Abstract: A method for producing magnetic particles containing a manganese-aluminum alloy, the method including: mixing manganese particles, an aluminum source, an activator containing a halide, and an anti-sintering agent to obtain a mixed powder, in which the manganese particles have a maximum particle diameter of 50 ?m or less, and the anti-sintering agent has a maximum particle diameter of 0.0002 times or more and 3 times or less the maximum particle diameter of the manganese particles; heating the mixed powder to a temperature in a range of 1,000° C. to 1,235° C. to perform a calorizing treatment on the manganese particles to obtain a treated mixture that comprises particles containing a manganese-aluminum alloy, in which the manganese-aluminum alloy has a ratio (Al/Mn) of aluminum to manganese in a range of 25/75 to 35/65 in mass ratio; and collecting the particles containing a manganese-aluminum alloy from the treated mixture.

Abstract: An yttrium-based protective film has a porosity of less than 1.5 volume %, a Young's modulus of 100.00 GPa or more, and a Vickers hardness of 8.50 GPa or more. A method for producing the yttrium-based protective film includes evaporating an evaporation source and depositing the evaporation source onto a substrate while irradiating with ions of at least one element selected from the group consisting of oxygen, argon, neon, krypton, and xenon from an ion gun in a vacuum. Y2O3 or a combination of Y2O3 and YF3 is used as the evaporation source.

Abstract: A glass which contains, in mol percentage on an oxide basis, SiO2: 35% to 60%, B2O3: 0.8% to 8%, Al2O3: 6% to 21%, and MgO: 17% to 44%. Additionally, (MgO/Al2O3)?1 is satisfied, a measured Madelung constant m calculated by an expression (1A) is equal to or larger than 1.05, and a thermal expansion factor as a ratio of a measured value ? of a linear thermal expansion coefficient to a calculated value ?cal of a linear thermal expansion coefficient calculated from composition is equal to or smaller than 0.7. Herein, E is a measured value of a Young's modulus of the glass, Vp is an average atomic packing factor of the glass, and Gt is average bond dissociation energy of the glass.

Abstract: An object is to provide a method for producing a fluorine-containing compound by using an easily available compound under relatively mild reaction conditions to produce a fluorine-containing compound, and a method for producing a surface treatment agent using the fluorine-containing compound obtained by the production method. A method for producing a fluorine-containing compound represented by the following formula (C1) or (C2), the method including: reacting a compound represented by the following formula (A1) or (A2) with a compound represented by the following formula (B1). G1-L1-CR1R2—X1??Formula (A1) X2—CR3R4-L2-G2-L3-CR5R6—X3??Formula (A2) R11—MgR12??Formula (B1) G1-L1-CR1R2—R11??Formula (C1) R11—CR3R4-L2-G2-L3-CR5R6—R11??Formula (C2) where, each reference sign in the formula is as described in the specification.

Abstract: An aqueous dispersion including a hydroxyl-terminated urethane prepolymer obtained by reacting an oxyalkylene polymer A in which an average number of hydroxyl groups per molecule is more than 2.0 and 3.0 or less, an oxyalkylene polymer B in which an average number of hydroxyl groups per molecule is 1.2 or more and 2.0 or less, and a diisocyanate compound, where a content proportion of oxyethylene groups to a total amount of oxyalkylene groups in the oxyalkylene polymer A is 15% by mass or more, a content proportion of oxyethylene groups to a total amount of oxyalkylene groups in the oxyalkylene polymer B is 15% by mass or more, and a content proportion of oxyethylene groups to a total amount of oxyalkylene groups in the hydroxyl-terminated urethane prepolymer is more than 20% by mass and 70% by mass or less.

Abstract: To provide a copolymer capable of forming a coated electrical wire excellent in engine oil resistance, a composition, a molded product, and a coated electrical wire. The copolymer of the present invention is a copolymer comprising units based on ethylene, units based on tetrafluoroethylene, and units based on compound A represented by CH?CX(CF2)nY (wherein X and Y are each independently a hydrogen atom or a fluorine atom, and n is an integer of from 2 to 6) or compound B represented by CF2?CF—O—C3F7, wherein the crystal lamella thickness determined by the small angle X-ray scattering method is at most 4.0 nm and the melting point is at least 245° C.

