Abstract: The magnetic recording medium includes a non-magnetic support; and a magnetic layer including a ferromagnetic powder, in which the ferromagnetic powder is an ?-iron oxide powder having an average particle size of 5.0 nm to 16.0 nm, a coercivity Hc in a vertical direction is 1,884 Oe to 3,141 Oe, a ten-point average roughness Rz of a surface of the magnetic layer is 35.0 nm to 45.0 nm, and a ratio Rp/Rz of a maximum peak height Rp of the surface of the magnetic layer to the Rz is 0.25 to 1.00.

Abstract: The magnetic recording medium includes: a non-magnetic support; and a magnetic layer including ferromagnetic powder and a binding agent, wherein the ferromagnetic powder is selected from the group consisting of hexagonal strontium ferrite powder and s-iron oxide powder, and has an average particle size of 5 nm or more and 20 nm or less, wherein the magnetic layer has a servo pattern, and wherein an average area Sdc of magnetic clusters of the magnetic recording medium in a DC demagnetization state, measured by a magnetic force microscope is 0.2×104 nm2 or more and less than 5.0×104 nm2.

Abstract: A magnetic recording medium for microwave-assisted recording, including a non-magnetic support; and a magnetic layer containing a ferromagnetic powder and a binding agent, in which the ferromagnetic powder has an average particle size of 5 nm to 20 nm, and a coefficient of variation of a particle size distribution of 35% or lower, and the magnetic layer has a thickness of 25.0 nm to 100.0 nm, and a thickness variation of 1.0 nm to 12.0 nm. A magnetic recording device including a magnetic recording medium and a magnetic head for microwave-assisted recording. A manufacturing method of a magnetic recording medium having a servo pattern on a magnetic layer.

Abstract: A hexagonal strontium ferrite powder, in which an average particle size is 10.0 to 25.0 nm, a content of one or more kinds of atom selected from the group consisting of a gallium atom, a scandium atom, an indium atom, and an antimony atom is 1.0 to 15.0 atom % with respect to 100.0 atom % of an iron atom, and a coercivity Hc is greater than 2,000 Oe and smaller than 4,000 Oe. A magnetic recording medium including: a non-magnetic support; and a magnetic layer including a ferromagnetic powder and a binding agent on the non-magnetic support, in which the ferromagnetic powder is the hexagonal strontium ferrite powder. A magnetic recording and reproducing apparatus including this magnetic recording medium.

Abstract: The magnetic recording medium includes a non-magnetic support; and a magnetic layer including a ferromagnetic powder and a binding agent on the non-magnetic support, in which the magnetic layer further includes a compound including one or more partial structures selected from the group consisting of a partial structure represented by Formula 1 and a partial structure represented by Formula 2, and a polyalkyleneimine chain. A magnetic recording and reproducing apparatus including this magnetic recording medium. A composition for a magnetic recording medium including a ferromagnetic powder and the compound. L1 in Formula 1 and L2 in Formula 2 each independently represent a divalent linking group, Z1 in Formula 1 and Z2 in Formula 2 each independently represent a monovalent group represented by —OM or a monovalent group represented by —O?A+, M represents a hydrogen atom or an alkali metal atom, and A+ represents an ammonium cation.

Abstract: An object of the present invention is to provide a pressure-sensitive adhesive sheet for a touch panel which is excellent for the operability of a capacitance-type touch panel, which is able to suppress the occurrence of malfunctions in a capacitance-type touch panel in a wide range of temperature environments from low temperatures to high temperatures, and which is also excellent in pressure-sensitive adhesion. In addition, another object of the present invention is to provide a laminate for a touch panel and a capacitance-type touch panel which include a pressure-sensitive adhesive sheet for a touch panel. In the pressure-sensitive adhesive sheet for a touch panel of the present invention, a relative dielectric constant obtained by impedance measurement at 1 MHz at 20° C. is 4.0 or more, a temperature dependency obtained from a temperature dependency evaluation test is 25% or less, and a 180 degree peel strength with respect to glass is 0.2 to 1.2 N/mm.

