Abstract: A composite magnetic body according to one aspect of the present invention includes a first metal magnetic particle covered with a first resin portion made of a first resin material and a second metal magnetic particle having a smaller particle size than the first metal magnetic particle, where the second metal magnetic particle is bound to the first metal magnetic particle via a second resin portion made of a second resin material, the second resin material having a softening point higher than the first resin material.

Abstract: A coil component includes: a magnetic base body formed by metal magnetic grains containing Fe, Si, and Cr, whose intensity ratio (IM/IH) of the strongest line intensity (IM) in a range of wavenumbers 650 to 750 cm?1, to the strongest line intensity (IH) in a range of wavenumbers 400 to 450 cm?1, in a Raman spectrum measured at the center part is 2 or higher, and which also has a part on the surface side of the center part where the intensity ratio (IM/IH) in a Raman spectrum is under 2; and a conductor placed inside or on the surface of the magnetic base body. The magnetic base body is constituted by a powder magnetic core made to have excellent electrical insulating property and high magnetic permeability.

Abstract: One aspect of the present invention is a coil component comprising: a magnetic substrate formed with magnetic metal particles containing Fe, Si and Cr, and a bonding layer containing oxygen and nitrogen that bonds the magnetic metal particles to each other; and a conductor arranged inside or on the surface of the magnetic substrate.

Abstract: A composite magnetic body according to one aspect of the present invention includes a first metal magnetic particle covered with a first resin portion made of a first resin material and a second metal magnetic particle having a smaller particle size than the first metal magnetic particle, where the second metal magnetic particle is bound to the first metal magnetic particle via a second resin portion made of a second resin material, the second resin material having a softening point higher than the first resin material.

Abstract: A winding-type coil component whose core member is constituted by: soft magnetic alloy grains 210 containing Fe, Si, and at least one of Cr and Al, as constituent elements; and an oxide layer 220 which is formed around the soft magnetic alloy grains to bond the soft magnetic alloy grains together and contains Si, as well as at least one of Cr and Al, as constituent elements, and whose content of Si based on mass is higher than the total content of Cr and Al. The winding-type coil component has high mechanical strength.

Abstract: A composite magnetic body according to one aspect of the present invention includes a first metal magnetic particle covered with a first resin portion made of a first resin material and a second metal magnetic particle having a smaller particle size than the first metal magnetic particle, where the second metal magnetic particle is bound to the first metal magnetic particle via a second resin portion made of a second resin material and the second resin material has a larger molecular weight than the first resin material.

Abstract: A coil component includes: a magnetic base body formed by metal magnetic grains containing Fe, Si, and Cr, whose intensity ratio (IM/IH) of the strongest line intensity (IM) in a range of wavenumbers 650 to 750 cm?1, to the strongest line intensity (IH) in a range of wavenumbers 400 to 450 cm?1, in a Raman spectrum measured at the center part is 2 or higher, and which also has a part on the surface side of the center part where the intensity ratio (IM/IH) in a Raman spectrum is under 2; and a conductor placed inside or on the surface of the magnetic base body. The magnetic base body is constituted by a powder magnetic core made to have excellent electrical insulating property and high magnetic permeability.

Abstract: One aspect of the present invention is a coil component comprising: a magnetic substrate formed with magnetic metal particles containing Fe, Si and Cr, and a bonding layer containing oxygen and nitrogen that bonds the magnetic metal particles to each other; and a conductor arranged inside or on the surface of the magnetic substrate.

Abstract: A winding-type coil component whose core member is constituted by: soft magnetic alloy grains 210 containing Fe, Si, and at least one of Cr and Al, as constituent elements; and an oxide layer 220 which is formed around the soft magnetic alloy grains to bond the soft magnetic alloy grains together and contains Si, as well as at least one of Cr and Al, as constituent elements, and whose content of Si based on mass is higher than the total content of Cr and Al. The winding-type coil component has high mechanical strength.

Abstract: A composite magnetic body according to one aspect of the present invention includes a first metal magnetic particle covered with a first resin portion made of a first resin material and a second metal magnetic particle having a smaller particle size than the first metal magnetic particle, where the second metal magnetic particle is bound to the first metal magnetic particle via a second resin portion made of a second resin material and the second resin material has a larger molecular weight than the first resin material.

Abstract: A magnetic body constituted by magnetic grains bonded together via oxide film, which magnetic grains contain a Fe—Si-M soft magnetic alloy (where M is a metal element more easily oxidized than Fe) that contains sulfur atoms (S). The magnetic body preferably contains 0.004 to 0.012 percent by weight of S, 1.5 to 7.5 percent by weight of Si, and 2 to 8 percent by weight of metal M.

