Abstract: Disclosed is a near-infrared absorbing composition, including: a near-infrared absorbing agent; and a solvent, wherein the near-infrared absorbing agent includes at least one of the following Component (A) and Component (B): Component (A): a component composed of a compound having a structure of the following general formula (I) and a metal ion; Component (B): a component composed of a metal complex that is obtainable by a reaction of the compound having the structure of the following general formula (I) and a metal compound.

Abstract: The present invention provides a method for easily obtaining a perpendicular magnetic recording medium having the desired magnetic properties by sputtering, and a magnetic recording medium obtained by this method. The perpendicular magnetic recording medium of the present invention is a perpendicular magnetic recording medium comprising at least a soft magnetic underlayer, an underlayer, a magnetic recording layer, a protective layer, and a liquid lubricant layer sequentially laminated on a nonmagnetic substrate, wherein the magnetic recording layer is a rare earth-transition metal alloy amorphous film formed by sputtering, and the formation of the magnetic recording layer by sputtering is performed using a film-forming gas incorporating 2% or more, but 60% or less of an H2 gas. The present invention also discloses a method for producing the perpendicular magnetic recording medium.

Abstract: The present invention provides a method for easily obtaining a perpendicular magnetic recording medium having the desired magnetic properties by sputtering, and a magnetic recording medium obtained by this method. The perpendicular magnetic recording medium of the present invention is a perpendicular magnetic recording medium comprising at least a soft magnetic underlayer, an underlayer, a magnetic recording layer, a protective layer, and a liquid lubricant layer sequentially laminated on a nonmagnetic substrate, wherein the magnetic recording layer is a rare earth-transition metal alloy amorphous film formed by sputtering, and the formation of the magnetic recording layer by sputtering is performed using a film-forming gas incorporating 2% or more, but 60% or less of an H2 gas. The present invention also discloses a method for producing the perpendicular magnetic recording medium.

Abstract: A rewritable magneto-optical memory device for multi-wavelength recording and reproduction having a high packing density. The device is form by a plurality of magnetic film layers, each of which has a unique characteristic wavelength at which optical absorption and magneto-optical effect occur simultaneously, in which a selective writing on one of the plurality of magnetic film layers is realized by using a writing light beam incident on the plurality of magnetic film layers which has a wavelength equal to the characteristic wavelength of that one of the plurality of magnetic film layers, and a selective reading from that one of the plurality of magnetic film layers is realized by measuring Faraday rotation angle of a reading light beam incident on the plurality of magnetic film layers which has a wavelength equal to the characteristic wavelength of that one of the plurality of magnetic film layers.

Abstract: A process for preparing a single oxide crystal comprising the steps of mixing to fuse raw materials for crystal growth and a flux, cooling the fused mixture slowly to grow and precipitate a single crystal, and dipping up said single crystal from the molten flux while said flux is molten. A substitution amount of the substituted element in the grown crystal can be controlled. The crystal thus obtained is of high quality with little cracks.