Abstract: An ion implanting apparatus is provided, which can accurately measure a quantity of atoms that are implanted. The ion implanting apparatus according to the present invention has an object to be measured, and the object to be measured is arranged in an irradiating range in which ions are irradiated. When atoms are implanted into an object to be processed by irradiating ions of a processing gas and neutralized particles thereof, the object to be measured is heated through the irradiation with the processing gas ions and the neutralized particles. A control unit determines a quantity of the atoms that are implanted into the object to be processed from the temperature of the object to be measured.

Abstract: The method for manufacturing a magnetic recording medium in a shape of a disk includes forming convex sections repeating on the upper surface of an intermediate layer in the radial direction of the disk, and each having an upper surface that repulses magnetic particles; and filling the magnetic particles into concave sections sandwiched by the convex sections in a self-assembling way to form a magnetic recording layer with the magnetic particles.

Abstract: An ion implanting apparatus is provided, which can accurately measure a quantity of atoms that are implanted. The ion implanting apparatus according to the present invention has an object to be measured, and the object to be measured is arranged in an irradiating range in which ions are irradiated. When atoms are implanted into an object to be processed by irradiating ions of a processing gas and neutralized particles thereof, the object to be measured is heated through the irradiation with the processing gas ions and the neutralized particles. A control unit determines a quantity of the atoms that are implanted into the object to be processed from the temperature of the object to be measured.

Abstract: The following abstract replace prior abstract in the application. It is an object to provide a simple and practical method capable of producing a magnetic storage medium of a type such as a bit-patterned type, a magnetic storage medium of the above-mentioned type and an information storage device which may be produced by such a simple and practical method, and in a method of producing a magnetic disk, there are performed: a film-forming process of forming, on a glass substrate 61, a magnetic film 62 so that the Curie temperature becomes 600 K or lower; and an ion injection process (C) of injecting ions locally into an area other than a predetermined protected area on the magnetic film 62.

Abstract: A magnetic recording medium having a high magnetic pattern contrast is manufactured. By changing an acceleration voltage that accelerates ions in a process gas, depths (peak depths D0 and D1) from a magnetic layer 44, at which an injection amount of a target element is the maximum, can be made with set depths even if a film thickness of an ion permeation portion 48, which is a thin film portion of a resist 49, decreases. Since the set depths are achieved for the peak depths D0 and D1, a portion to be processed 43 of the magnetic film 44 is made non-magnetized from a top surface to a bottom surface, and a magnetic portion is separated; thus, the magnetic recording medium with a high magnetic pattern contrast can be obtained.

Abstract: It is an object to produce a magnetic storage medium of a high recording density by a production method that does not impair mass productivity, and a magnetic storage medium 10 is produced by a production method including: a magnetic-film forming step of forming a magnetic film 61 on a substrate 62; and a dots separating step of reducing saturation magnetization by locally injecting mixed ions of N2+ ion and N+ ion into an area, of the substrate 62, other than plural areas which respectively become magnetic dots 62c where information is to be magnetically recorded, thereby forming, between the magnetic dots 62c, a between-dot separator 62d having saturation magnetization smaller than saturation magnetization of the magnetic dots 62c.

Abstract: It is an object to provide a simple method capable of producing a magnetic storage medium, a magnetic storage medium and an information storage device which may be produced by a simple production method with a high recording density, and a magnetic disk is produced by a production method having: a film-forming process of forming, on a substrate 61, a magnetic film made of a Co—Cr—Pt alloy and having a thickness of less than 10 nm; and an ion injection process of forming, by reducing saturation magnetization by locally injecting ions into a point other than plural points that become magnetic dots on each of which information is magnetically recorded, a between-dot separator having saturation magnetization smaller than saturation magnetization of the magnetic dots, between the magnetic dots.

Abstract: A magnetic recording medium is manufactured without the disappearance of the surface of a substrate that comprises a magnetic recording layer by ion milling and without being influenced by the atmosphere. A magnetic recording medium manufacturing device manufactures a magnetic recording medium by implanting an ion beam into a substrate that comprises a magnetic recording layer and removing by ashing the surface of the substrate that comprises the magnetic recording layer after the ion beam is implanted. The magnetic recording medium manufacturing device comprising an ion implantation chamber for implanting the ion beam into the substrate that comprises the magnetic recording layer coated with a resist film or a metal mask, and an ashing chamber for removing, by ashing, with plasma, the resist film or the metal mask of the substrate that comprises the magnetic recording layer coated with the resist film or the metal mask. The ion implantation chamber and the ashing chamber are coupled in a vacuum state.

Abstract: A perpendicular magnetic recording medium, including a soft-magnetic backing layer; and a recording layer provided over the oft-magnetic backing layer. There is provided a magnetic flux slit layer between the soft-magnetic backing layer and the recording layer. The magnetic flux slit layer includes a soft-magnetic layer having a generally columnar structure generally isolated magnetically in an in-plane direction. The magnetic flux slit layer contains at least one selected from the group consisting of Co, Fe, Ni, a Co alloy, a Fe alloy, and a Ni alloy, as a major component, and the magnetic flux slit layer further contains any one selected from the group consisting of Ta, Cu, Pb, Cr, and Re.

Abstract: The method for manufacturing a magnetic recording medium in a shape of a disk includes forming convex sections repeating on the upper surface of an intermediate layer in the radial direction of the disk, and each having an upper surface that repulses magnetic particles; and filling the magnetic particles into concave sections sandwiched by the convex sections in a self-assembling way to form a magnetic recording layer with the magnetic particles.

