Abstract: A magnetic base body according to an embodiment of the present invention includes a metal magnetic particle and an amorphous silicon oxide film provided on a surface of the metal magnetic particle, the amorphous silicon oxide film having a structural defect introduced therein.

Abstract: In an exemplary embodiment, a coil component includes: an element body part 10 that contains magnetic metal grains and nonmagnetic materials and has insulation property; and a coil 30 embedded in the element body part 10 and formed by a winding conductor. The element body part 10 has a main part 11 and a low magnetic permeability part 50 whose relative permeability is lower than that of the main part 11; the coil 30 has a first surface 36 and a second surface 38 respectively representing surfaces positioned on opposite sides in the direction of the coil axis and intersecting the coil axis; and the low magnetic permeability part 50 is provided between a first plane 37 flush with the first surface 36, and a second plane 39 flush with the second surface 38, in a manner away from the first plane 37 and the second plane 39.

Abstract: In an embodiment, a magnetic body includes soft magnetic alloy grains 11 containing Fe, element L, and element M (where element L is Si or Zr and element M is a metal element other than Si or Zr that oxidizes more easily than Fe), as well as oxide film produced from oxidization of part of these grains 11; wherein at least some of the bonds between adjacent soft magnetic alloy grains 11 are by way of the oxide film; the oxide film has an inner film 12a, and an outer film 12b positioned on the outer side of the inner film 12a; and the inner film 12a contains more of element L than element M, while the outer film 12b contains more of element M than element L.

Abstract: One object is to provide a laminated inductor having a reduced thickness without reduction in the magnetic characteristic and the insulation quality. The laminated inductor includes a first magnetic layer, an internal conductor, second magnetic layers, third magnetic layers, and a pair of external electrodes. The first magnetic layer includes three or more magnetic alloy particles arranged in the thickness direction and an oxide film binding the magnetic alloy particles together and containing Cr. The three or more magnetic alloy particles have an average particle diameter of 4 ?m or smaller. The internal conductor includes a plurality of conductive patterned portions electrically connected to each other via the first magnetic layer. The second magnetic layers are composed of magnetic alloy particles and disposed around the conductive patterned portions. The third magnetic layers are composed of magnetic alloy particles and disposed so as to be opposed to each other in thickness direction.

Abstract: A magnetic material includes a soft magnetic metal grain containing Fe, and a multilayer oxide film covering the surfaces of the soft magnetic metal grain. The multilayer oxide film has a first oxide layer of crystalline nature containing Fe, and a second oxide layer of amorphous nature containing Si. In an embodiment, the silicon oxide film of amorphous nature is formed by dripping, divided into multiple sessions, a treatment solution containing TEOS (tetraethoxy silane), ethanol, and water into a mixed solution containing the soft magnetic metal grain, ethanol, and ammonia water, to mix the solutions.

Abstract: One object is to provide a laminated inductor having a reduced thickness without reduction in the magnetic characteristic and the insulation quality. The laminated inductor includes a first magnetic layer, an internal conductor, second magnetic layers, third magnetic layers, and a pair of external electrodes. The first magnetic layer includes three or more magnetic alloy particles arranged in the thickness direction and an oxide film binding the magnetic alloy particles together and containing Cr. The three or more magnetic alloy particles have an average particle diameter of 4 ?m or smaller. The internal conductor includes a plurality of conductive patterned portions electrically connected to each other via the first magnetic layer. The second magnetic layers are composed of magnetic alloy particles and disposed around the conductive patterned portions. The third magnetic layers are composed of magnetic alloy particles and disposed so as to be opposed to each other in thickness direction.

Abstract: One object is to provide a laminated inductor having a reduced thickness without reduction in the magnetic characteristic and the insulation quality. The laminated inductor includes a first magnetic layer, an internal conductor, second magnetic layers, third magnetic layers, and a pair of external electrodes. The first magnetic layer includes three or more magnetic alloy particles arranged in the thickness direction and an oxide film binding the magnetic alloy particles together and containing Cr. The three or more magnetic alloy particles have an average particle diameter of 4 ?m or smaller. The internal conductor includes a plurality of conductive patterned portions electrically connected to each other via the first magnetic layer. The second magnetic layers are composed of magnetic alloy particles and disposed around the conductive patterned portions. The third magnetic layers are composed of magnetic alloy particles and disposed so as to be opposed to each other in thickness direction.

Abstract: One object is to provide a laminated inductor having a reduced thickness without reduction in the magnetic characteristic and the insulation quality. The laminated inductor includes a first magnetic layer, an internal conductor, second magnetic layers, third magnetic layers, and a pair of external electrodes. The first magnetic layer includes three or more magnetic alloy particles arranged in the thickness direction and an oxide film binding the magnetic alloy particles together and containing Cr. The three or more magnetic alloy particles have an average particle diameter of 4 ?m or smaller. The internal conductor includes a plurality of conductive patterned portions electrically connected to each other via the first magnetic layer. The second magnetic layers are composed of magnetic alloy particles and disposed around the conductive patterned portions. The third magnetic layers are composed of magnetic alloy particles and disposed so as to be opposed to each other in thickness direction.

