Abstract: A soft magnetic iron alloy sheet has a saturation magnetic flux density comparable to that of Permendur, with the same iron loss as electromagnetic pure iron, and a lower cost than Permendur. The soft magnetic iron alloy sheet includes, as a chemical composition, 30 at % or less of Co, 0.1 at % or more and 11 at % or less of N, and 1.2 at % or less of vanadium, with the remainder being Fe and impurities. In a thickness direction of the soft magnetic iron alloy sheet, a surface layer region has an average nitrogen concentration of 1 at % or more and 15 at % or less and an internal region has a lower average nitrogen concentration than the surface layer region. In the surface layer region, a thickness is 1% or more and 30% or less from both main surfaces of the sheet and iron-nitride martensite having a tetragonal structure is formed.

Abstract: The present invention provides a soft magnetic iron sheet exhibiting a high saturation magnetic flux density and a low iron loss as compared with an electromagnetic pure iron sheet, a method for producing the soft magnetic iron sheet, and, an iron core and a dynamo-electric machine, each using the soft magnetic iron sheet. The soft magnetic iron sheet according to the present invention includes: iron as a main component; and nitrogen, in which the soft magnetic iron sheet includes, along a thickness direction of the soft magnetic iron sheet: a high nitrogen concentration layer having a nitrogen concentration of 2 at. % to 11 at.

Abstract: Provided are a soft magnetic material capable of achieving a high saturation density by reducing Co among soft magnetic materials made of a FeCo-based alloy, a method for producing a soft magnetic material, and an electric motor. The soft magnetic material of the present invention is a soft magnetic material containing Fe and Co in a total amount of 90 mass % or more, in which: contained components are 50 mass % or more of Fe, 40 mass % or less of Co, 0.1 mass % or less of C, 2.0 mass % or less of Ni, 0.2 mass % or less of Mn, Si, Cr, Ti, Nb, and V, and inevitable impurities; and the soft magnetic material contains a precipitate of a compound of iron and nitrogen. The precipitate is created by tension annealing a raw material of the soft magnetic material.

Abstract: The present invention aims at providing an iron-nitrogen-based soft magnetic steel sheet having a saturation magnetic flux density higher than that of pure iron, a method for manufacturing the soft magnetic steel sheet, and a core and a dynamo-electric machine in which the soft magnetic steel sheet is used. The soft magnetic steel sheet according to the present invention includes C, N, and the balance of Fe and inevitable impurities and is comprised of an ? phase, an ?? phase, an ?? phase, and a ? phase. The ? phase serves as a main phase, a volume ratio of the ?? phase is 10% or more, and a volume ratio of the ? phase is 5% or less. The core according to the present invention includes a laminated body of the soft magnetic steel sheets.

Abstract: A genetic algorithm controller that controls respective processes using a genetic algorithm is configured. The processes include generation of a crystal structure of an inorganic material, a mutation operation of a crystal structure, a crossing-over operation of a crystal structure, structural relaxation calculation of a crystal structure, calculation of a predictive value of an objective function, selection and weeding out of a crystal structure based on a predictive value of an objective function, observation of an objective function value of a crystal structure by first-principle calculation, update of a regression model based on a result of observing the objective function value, and end determination for a material generation process.

Abstract: A genetic algorithm controller that controls respective processes using a genetic algorithm is configured. The processes include generation of a crystal structure of an inorganic material, a mutation operation of a crystal structure, a crossing-over operation of a crystal structure, structural relaxation calculation of a crystal structure, calculation of a predictive value of an objective function, selection and weeding out of a crystal structure based on a predictive value of an objective function, observation of an objective function value of a crystal structure by first-principle calculation, update of a regression model based on a result of observing the objective function value, and end determination for a material generation process.