Abstract: In some embodiments, a magnetic body 1 has soft magnetic alloy grains 11 that contain Fe, M (M is a metal element that oxidizes more easily than Fe), and S, as well as oxide films 12 produced by partial oxidization of the soft magnetic alloy grains 11, wherein the magnetic body 1 has its adjacent soft magnetic alloy grains 11 bonded together at least partially through the oxide films 12, and contains Fe by 92.5 to 96 percent by weight and S by 0.003 to 0.02 percent by weight. The magnetic body can have high levels of both magnetic permeability and volume resistivity, to meet the demand for smaller, higher-performance electronic components.

Abstract: In an embodiment, a magnetic body includes: multiple soft magnetic alloy grains 11, 12 each containing Fe, element L (where element L is Si, Zr or Ti), and element M (where Element M is an element other than Si, Zr, and Ti, and which oxidizes more easily than Fe); oxide films 21, 22 covering the soft magnetic alloy grains, respectively; a bonding material 30 constituted by an oxide that exists separately from the oxide films 21 (21A, 21B), 22 (22A, 22B); first bonds where adjacent soft magnetic alloy grains 11, 12 are bonded together via the oxide films 21, 22; and second bonds where adjacent soft magnetic alloy grains 11, 12 are bonded together via the bonding material 30, without the oxide films 21, 22 that respectively cover these grains making direct contact with each other.

Abstract: A coil component having a magnetic material and a coil formed on a surface of or inside the magnetic material. The magnetic material is constituted by a grain compact formed by compacting multiple metal grains that in turn are constituted by an Fe—Si—M soft magnetic alloy (where M is a metal element that oxidizes more easily than Fe), wherein individual metal grains have oxide film formed at least partially around them; the grain compact is formed primarily via bonding between oxide films formed around adjacent metal grains; and the apparent density of the grain compact 1 is 5.2 g/cm3 or more, or preferably 5.2 to 7.0 g/cm3.

Abstract: In an embodiment, a magnetic body includes: multiple soft magnetic alloy grains 11, 12 each containing Fe, element L (where element L is Si, Zr or Ti), and element M (where Element M is an element other than Si, Zr, and Ti, and which oxidizes more easily than Fe); oxide films 21, 22 covering the soft magnetic alloy grains, respectively; a bonding material 30 constituted by an oxide that exists separately from the oxide films 21 (21A, 21B), 22 (22A, 22B); first bonds where adjacent soft magnetic alloy grains 11, 12 are bonded together via the oxide films 21, 22; and second bonds where adjacent soft magnetic alloy grains 11, 12 are bonded together via the bonding material 30, without the oxide films 21, 22 that respectively cover these grains making direct contact with each other.

Abstract: In some embodiments, a magnetic body 1 has soft magnetic alloy grains 11 that contain Fe, M (M is a metal element that oxidizes more easily than Fe), and S, as well as oxide films 12 produced by partial oxidization of the soft magnetic alloy grains 11, wherein the magnetic body 1 has its adjacent soft magnetic alloy grains 11 bonded together at least partially through the oxide films 12, and contains Fe by 92.5 to 96 percent by weight and S by 0.003 to 0.02 percent by weight. The magnetic body can have high levels of both magnetic permeability and volume resistivity, to meet the demand for smaller, higher-performance electronic components.

Abstract: A magnetic material constituted by a grain compact 1 obtained by shaping metal grains 11 and then heat-treating them in an oxidizing ambience, wherein the metal grains 11 are made of a Fe—Cr—Si alloy and their FeMetal/(FeMetal+FeOxide) ratio as measured before shaping by XPS, with respect to the sum of integral values at the peaks of 709.6 eV, 710.7 eV and 710.9 eV, or FeOxide, and peak integral value at 706.9 eV, or FeMetal, is 0.2 or more.

Abstract: A coil-type electronic component having a coil inside or on the surface of a base material is characterized in that the base material of the coil-type electronic component is constituted by a group of soft magnetic alloy grains inter-bonded via oxide layers, multiple crystal grains are present in each soft magnetic alloy grain, and the oxide layers preferably have a two-layer structure whose outer layer is thicker than the inner layer.

Abstract: A magnetic body constituted by magnetic grains bonded together via oxide film, which magnetic grains contain a Fe—Si-M soft magnetic alloy (where M is a metal element more easily oxidized than Fe) that contains sulfur atoms (S). The magnetic body preferably contains 0.004 to 0.012 percent by weight of S, 1.5 to 7.5 percent by weight of Si, and 2 to 8 percent by weight of metal M.

Abstract: A coil-type electronic component having a coil inside or on the surface of a base material, characterized in that the base material of the coil-type electronic component is constituted by a group of soft magnetic alloy grains whose main ingredients are iron, silicate and chromium, and that an oxide layer is formed on the surface of each soft magnetic alloy grain, where the oxide layer is produced as a result of oxidization of the grain and has more chromium than the alloy grain, and this oxide layer has a two-layer structure constituted by an inner layer whose main ingredient is chromium oxide and an outer layer whose main ingredient is iron-chromium oxide, and the outer layers of soft magnetic alloy grains are inter-bonded.