Abstract: Provided are a thermistor which can have a satisfactory thermistor film using a metal substrate as well as a high humidity resistance and heat resistance; a method for producing the same; and a thermistor sensor. The thermistor according to the present invention includes a metal substrate 2, an insulating base film 3 formed on the metal substrate, and a thermistor film 4 formed on the insulating base film, wherein the insulating base film is formed so as to fill the irregularities on the surface of the metal substrate where the surface roughness of the insulating base film is lower than that of the metal substrate. In the method for producing this thermistor includes the steps of: applying polysilazane on the metal substrate; drying the polysilazane to form the insulating base film of SiOx containing nitrogen; and depositing the thermistor film on the insulating base film.

Abstract: A temperature sensor having excellent humidity resistance and responsivity is provided. The temperature sensor according to the present invention includes an insulating substrate 2; a thin film thermistor portion 3 made of a thermistor material formed on either surface of the insulating substrate; and an opposed electrode pair 5 consisting of a pair of opposed electrodes 4 formed so as to be opposed to each other on at least either one of the top and bottom surfaces of the thin film thermistor portion, wherein a plurality of the opposed electrode pairs are provided and connected to one another in series. As a result, a voltage applied to a unit thermistor composed of one opposed electrode pair becomes 1/n fold, which can suppress the electrode corrosion due to humidity load.

Abstract: A temperature sensor having excellent humidity resistance and responsivity is provided. The temperature sensor according to the present invention includes an insulating substrate 2; a thin film thermistor portion 3 made of a thermistor material formed on either surface of the insulating substrate; and an opposed electrode pair 5 consisting of a pair of opposed electrodes 4 formed so as to be opposed to each other on at least either one of the top and bottom surfaces of the thin film thermistor portion, wherein a plurality of the opposed electrode pairs are provided and connected to one another in series. As a result, a voltage applied to a unit thermistor composed of one opposed electrode pair becomes 1/n fold, which can suppress the electrode corrosion due to humidity load.

Abstract: A lightweight infrared sensor that detects a temperature at a portion spaced apart from a circuit substrate with high accuracy, is installed on the circuit substrate easily and stably, and includes an insulating film; a first and a second heat sensitive elements are disposed on one surface of the insulating film separately; a first conductive film on the insulating film that is connected to the first heat sensitive element; a second conductive film connected to the second heat sensitive element; an infrared reflection film on the other surface of the insulating film so as to face the second heat sensitive element; a plurality of terminal electrodes formed on one end of the insulating film and fitted into an external connector; an edge reinforcing plate adhered to one end of one surface of the insulating film; and a mounting hole that is formed on the other end.

Abstract: A lightweight infrared sensor which is readily and stably erected to a substrate, the infrared sensor includes an insulating film; a first and second heat sensitive element are disposed on one surface of the insulating film separately; a first and second conductive film on one surface of the insulating film and are respectively connected to the first and the second heat sensitive element; an infrared reflection film on the other surface of the insulating film so as to face the second heat sensitive element; a reinforcing plate on which a sensor part window corresponding to a sensor part is formed and which is adhered to the insulating film; and a first and a second terminal electrode are respectively connected to the first and the second wiring film and formed on the edge of the insulating film.

Abstract: Oxide-coated Fe powder for producing various electromagnetic circuit components requiring high resistivity is provided. The oxide-coated Fe powder is a Mg-containing oxide film-coated iron powder coated with an Mg—Fe—O ternary-based deposition film at least containing (Mg, Fe)O. The (Mg,Fe)O is a crystalline MgO-dissolving wustite. The Mg—Fe—O ternary-based oxide deposition film has a sulfur-enriched layer containing a higher concentration of sulfur than that of central portion of the iron powder, fine crystalline texture having a grain size of 200 nm or less, and the outermost surface is substantially composed of MgO. A composite soft magnetic material using the Mg-containing oxide film-coated iron powder is also provided.

Abstract: Provided is a lightweight infrared sensor which is readily and stably erected to a substrate. The infrared sensor includes an insulating film; a first and a second heat sensitive element are disposed on one surface of the insulating film separately; a first and second conductive film on one surface of the insulating film and are respectively connected to the first and the second heat sensitive element; and an infrared reflection film on the other surface of the insulating film so as to face the second heat sensitive element. The infrared sensor further includes a reinforcing plate on which a sensor part window corresponding to a sensor part is formed and which is adhered to the insulating film; and a first and a second terminal electrode are respectively connected to the first and the second wiring film, are formed on the edge of the insulating film.