Abstract: The present invention provides, as a lithium-containing transition metal oxide, a substance which is given by the chemical compositional formula Li4M5O12 (M=Cr, Co, or Zr) and has a spinel-type crystal structure. Provided is a lithium ion secondary cell having a positive electrode configured from a lithium-containing transition metal oxide which has a spinel-type crystal structure and has the chemical compositional formula Li4M5O12 (M=Cr or Co). The present invention further provides a lithium ion secondary cell having a negative electrode configured from a lithium-containing transition metal oxide which has a spinel-type crystal structure and has the chemical compositional formula Li4M5O12 (M=Zr).

Abstract: Provided is a positive electrode active material for lithium ion secondary batteries, having a crystal structure containing a layered Li2MnO2 structure with a high theoretical electrical capacity as a basic skeleton, and having both a high theoretical electrical capacity and a high open-circuit voltage by increasing an open-circuit voltage to a value of more than 2 V by replacing a part of manganese ions with calcium ions by adding the calcium ions. That is, a positive electrode active material for secondary batteries mainly containing a compound represented by a chemical composition formula Li2?xMn1?yCayO2, and an electrode and a battery including the same are realized. In the formula, x satisfies 0<x<1.3, and y satisfies 0.2<y<0.9.

Abstract: Provided is a positive electrode active material for lithium ion secondary batteries, having a crystal structure containing a layered Li2MnO2 structure with a high theoretical electrical capacity as a basic skeleton, and having both a high theoretical electrical capacity and a high open-circuit voltage by increasing an open-circuit voltage to a value of more than 2 V by replacing a part of manganese ions with calcium ions by adding the calcium ions. That is, a positive electrode active material for secondary batteries mainly containing a compound represented by a chemical composition formula Li2-xMn1-yCayO2, and an electrode and a battery including the same are realized. In the formula, x satisfies 0<x<1.3, and y satisfies 0.2<y<0.9.

Abstract: A solid electrolyte comprises a ramsdellite-type crystal structure and has low activation energy of lithium ions and good lithium ion conductivity. The solid electrolyte is represented by the general formula Li4x?2a?3b?c?2dSn4?x?c?dM(II)aM(III)bM(V)cM(VI)dO8 [wherein M(II) is a divalent cation, M(III) is a trivalent cation, M(V) is a pentavalent cation, and M(VI) is a hexavalent cation, 0?x?1.33], wherein in the general formula, 0<a+b+c+d, 0?a+b?x, 0?c+d<0.9, and 3x?a?2b?c?2d?2. The all-solid-state battery includes the solid electrolyte in at least one layer of the positive electrode layer, negative electrode layer, and solid electrolyte layer. The method of making the solid electrolyte includes a step of preparing a mixed powder as a raw material and heating with microwave irradiation.

Abstract: To provide both resistance to reduction and high ion conductivity, a solid electrolyte includes a crystal having a structure expressed as A4-2x-y-zBxSn3-yMyO8-zNz (1?4?2x?y?z<4, A: Li, Na, B: Mg, Ca, Sr, Ba, M: V, Nb, Ta, N: F, Cl) or has a crystal having a structure expressed as A2-1.5x-0.5y-0.5zBxSn3-yMyO8-zNz (0.5?2?1.5x?0.5y?0.5z<2, A: Mg, Ca, B: Sc, Y, Sb, Si, M: V, Nb, Ta, N: F, Cl).

Abstract: The present invention has an object of providing a positive-electrode material for a non-aqueous electrolyte secondary battery having a 2? or higher dimensional lithium diffusion network structure of high lithium capacity, containing phosphoric acid of high thermal stability, and having lithium ions in which the ratio of the charge, compensation center and lithium ions exceeds 1:2. That is, a positive-electrode material for a secondary battery comprising a compound represented by the general formula A4?xM(PO4)2, and an electrode and a battery containing the same are provided. In the formula, M represents a transition metal (preferably, at least one member selected from the group consisting of Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, and Zn), A represents at least one of elements selected from alkali metals including Li, Na and K, and X represents 0?X?4.