Abstract: An inorganic solid electrolytic rechargeable battery having positive and negative electrodes and an inorganic electrolyte interposed therebetween is provided. The positive and negative electrodes each contain an active material layer and a current collector layer. The positive electrode collector layer or the negative electrode collector layer is a conductive metal oxide layer. The negative electrode active material layer contains lithium metal or lithium alloys. This negative active layer may optionally be made of a material which provides an operation voltage potential of the negative electrode to be more noble than 1.0 V with respect to the potential of a metallic lithium.

Abstract: The carbon fibers of this invention is characterized in that irreducible inorganic material particles in a mean primary particle size below 500 nm and reducible inorganic material particles in a mean primary particle size below 500 nm were mixed by pulverizing and then, the mixture was heat treated under the reducing atmosphere and metal particles in a mean particle size below 1 ?m were obtained, and the mixed powder of the thus obtained metal particles with the irreducible inorganic material particles are included in the carbon fibers.

Abstract: A precursor particle having a particle size of 10 nm or more and 1 ?m or less, and comprising a first compound selected from an alkoxide, a hydroxide, a sulfate, a nitrate, a carbonate, or a carboxylate of magnetic metal containing at least one metal of Fe and Co, and a second compound selected from an alkoxide or a hydroxide, a sulfate, a nitrate, a carbonate, or a carboxylate of a metal element for forming an oxide, is prepared. Then the precursor particle is heated in a reducing atmosphere to form an insulating particle made of an oxide of the metal element by decomposing the second compound, and to precipitate a particle of the magnetic metal in the insulating particle at a particle size of 1 nm or more and 100 nm or less, thereby manufacturing a high frequency magnetic material.

Abstract: An antenna device arranged around a printed circuit board is provided. The antenna device has an antenna element connected to a feeder circuit provided on the printed board. The antenna device has an isolating material provided between the antenna element and the substrate material. The isolating material is constituted by an insulating substrate material and a plurality of pieces of magnetic material provided on the substrate material Adjacent ones of the pieces of the magnetic material are arranged separate from each other.

Abstract: An insulating magnetic metal particle includes a magnetic metal particle containing at least one metal selected from the group consisting of Co, Fe, and Ni and having a diameter of 5 to 500 nm, a first inorganic insulating layer made of an oxide that covers the surface of the magnetic metal particle, and a second inorganic insulating layer made of an oxide that produces a eutectic crystal by reacting together with the first inorganic insulating layer at the time of heating them, the second inorganic insulating layer being coated on the first inorganic insulating layer. A thickness ratio of the second inorganic insulating layer with respect to the first inorganic insulating layer is set so that the first inorganic insulating layer remains on the surface of the magnetic metal particle after producing the eutectic crystal.

Abstract: A magnetic material includes a substrate and a composite magnetic film formed on the substrate. The composite magnetic film comprises a plurality of columnar members formed on the substrate and having a longitudinal direction perpendicular to a surface of the substrate, each of the columnar members containing a magnetic metal or a magnetic alloy selected from at least one of Fe, Co, and Ni, and an inorganic insulator formed between the columnar members and selected from an oxide, a nitride, and fluoride of metal. The composite magnetic film has a minimum anisotropy magnetic field Hk1 in a surface parallel to the substrate surface and a maximum anisotropy magnetic field Hk2 in a surface parallel to the substrate surface, a ratio Hk2/Hk1 is greater than 1.

Abstract: A superior high-frequency magnetic material having a smaller ratio (??/??) of a real part ?? of permeability and an imaginary part ?? of permeability in a high-frequency region and an antenna system using thereof are provided. The high-frequency magnetic material includes a substrate and a composite magnetic film formed on the substrate and made of a magnetic phase forming a plurality of columnar bodies whose longitudinal direction is directed in a direction perpendicular to a surface of the substrate and an insulator phase filling gaps of the columnar bodies. The magnetic phase contains at least one of Nb, Zr, and Hf, and Fe and B, is amorphous, and has in-plane uniaxial anisotropy of Hk2/Hk1?3 and Hk2?3.98×103 A/m when a minimal anisotropic magnetic field in a plane parallel to the surface of the substrate is Hk1 and a maximal anisotropic magnetic field is Hk2.