Abstract: Disclosed are a particle of a 13-iron oxyhydroxide-based compound represented by Formula (1), in which an average equivalent circle diameter of primary particles is 5 nm to 30 nm, and a coefficient of variation of equivalent circle diameters of the primary particles is 10% to 30% [In Formula (1), A represents at least one kind of metal element other than Fe, and a represents a number that satisfies a relationship of 0?a<1.], and applications thereof.

Abstract: Provided is a ferromagnetic powder for magnetic recording, in which an activation volume is 800 nm3 to 1,500 nm3, an average plate ratio is 2.0 to 5.0, a rare earth atom content is 0.5 atom % to 5.0 atom %, and an aluminum atom content is greater than 10.0 atom % and equal to or smaller than 20.0 atom %, with respect to 100 atom % of iron atom, and the ferromagnetic powder is a plate-shaped hexagonal strontium ferrite powder having a rare earth atom surface layer portion uneven distribution and an aluminum atom surface layer portion uneven distribution, and a magnetic recording medium including this ferromagnetic powder for magnetic recording in a magnetic layer.

Abstract: The invention provides a core-shell particle which can provide, by being calcinated, epsilon type iron oxide-based compound particles that have a small coefficient of variation of primary particle diameter and show excellent SNR and running durability when employed in a magnetic recording medium as well as applications thereof. The core-shell particle includes: a core including at least one iron oxide selected from Fe2O3 or Fe3O4, or iron oxyhydroxide; and a shell that coats the core, the shell including a polycondensate of a metal alkoxide and a metal element other than iron, as well as applications thereof.

Abstract: Provided is hexagonal strontium ferrite powder for magnetic recording, in which an activation volume is 800 to 1,500 nm3, a content of rare earth atom with respect to 100 atom % of iron atom is 0.5 to 5.0 atom %, and a rare earth atom surface portion uneven distribution is provided.

Abstract: A core-shell particle includes: a core including an iron oxyhydroxide compound represented by Formula A3a3Fe1?a3OOH (in which A3 represents at least one metal element other than Fe, and a3 satisfies 0<a3<1) or at least one iron oxide compound selected from the group consisting of Fe2O3, a compound represented by Formula A1a1Fe2?a1O3 (in which A1 represents at least one metal element other than Fe, and a1 satisfies 0<a1<2), Fe3O4, and a compound represented by Formula A2a2Fe3?a2O4 (in which A2 represents at least one metal element other than Fe, and a2 satisfies 0<a2<2); and a shell which covers the core and includes a polycondensate of a metal alkoxide.

Abstract: A magnetic recording medium includes: a non-magnetic support; and a magnetic layer including a binding agent and a ferromagnetic powder including at least one epsilon-type iron oxide compound selected from the group consisting of ?-Fe2O3 and compound represented by Formula (1) (A represents at least one metal element other than Fe, and a satisfies 0<a<2), in which a value of magnetic field Hc with respect to magnetic field Hc? is from 0.6 to 1.0, and Hc? satisfies Expression (II): 119 kA/m<Hc?<2380 kA/m. The magnetic field Hc? is a magnetic field when the value of Expression (I): d2M/dH2 is zero, wherein a magnetization M, which is obtained by a magnetic field-magnetization curve obtained by measurement under specific conditions, is subjected to second derivative with respect to an applied magnetic field H, and magnetic field Hc is a magnetic field when the magnetization is zero in the curve.

Abstract: The invention provides a layered body for a touch panel in which metal migration is suppressed and changes in the electrical resistance of a fine metal wire are suppressed, and a touch panel. The layered body for a touch panel of the invention is a layered body for a touch panel including a substrate, fine metal wires which are disposed on the substrate, and an adhesive layer which is disposed on the fine metal wires, in which the amount of the metal contained per unit area in the fine metal wire is in a range of 0.01 g/m2 to 10 g/m2, the adhesive layer contains a benzotriazole-based compound, and the content of the benzotriazole-based compound is in a range of 0.05 mass % to 1.5 mass % with respect to the total mass of the adhesive layer.