Abstract: The heat transfer medium of the present invention comprises a compound (A) represented by the following formula (1): R A - O - R 1 - O - R B ( 1 ) wherein RA is a perfluoroalkenyl group having 2 to 4 carbon atoms; RB is a fluoroalkyl group having 2 to 4 carbon atoms or a fluoroalkenyl group having 2 to 4 carbon atoms; and R1 is an alkylene group having 1 to 4 carbon atoms.

Abstract: A piezoelectric laminate, including: a substrate; and a laminated film provided on at least one surface of the substrate, in which the laminated film includes, in order from a substrate side, a first base layer, an electrode layer, and a piezoelectric thin film layer, the first base layer is in contact with the electrode layer, and the first base layer contains a nitrogen compound containing at least one element selected from the group consisting of Group III to VI elements.

Abstract: The hydrofluoroether composition comprises 1,1,1,2,3,3-hexafluoro-3-[2-(1,1,2,3,3,3-hexafluoropropoxy)ethoxy]propane, and 1,2,3,3,3-pentafluoro-1-[2-(1,1,2,3,3,3-hexafluoropropoxy)ethoxy]-1-propene, wherein the content of the 1,2,3,3,3-pentafluoro-1-[2-(1,1,2,3,3,3-hexafluoropropoxy)ethoxy]-1-propene is 0.0001% by mass or higher and lower than 2.0000% by mass.

Abstract: There is provided a method of producing a fluorine-containing elastomer, the method comprising a step of polymerizing a monomer A containing a compound represented by CX1X2?CX3-L-Z, a cyano group-containing monomer, and at least one selected from the group consisting of tetrafluoroethylene, a fluorine-containing vinyl ether, and a fluorine-containing allyl ether under a condition in which an emulsifier having a fluorine atom is substantially absent in an aqueous medium.

Abstract: An optical sensor cover comprises an optically-transparent substrate and a linear heating element provided in the substrate. The heating element comprises a plurality of wiring segments arranged in an in-plane direction of the substrate and partitioned by a plurality of imaginary square lattice cells each having one side of 10 mm. The plurality of wiring segments include a first and a second wiring segment. The first wiring segment is a wiring segment including a position where a distance from an edge of the substrate is ?20 mm. The second wiring segment is a wiring segment including no position where a distance from the edge is ?20 mm, or, if none exists, a wiring segment including a position farthest from the edge. L?n/Ln and L?m/Lm are lower than 1.2. Rn/Ln of 50% or more of all first wiring segments is lower than Rm/Lm of the second wiring segment.

Abstract: A piezoelectric laminate, including: a substrate; and a laminated film provided on at least one surface of the substrate, in which the laminated film includes, in order from a substrate side, an electrode layer, a base layer, and a piezoelectric thin film, the base layer and the piezoelectric thin film are in contact with each other, the base layer contains a nitrogen compound containing at least one element selected from the group consisting of Group III to VI elements, and the piezoelectric thin film has an absolute value |e31f| of a piezoelectric constant of 0.5 C/m2 or more.

Abstract: A radio transmission system in which the communication environment is improved by an electromagnetic-wave reflecting apparatus is provided. The radio transmission system comprises: a transmitting antenna configured to transmit a radio wave in a predetermined frequency band selected from frequencies ranging from 1 GHz to 300 GHz; a receiving antenna configured to receive a radio wave in the frequency band; and an electromagnetic-wave reflecting apparatus configured to form a reflection surface which reflects a radio wave in the frequency band. The electromagnetic-wave reflecting apparatus includes a reflection surface formed of one or more reflection panels. A distance d1 from the transmitting antenna to a reflection point on the reflection surface, a distance d2 from the reflection point to the receiving antenna, a wavelength ? of the frequency band, and a length L of a side or a short side of the reflection surface satisfy L?2×[?·d1·d2/(d1+d2)]1/2.

