.04 .mu.m and (C) a powder component having a larger mean particle size than the mean particle size of each of powders (A) and (B). The magnetic recording medium has good electromagnetic characteristics and has excellent running durability with little edge damage after repeated running.

Abstract: An electromagnetic wave absorber comprising at least one of a unit film as a multilayered film comprising a resin layer (A) optionally containing a pigment and a layer (B) applied onto the resin layer (A), selected from a group consisting of a metal layer, an alloy layer and a partly oxidized layer of the metal layer or the alloy layer, and having a film thickness of 1 nm to 50 nm.

Abstract: A magnetic recording disk has a layered structure comprising a metal substrate, a layer of NiP atop the metal substrate, the NiP layer having a surface roughness of less than 2.0 nanometers RMS, a metal layer over the polished NiP layer, the metal layer having a desired textured outer surface as a result of the sputter deposition, the textured outer surface being characterized by a cobblestone-like metallic grain structure with between 10 and 100 grains per square micron, an RMS surface roughness of between 1.0 and 8.0 nanometers, and with peak heights as measured from the mean plane of the surface over a 10 micron square area of between 2.0 and 20.0 nanometers, a magnetic layer atop the metal layer.

Abstract: A magnetic recording medium and a magnetic tape cassette are disclosed, comprising a non-magnetic support having formed on one surface only thereof at least two layers including a lower layer and an upper magnetic layer formed thereon, wherein the surface electric resistance (Rs) of the surface of the magnetic layer of said magnetic recording medium is 10.sup.9 .OMEGA./sq or less, the non-magnetic support contains at least three different kinds of particles which vary from each other in at least one property of mean particle diameter and Mohs' hardness, and the opposite surface of the magnetic recording medium comprises the rear surface of the nonmagnetic support having at least 1,000 projections having a height of from 200 nm to 400 nm per 0.1 mm.sup.2, but with the provisos that not more than 1,000 projections are present having a height of from 400 nm to 700 nm per 0.1 mm.sup.2 and not more than 50 projections are present having a height of 700 nm or more per 0.1 mm.sup.2.

Abstract: A thin film type longitudinal magnetic recording medium is manufactured by forming a magnetic layer of Co.sub.1-x-y Pt.sub.x Cr.sub.y, (0.15<x.ltoreq.0.35; 0<y.ltoreq.0.15), on a substrate. The magnetic layer is formed by sputtering under an inert gas atmosphere containing 0.1 to 15% by volume of at least one of N.sub.2 and O.sub.2.

Abstract: A magnetic thin-film media with high coercivity and low noise characteristics is disclosed. The medium has a gradient-composition thin-film magnetic layer in which a lowermost stratum is composed of a first alloy, preferably, having relatively low noise and low magnetic remanence characteristics, and an uppermost stratum composed of a second alloy having relatively high noise and high magnetic remanence characteristics. The medium is characterized by a coercivity which is substantially greater, and a media noise which is substantially less than that of a similar medium whose magnetic thin-film layer is composed of either the first or second alloy alone. Also disclosed is a method of producing such a medium.

Abstract: A surface of a magneto-optical recording medium of the present invention is textured with fine and physical protrusions and recessions. The shapes of physical protrusions and recessions vary at each radial locations on the medium such that, for example, rough protrusions and recessions are formed in inner parts of the recording medium and fine protrusions and recessions are formed in outer parts thereof. Therefore, floating force given to a floating head from the medium being rotated based on the constant angular velocity method through an air layer in the outer parts equals floating force in the inner parts. Consequently, since the floating height of the floating head becomes constant irrespective of radial locations on the medium, information can be recorded under constant recording conditions, permitting the accuracy of the recording to improve.

Abstract: A magnetic recording medium includes a nonmagnetic substrate and a magnetic layer which is formed on a surface of the substrate and which has an axis of easy magnetization inclined from a direction to normal plane of the layer. An angular dependency of coercive force, of the medium which is measured by changing an application angle of a magnetic field in a range relative to -90.degree. to +90.degree. from the plane of the layer with a plane normal to the layer and including the axis of easy magnetization, has two local maximum values and two local minimum values. A ratio of the local maximum value closer to a plane direction to the minimum value closer of the layer to the local plane direction of the layer is from 1.6 to 2.4, and the local maximum value closer to the plane direction of the layer is larger than the local maximum value closer to the line normal to of the plane of the layer. The medium has a high S/N ratio.

Abstract: A magnetic recording medium providing a high reproducing output and a high C/N over a wide recording frequency region is disclosed. The magnetic recording medium comprises a non-magnetic substrate and a lower magnetic layer, a non-magnetic intermediate layer and an upper magnetic layer on the substrate in this order so that the ratio of the non-magnetic intermediate layer thickness (t) to the upper magnetic layer thickness (d), i.e., (t/d), is within the range of 0.1/1 to 0.3/1.