Abstract: Provided is a lightweight infrared sensor that detects a temperature at a portion spaced apart from a circuit substrate with high accuracy, and is installed on the circuit substrate easily and stably. The infrared sensor includes an insulating film; a first and a second heat sensitive elements are disposed on one surface of the insulating film separately; a first conductive film on the insulating film that is connected to the first heat sensitive element; a second conductive film connected to the second heat sensitive element; an infrared reflection film on the other surface of the insulating film so as to face the second heat sensitive element; a plurality of terminal electrodes formed on one end of the insulating film and fitted into an external connector; an edge reinforcing plate adhered to one end of one surface of the insulating film; and a mounting hole that is formed on the other end.

Abstract: Oxide-coated Fe powder for producing various electromagnetic circuit components requiring high resistivity is provided. The oxide-coated Fe powder is a Mg-containing oxide film-coated iron powder coated with an Mg—Fe—O ternary-based deposition film at least containing (Mg, Fe)O. The (Mg,Fe)O is a crystalline MgO-dissolving wustite. The Mg—Fe—O ternary-based oxide deposition film has a sulfur-enriched layer containing a higher concentration of sulfur than that of central portion of the iron powder, fine crystalline texture having a grain size of 200 nm or less, and the outermost surface is substantially composed of MgO. A composite soft magnetic material using the Mg-containing oxide film-coated iron powder is also provided.

Abstract: A method for producing a soft magnetic metal powder coated with a Mg-containing oxide film, comprising the steps of adding and mixing a Mg powder with a soft magnetic metal powder which has been subjected to heating treatment in an oxidizing atmosphere at a temperature of 40 to 500° C. to obtain a mixed powder, and heating the mixed powder at a temperature of 150 to 1,100° C. in an inert gas or vacuum atmosphere under a pressure of 1×10?12 to 1×10?1 MPa, while optionally tumbling; and a method for producing a composite soft magnetic material from the soft magnetic metal powder coated with a Mg-containing oxide film.

Abstract: Oxide-coated Fe powder for producing various electromagnetic circuit components requiring high resistivity is provided. The oxide-coated Fe powder is a Mg-containing oxide film-coated iron powder coated with an Mg—Fe—O ternary-based deposition film at least containing (Mg, Fe)O. The (Mg,Fe)O is a crystalline MgO-dissolving wustite. The Mg—Fe—O ternary-based oxide deposition film has a sulfur-enriched layer containing a higher concentration of sulfur than that of central portion of the iron powder, fine crystalline texture having a grain size of 200 nm or less, and the outermost surface is substantially composed of MgO. A composite soft magnetic material using the Mg-containing oxide film-coated iron powder is also provided.

Abstract: A method for producing a soft magnetic metal powder coated with a Mg-containing oxide film, comprising the steps of adding and mixing a Mg powder with a soft magnetic metal powder which has been subjected to heating treatment in an oxidizing atmosphere at a temperature of 40 to 500° C. to obtain a mixed powder, and heating the mixed powder at a temperature of 150 to 1,100° C. in an inert gas or vacuum atmosphere under a pressure of 1×10?12 to 1×10?1 MPa, while optionally tumbling; and a method for producing a composite soft magnetic material from the soft magnetic metal powder coated with a Mg-containing oxide film.

Abstract: A flat soft magnetic metal powder is provided that includes: Ni in the range of 60 to 90 mass %, one or more kinds of Nb, V, and Ta in the range of 0.05 to 20 mass % in total (0.05 to 19.95 mass % when Mo is added thereto), Mo in the range of 0.05 to 10 mass % if necessary, one or two kinds of Al and Mn in the range of 0.01 to 1 mass % in total if necessary, and the balance including Fe; an average grain size of 30 to 150 ?m and an aspect ratio (average grain size/average thickness) of 5 to 500; and a flat face. Here, with a peak intensity of a face index (220) in an X-ray diffraction pattern I220 and a peak intensity of a face index (111) I111, a peak intensity ratio I220/I111 is in the range of 0.1 to 10.

Abstract: The invention provides an Fe—Ni—Mo soft magnetic flaky powder having a component composition of, in percent by mass, Ni: 60 to 90%, Mo: 0.05 to 1.95%, and the balance of Fe and unavoidable impurities, and a flat surface of an average particle size of 30 to 150 ?m, and an aspect ratio (average particle size /average thickness) of 5 to 500; and having a peak intensity ratio I200/I111 within a range between 0.43 and 10, where I200 is the peak height of the face index (200) and I111 is the peak height of the face index (111), in an X-ray diffraction pattern measured in such a manner that the plane including the X-ray incident direction and the diffraction direction is perpendicular to the flat surface of the soft magnetic flaky powder, and the angle between the incident direction and the flat surface is equal to the angle between the diffraction direction and the flat surface.