Abstract: A composition and the like capable of forming a surface-treated layer with excellent water repellency and excellent abrasion resistance are provided. A composition or the like comprising: a first compound having an organo (poly)siloxane residue and a reactive silyl group a; and a second compound having: a hydrocarbon group comprising four or more carbon atoms having no organo (poly)siloxane residue, not directly bonded to an oxygen atom, and optionally having a functional group or a substituent; and a reactive silyl group b, wherein the composition or the like satisfies at least one of Requirements (1) and (2) shown below. Requirement (1): in the first compound, two or more reactive silyl groups a are connected to at least one of ends of the organo (poly)siloxane residue. Requirement (2): in the second compound, two or more reactive silyl groups b are connected to at least one of ends of the hydrocarbon group.

Abstract: This reflective mask blank has, in the following order, a substrate, a multilayer reflective film that reflects EUV light, and an absorbing film that absorbs EUV light, and further has a conductive film on a side opposite to the multilayer reflective film from the substrate from as a reference. The conductive film has a Young's modulus of 250 GPa or less as measured by the nanoindenter.

Abstract: A reflective mask blank has a substrate, a multilayer reflective film configured to reflect EUV light, and an absorbing film configured to absorb the EUV light in this order, and has a conductive film on the opposite side of the multilayer reflective film from the substrate. A coefficient of dynamic friction of the conductive film on the surface opposite the substrate is less than 0.45, measured in a nitrogen atmosphere at room temperature.

Abstract: A composition and the like capable of forming a surface-treated layer with excellent liquid repellency and excellent durability are provided. A composition comprises: a first compound having an organo (poly) siloxane residue, an alkylene chain comprising three or more carbon atoms, and a reactive silyl group a; and a second compound having: a hydrocarbon group comprising four or more carbon atoms, which has no organo (poly) siloxane residue and may have a functional group or a substituent; and a reactive silyl group b, wherein the composition satisfies Requirements (1) and (2) shown below: Requirement (1): in the first compound, one reactive silyl group a is connected to at least one of ends of the organo (poly) siloxane residue; and Requirement (2): in the second compound, one reactive silyl group b is connected to at least one of ends of the hydrocarbon group.

Abstract: A radio transmission system which achieves both the improvement of a radio-wave propagation environment and the reduction of the occurrence of leakage of radio waves to the outside of a required space is provided. The radio transmission system comprises: a plurality of electromagnetic-wave reflecting apparatuses provided on respective sides of a passage along a traveling direction of the passage, each of the electromagnetic-wave reflecting apparatuses being configured to reflect a radio wave in a predetermined band selected from 1 MHz or higher and 300 GHz or lower; and a leaky coaxial cable disposed in an area surrounded by the plurality of the electromagnetic-wave reflecting apparatuses provided on the respective sides of the passage and a floor surface of the passage, the leaky coaxial cable being connected to a base station.

Abstract: An yttrium-based protective film includes 0.10 atom % to 3.00 atom % of argon. A method for producing the yttrium-based protective film includes evaporating an evaporation source and depositing the evaporation source onto a substrate while irradiating with ions of at least one element selected from the group consisting of oxygen, argon, neon, krypton, and xenon from an ion gun in a vacuum, and Y2O3 or a combination of Y2O3 and YF3 is used as the evaporation source.

Abstract: Provided is a reflective mask blank containing Pt and having low crystallinity. The reflective mask blank includes, in the following order, a substrate, a multilayer reflective film configured to reflect EUV light, a protective film and a phase shift film configured to cause a phase shift in EUV light, wherein the phase shift film contains Pt and at least one first element X1 selected from the group consisting of Cr, Hf, Ta and W, wherein the content of the first element X1 in the phase shift film is 10.0 atomic % or more and less than 70.0 atomic % relative to all atoms in the phase shift film, and wherein when the phase shift film is analyzed by X-ray photoelectron spectroscopy, the chemical shift of the Pt 4f7/2 peak is 0.3 eV or more.