Abstract: A high-frequency magnetic material is provided and includes: an oxide phase including: a first oxide of a first element being at least one selected from the group consisting of Mg, Al, Si, Ca, Zr, Ti, Hf, Zn, Mn, a rare-earth element, Ba, and Sr, and a second oxide of a second element being at least one selected from the group consisting of Li, Na, K, Rb, Cs, Be, Mg, Ca, Sr, Ba, and Zn, the first oxide and at least a part of the second oxide being formed into a solid solution; and magnetic metal particles including at least one of Fe and Co and having a particle size of 1 to 100 nm, the magnetic metal particles being deposited on a surface and inside of the oxide phase, the magnetic metal particles occupying 50% of a volume of the high-frequency magnetic material exclusive of a void.

Abstract: The present invention provides a core-shell magnetic material having an excellent characteristic in a high frequency band, particularly, in a GHz band.

Abstract: An inorganic solid electrolytic rechargeable battery having positive and negative electrodes and an inorganic electrolyte interposed therebetween is provided. The positive and negative electrodes each contain an active material layer and a current collector layer. The positive electrode collector layer or the negative electrode collector layer is a conductive metal oxide layer. The negative electrode active material layer contains lithium metal or lithium alloys. This negative active layer may optionally be made of a material which provides an operation voltage potential of the negative electrode to be more noble than 1.0 V with respect to the potential of a metallic lithium.

Abstract: The present invention provides a core-shell magnetic material having an excellent characteristic in a high frequency band, particularly, in a GHz band.

Abstract: An inorganic solid electrolytic rechargeable battery capable of offering excellent battery characteristics is disclosed. The battery has positive and negative electrodes and an inorganic electrolyte interposed therebetween. The positive and negative electrodes are each made up of an active material layer and a current collector layer. The positive electrode collector layer or the negative electrode collector layer is a conductive metal oxide layer. The negative electrode active material layer is made of lithium metals or lithium alloys. This negative active layer may alternatively be made of a material which causes an operation voltage potential of the negative electrode to become more noble than 1.0 V with respect to the potential of a metallic lithium. A complexity-reduced fabrication method of the rechargeable battery is also disclosed.

Abstract: The present invention provides a small antenna device realizing both miniaturization including lower profile and a broader band in a frequency band of hundreds MHz to 5 GHz and which can be mounted on a small device such as a cellular phone. An antenna device includes: a finite ground plane; a rectangular conductor plate provided above the finite ground plane, whose one side is connected to the finite ground plane, and having a bent portion substantially parallel with the one side; an antenna disposed substantially parallel with the finite ground plane above the finite ground plane, extending in a direction substantially perpendicular to the one side, and having a feeding point positioned near the other side facing the one side of the rectangular conductor plate; and a magnetic material provided in at least a part of space between the finite ground plane and the antenna.

Abstract: To provide a high-frequency magnetic material having a superior radio wave absorption property in a high frequency region and a method of manufacturing the same. The high-frequency magnetic material and the method of manufacturing the same includes a magnetic substance containing metal nanoparticles, the metal nanoparticles are magnetic metals containing at least one kind of Fe, Co, and Ni, an average particle diameter of the metal nanoparticles is equal to or less than 200 nm, first clusters having network-like structures with continuous metal nanoparticles and the average diameter equal to or less than 10 ?m are formed, second clusters having network-like structures with the continuous first clusters and the average diameter equal to or less than 100 ?m are formed, and the entire magnetic substance has a network-like structure with the continuous second clusters.