Abstract: Oxide-coated Fe powder for producing various electromagnetic circuit components requiring high resistivity is provided. The oxide-coated Fe powder is a Mg-containing oxide film-coated iron powder coated with an Mg—Fe—O ternary-based deposition film at least containing (Mg, Fe)O. The (Mg,Fe)O is a crystalline MgO-dissolving wustite. The Mg—Fe—O ternary-based oxide deposition film has a sulfur-enriched layer containing a higher concentration of sulfur than that of central portion of the iron powder, fine crystalline texture having a grain size of 200 nm or less, and the outermost surface is substantially composed of MgO. A composite soft magnetic material using the Mg-containing oxide film-coated iron powder is also provided.

Abstract: The invention provides an Fe—Ni—Mo soft magnetic flaky powder having a component composition of, in percent by mass, Ni: 60 to 90%, Mo: 0.05 to 1.95%, and the balance of Fe and unavoidable impurities, and a flat surface of an average particle size of 30 to 150 ?m, and an aspect ratio (average particle size /average thickness) of 5 to 500; and having a peak intensity ratio I200/I111 within a range between 0.43 and 10, where I200 is the peak height of the face index (200) and I111 is the peak height of the face index (111), in an X-ray diffraction pattern measured in such a manner that the plane including the X-ray incident direction and the diffraction direction is perpendicular to the flat surface of the soft magnetic flaky powder, and the angle between the incident direction and the flat surface is equal to the angle between the diffraction direction and the flat surface.

Abstract: A flat soft magnetic metal powder is provided that includes: Ni in the range of 60 to 90 mass %, one or more kinds of Nb, V, and Ta in the range of 0.05 to 20 mass % in total (0.05 to 19.95 mass % when Mo is added thereto), Mo in the range of 0.05 to 10 mass % if necessary, one or two kinds of Al and Mn in the range of 0.01 to 1 mass % in total if necessary, and the balance including Fe; an average grain size of 30 to 150 ?m and an aspect ratio (average grain size/average thickness) of 5 to 500; and a flat face. Here, with a peak intensity of a face index (220) in an X-ray diffraction pattern I220 and a peak intensity of a face index (111) I111, a peak intensity ratio I220/I111 is in the range of 0.1 to 10.

Abstract: A method for producing a soft magnetic metal powder coated with a Mg-containing oxide film, comprising the steps of adding and mixing a Mg powder with a soft magnetic metal powder which has been subjected to heating treatment in an oxidizing atmosphere at a temperature of 40 to 500° C. to obtain a mixed powder, and heating the mixed powder at a temperature of 150 to 1,100° C. in an inert gas or vacuum atmosphere under a pressure of 1×10?12 to 1×10?1 MPa, while optionally tumbling; and a method for producing a composite soft magnetic material from the soft magnetic metal powder coated with a Mg-containing oxide film.

Abstract: The invention provides an Fe—Ni—Mo soft magnetic flaky powder having a component composition of, in percent by mass, Ni: 60 to 90%, Mo: 0.05 to 1.95%, and the balance of Fe and unavoidable impurities, and a flat surface of an average particle size of 30 to 150 ?m, and an aspect ratio (average particle size /average thickess) of 5 to 500; and having a peak intensity ratio I200/I111 within a range between 0.43 and 10, where I200 is the peak height of the face index (200) and I111 is the peak height of the face index (111), in an X-ray diffraction pattern measured in such a manner that the plane including the X-ray incident direction and the diffraction direction is perpendicular to the flat surface of the soft magnetic flaky powder, and the angle between the incident direction and the flat surface is equal to the angle between the diffraction direction and the flat surface.

Abstract: An antenna device of an interrogator which constitutes an automatic identification system by exchanging information with an IC tag attached to an object to be identified by electromagnetic coupling is disclosed. The antenna device comprises an antenna element, and a capacitor connected in series to the antenna element and having a variable capacitance to maintain a predetermined resonance frequency. The predetermined resonance frequency is maintained by switching taps on an antenna coil. Alternatively, the predetermined resonance frequency is maintained by switching taps on a tapped inductor or by a variable inductor.