Abstract: A magnetic recording medium includes; a base member; an underlayer formed on the base member; a main recording layer formed on the underlayer, and a writing assist layer formed on or under the main recording layer in contact with the main recording layer. The main recording layer has perpendicular magnetic anisotropy with an anisotropic magnetic field of Hk1 and an inclination of a reversal part of a magnetization curve of a1. The writing assist layer has an anisotropic magnetic field of Hk2 and an inclination of a reversal part of a magnetization curve of a2. The anisotropic magnetic fields Hk1 and Hk2 and the inclinations a1 and a2 satisfy Hk1>Hk2 and a2>a1.

Abstract: A magnetic recording medium suppresses effectively side erasure even when recording dot intervals are reduced. Magnetic dots and a soft magnetic layer are provided on a soft magnetic underlayer with a nonmagnetic layer intervening, so that magnetic dots are separated by the soft magnetic layer, and consequently leakage flux during recording to magnetic dots is absorbed by the soft magnetic layer, side erasure can be suppressed, and moreover the soft magnetic underlayer and soft magnetic layer are separated, so that an influence on recording/reproduction characteristics can be prevented.

Abstract: A magnetic recording medium for vertical magnetic recording includes a substrate, and a layer laminated on the substrate, including a first magnetic recording layer made of a granular material, an exchange-coupling-strength control layer, a second magnetic recording layer made of a granular material, and a third magnetic recording layer made of a non-granular material.

Abstract: A method of producing alloy nanoparticles includes the steps of: adding a metallic salt, a reducing agent, a stabilizing ligand, and an organic iron complex to an organic solvent selected from the group consisting of 2-20C hydrocarbon, alcohol, ether, and ester in an inert gas atmosphere to obtain a reaction liquid; and stirring the reaction liquid while heating the reaction liquid to a predetermined temperature. The grain diameter of the alloy nanoparticle is controlled by regulating the amount of the stabilizing ligand.

Abstract: A perpendicular magnetic recording medium at least comprises a perpendicular magnetic recording layer and a backing layer backing the perpendicular magnetic recording layer. The backing layer has an in-plane magnetization and is formed of a ferrimagnetic material having a compensation temperature in the vicinity of a recording/reproducing temperature in which reproducing of magnetic information is made from the perpendicular magnetic recording layer. A magnetic storage apparatus for recording and reproducing magnetic information using the perpendicular magnetic recording medium is also disclosed.

Abstract: A perpendicular magnetic memory medium capable of high-density recording and reproducing consists of a soft magnetic lining layer (12), a non-magnetic middle layer (13), a recording layer (14) that is formed by arranging hard magnetic nanoparticles (17), an overcoat layer (15), and a lubricous layer (16), all of which are arranged on a substrate (11) in this sequence, wherein an average diameter of the nanoparticles ranges between 2 nm and 10 nm, a standard deviation of diameters of the nanoparticles is 10% or less of the average diameter of the nanoparticles, and an average interval of the nanoparticles is between 0.2 nm and 5 nm, and an magnetic easy axis of the recording layer 14 is perpendicular to a face of the substrate (11), such that high-density recording and reproducing is realized by the perpendicular magnetic medium.

Abstract: A soft magnetic thin film in which the recording magnetic field in the perpendicular direction can be preferentially intensified and sharply controlled when the thin film is applied to a perpendicular magnetic recording medium is provided. This soft magnetic thin film can be obtained by immersing a substrate into an electroless plating bath that contains a Co ion, Fe ion, and Ni ion as metal ions, as well as a completing agent and a boron-type reducing agent, wherein the content ratios of the metal ions on the mole basis are 0.15? (Ni ion amount/the amount of total metal ions) ?0.40, 0.50? (Co ion amount/the amount of total metal ions) ?0.80, and 0.05? (Fe ion amount/the amount of total metal ions) ?0.15; and carrying out electroless plating in a magnetic field in a range of 5-2,000 Oe given in a direction parallel to the surface of said substrate.

Abstract: According to an aspect of an embodiment, a magnetic recording medium includes a substrate, and a first granular layer formed over the substrate, the first granular layer having a plurality of first magnetic particles and Si oxide separating the plurality of first magnetic particles. The magnetic recording medium further includes a second granular layer formed over the first granular layer, the second granular layer having a plurality of second magnetic particles and Ti oxide separating the plurality of second magnetic particles.

Abstract: A CPP-type magnetoresistive element including a fixed magnetization layer, a non-magnetic metal layer, and a free magnetization layer that are stacked, and a diffusion prevention layer is disclosed. The free magnetization layer includes CoMnAl. The diffusion prevention layer is provided between the non-magnetic metal layer and the free magnetization layer so as to prevent Mn included in the free magnetization layer from diffusing into the non-magnetic metal layer. CoMnAl has a composition within the area formed by connecting Point A (44, 23, 33), Point B (48, 25, 27), Point C (60, 20, 20), Point D (65, 15, 20), Point E (65, 10, 25), Point F (60, 10, 30), and Point A with straight lines in this order in a ternary composition diagram where coordinates of the composition are expressed as (Co content, Mn content, Al content) with each of the Co, Mn, and Al contents being expressed in atomic percentage.

Abstract: A vertical magnetic recording medium includes a substrate, a soft magnetic backing layer formed on the substrate, a magnetic flux confinement layer formed on the soft magnetic backing layer, an intermediate layer formed on the magnetic flux confinement layer, and a recording layer of a vertical magnetization film formed on the intermediate layer. The magnetic flux confinement layer has a plurality of soft magnetic parts each formed along a track region of plural track regions and a non-magnetic parts formed between adjacent track regions. The intermediate layer is formed of a non-magnetic material and is formed so as to cover a surface of the soft magnetic part and the non-magnetic parts.