Abstract: The carbon fibers of this invention is characterized in that irreducible inorganic material particles in a mean primary particle size below 500 nm and reducible inorganic material particles in a mean primary particle size below 500 nm were mixed by pulverizing and then, the mixture was heat treated under the reducing atmosphere and metal particles in a mean particle size below 1 ?m were obtained, and the mixed powder of the thus obtained metal particles with the irreducible inorganic material particles are included in the carbon fibers.

Abstract: A superior high-frequency magnetic material having a smaller ratio (??/??) of a real part ?? of permeability and an imaginary part ?? of permeability in a high-frequency region and an antenna system using thereof are provided. The high-frequency magnetic material includes a substrate and a composite magnetic film formed on the substrate and made of a magnetic phase forming a plurality of columnar bodies whose longitudinal direction is directed in a direction perpendicular to a surface of the substrate and an insulator phase filling gaps of the columnar bodies. The magnetic phase contains at least one of Nb, Zr, and Hf, and Fe and B, is amorphous, and has in-plane uniaxial anisotropy of Hk2/Hk1?3 and Hk2?3.98×103 A/m when a minimal anisotropic magnetic field in a plane parallel to the surface of the substrate is Hk1 and a maximal anisotropic magnetic field is Hk2.

Abstract: A superior high-frequency magnetic material having a smaller ratio (??/??) of the real part ?? of permeability and the imaginary part ?? of permeability in a high-frequency region and an antenna device using thereof are provided. The high-frequency magnetic material includes a substrate and a composite magnetic film formed on the substrate that consists of a magnetic phase forming a plurality of columnar bodies whose longitudinal direction is directed in a direction perpendicular to a surface of the substrate and an insulator phase filling gaps of the columnar bodies, and the magnetic phase is amorphous and has in-plane uniaxial anisotropy of Hk2/Hk1?3 and Hk2?3.98×103 A/m when a minimal anisotropic magnetic field in a plane in parallel with the surface of the substrate is Hk1 and a maximal anisotropic magnetic field is Hk2.

Abstract: A high-impedance substrate is provided, which includes a metallic plate employed as a ground plane, a resonance circuit layer spaced away from the metallic plate by a distance “t”, the resonance circuit layer being provided with at least two resonance circuits having the same height and disposed side by side with a distance “g”, a connecting component connecting the resonance circuit with the metallic plate, and a magnetic material layer interposed between the metallic plate and the resonance circuit layer. The distance “t” between the metallic plate and the resonance circuit layer is confined within the range of 0.1 to 10 mm, the distance “g” between neighboring resonance circuits is confined within the range of 0.01 to 5 mm, the distance “h” between the magnetic material layer and the resonance circuit layer is confined within the range represented by the following inequality 1: g/2?h?t/2??inequality 1.

Abstract: A precursor particle having a particle size of 10 nm or more and 1 ?m or less, and comprising a first compound selected from an alkoxide, a hydroxide, a sulfate, a nitrate, a carbonate, or a carboxylate of magnetic metal containing at least one metal of Fe and Co, and a second compound selected from an alkoxide or a hydroxide, a sulfate, a nitrate, a carbonate, or a carboxylate of a metal element for forming an oxide, is prepared. Then the precursor particle is heated in a reducing atmosphere to form an insulating particle made of an oxide of the metal element by decomposing the second compound, and to precipitate a particle of the magnetic metal in the insulating particle at a particle size of 1 nm or more and 100 nm or less, thereby manufacturing a high frequency magnetic material.

Abstract: There is disclosed a metal particle-dispersed composite oxide comprising a matrix material containing a composite oxide comprising a non-reducible metal oxide and an easily reducible metal oxide, the composite oxide containing 0.01 to 0.25 mol % of at least one additive metal selected from Al, Sc, Cr, B, Fe, Ga, In, Lu, Nb and Si, surface metal particles precipitated on an outer surface of the matrix material containing the composite oxide, and inner metal particles precipitated on an inner surface of the matrix material containing the composite oxide.