Abstract: Provided is a method for producing a conductive member including: forming a first silver halide emulsion layer, a light absorption layer, and a second silver halide emulsion layer on a transparent support in this order; performing pattern exposure on the first silver halide emulsion layer; and the second silver halide emulsion layer and applying a development treatment thereto to obtain a conductive layer comprising a thin metal wire, in which the light absorption layer absorbs at least some of the wavelengths of light to which the first silver halide emulsion layer or the second silver halide emulsion layer is exposed.

Abstract: An object of the present invention is to provide a pressure-sensitive adhesive sheet for a touch panel which is excellent for the operability of a capacitance-type touch panel, which is able to suppress the occurrence of malfunctions in a capacitance-type touch panel in a wide range of temperature environments from low temperatures to high temperatures, and which is also excellent in pressure-sensitive adhesion. In addition, another object of the present invention is to provide a laminate for a touch panel and a capacitance-type touch panel which include a pressure-sensitive adhesive sheet for a touch panel. In the pressure-sensitive adhesive sheet for a touch panel of the present invention, a relative dielectric constant obtained by impedance measurement at 1 MHz at 20° C. is 4.0 or more, a temperature dependency obtained from a temperature dependency evaluation test is 25% or less, and a 180 degree peel strength with respect to glass is 0.2 to 1.2 N/mm.

Abstract: Provided is a method for producing a conductive member including: forming a first silver halide emulsion layer, a light absorption layer, and a second silver halide emulsion layer on a transparent support in this order; performing pattern exposure on the first silver halide emulsion layer; and the second silver halide emulsion layer and applying a development treatment thereto to obtain a conductive layer comprising a thin metal wire, in which the light absorption layer absorbs at least some of the wavelengths of light to which the first silver halide emulsion layer or the second silver halide emulsion layer is exposed.

Abstract: This wiring board is provided with: a plurality of metal wires disposed upon an insulating substrate; and a transparent adhesive agent layer which is disposed upon the metal wires, and which is in direct contact with the metal wires. The metal wires include: a first metal wire which has a pulse signal supplied thereto; and a second metal wire which has a fixed electric potential applied thereto. The pulse signal has a reference level identical to the fixed electric potential, and has a pulse train in which a plurality of pulses having a pulse width of not more than 3 msec are arranged, the integral time of the pulses in a period of 600 seconds being less than 60 seconds.

Abstract: The invention provides a layered body for a touch panel in which metal migration is suppressed and changes in the electrical resistance of a fine metal wire are suppressed, and a touch panel. The layered body for a touch panel of the invention is a layered body for a touch panel including a substrate, fine metal wires which are disposed on the substrate, and an adhesive layer which is disposed on the fine metal wires, in which the amount of the metal contained per unit area in the fine metal wire is in a range of 0.01 g/m2 to 10 g/m2, the adhesive layer contains a benzotriazole-based compound, and the content of the benzotriazole-based compound is in a range of 0.05 mass % to 1.5 mass % with respect to the total mass of the adhesive layer.

Abstract: This wiring board is provided with: a plurality of metal wires disposed upon an insulating substrate; and a transparent adhesive agent layer which is disposed upon the metal wires, and which is in direct contact with the metal wires. The metal wires include: a first metal wire which has a pulse signal supplied thereto; and a second metal wire which has a fixed electric potential applied thereto. The pulse signal has a reference level identical to the fixed electric potential, and has a pulse train in which a plurality of pulses having a pulse width of not more than 3 msec are arranged, the integral time of the pulses in a period of 600 seconds being less than 60 seconds.

Abstract: The present invention provides a metal nanowire-containing composition containing at a least metal nanowire and a heterocyclic compound having an interaction potential of less than ?1 mV.