Abstract: One object is to provide a laminated inductor having a reduced thickness without reduction in the magnetic characteristic and the insulation quality. The laminated inductor includes a first magnetic layer, an internal conductor, second magnetic layers, third magnetic layers, and a pair of external electrodes. The first magnetic layer has a thickness of 4 to 19 ?m, and includes three or more magnetic alloy particles arranged in the thickness direction and an oxide film binding the magnetic alloy particles together and containing Cr. The internal conductor includes a plurality of conductive patterned portions electrically connected to each other via the first magnetic layer. The second magnetic layers are composed of magnetic alloy particles and disposed around the conductive patterned portions. The third magnetic layers are composed of magnetic alloy particles and disposed so as to be opposed to each other in thickness direction.

Abstract: A magnetic material has: multiple soft magnetic alloy grains that contain Fe, element L (where element L is Si, Zr, or Ti), and element M (where element M is not Si, Zr, or Ti, and oxidizes more easily than Fe); a first oxide film that contains element L and covers each of the multiple soft magnetic alloy grains; a second oxide film that contains element M and covers the first oxide film; a third oxide film that contains element L and covers the second oxide film; a fourth oxide film that contains Fe and covers the third oxide film; and bonds that are constituted by parts of the fourth oxide film and that bond the multiple soft magnetic alloy grains together.

Abstract: A coil component that can be made thinner while ensuring sufficient magnetic characteristics includes a magnetic part, a conductor part, and multiple insulator parts. The magnetic part is constituted by magnetic alloy grains. The conductor part has multiple winding parts and is wound around one axis inside the magnetic part. The multiple insulator parts are each placed between the multiple winding parts, each having a winding shape that includes two joining surfaces that are respectively joined to two winding parts facing each other at least partially in the direction of the one axis, and are each constituted by electrically insulating grains.

Abstract: A coil component has a magnetic body of rectangular solid shape, a coil with N turns (N is a positive number of 2 or greater) provided inside the magnetic body, an insulating intermediate part, and external electrodes. The coil has a first conductor layer, a second conductor layer, and an inter-layer connection part. The first conductor layer has a first multiple winding part which is wound around one axis with a first spacing. The second conductor layer has a second multiple winding part which is wound around the one axis with the first spacing and faces the first conductor layer. The insulating intermediate part is provided inside the magnetic body and forms, between the first conductor layer and second conductor layer, a second spacing corresponding to a thickness equal to or less than the product of the first spacing and (N?1).

Abstract: One object is to provide a laminated inductor having a reduced thickness without reduction in the magnetic characteristic and the insulation quality. The laminated inductor includes a first magnetic layer, an internal conductor, second magnetic layers, third magnetic layers, and a pair of external electrodes. The first magnetic layer has a thickness of 4 to 19 ?m, and includes three or more magnetic alloy particles arranged in the thickness direction and an oxide film binding the magnetic alloy particles together and containing Cr. The internal conductor includes a plurality of conductive patterned portions electrically connected to each other via the first magnetic layer. The second magnetic layers are composed of magnetic alloy particles and disposed around the conductive patterned portions. The third magnetic layers are composed of magnetic alloy particles and disposed so as to be opposed to each other in thickness direction.

Abstract: In an embodiment, a magnetic body includes soft magnetic alloy grains 11 containing Fe, element L, and element M (where element L is Si or Zr and element M is a metal element other than Si or Zr that oxidizes more easily than Fe), as well as oxide film produced from oxidization of part of these grains 11; wherein at least some of the bonds between adjacent soft magnetic alloy grains 11 are by way of the oxide film; the oxide film has an inner film 12a, and an outer film 12b positioned on the outer side of the inner film 12a; and the inner film 12a contains more of element L than element M, while the outer film 12b contains more of element M than element L.

Abstract: In an embodiment, a coil component includes a magnetic body, and an internal conductor 21 having a center axis and formed in a spiral shape; wherein the internal conductor 21 is embedded in the magnetic body; in a cross sectional view of a plane that includes the center axis extending in the vertical direction, wherein a conductor region part 11 positioned between the adjacent windings of the spiral shape has a higher oxygen content than that of a core part 12 including the center axis and positioned on the inner side of the windings of the spiral shape. the magnetic body is constituted by iron-based soft magnetic grains and oxide film of at least one type of element that oxidizes more easily than iron, which oxide film bonds at least partly the iron-based soft magnetic grains.

Abstract: A multilayer ceramic capacitor uses internal electrodes which are embedded between the dielectric layers and whose primary constituent is Cu, wherein when the composition of the dielectric layer is expressed by 100CaxZrO3+aMnO2+bLiO1/2+cBO3/2+dSiO2+eAlO3/2, the contents of the respective constituents are 1.5?a?4.5 mol, 0.8?b/(c+d)?2.0, 0.9?d/c?1.5, and 0?e?0.3 mol relative to 100 mol of CaxZrO3 (where 1.005?x?1.06), and when 10?(b+c+d)?14.9, an upper limit of x is defined by a line passing through (10, 1.03) and (14.9, 1.06), and a lower limit of x is defined by a line passing through (10, 1.005) and (14.9, 1.02), wherein the coordinates indicate ((b+c+d), x).

Abstract: A dielectric ceramic composition is represented by BaTiO3+aRe2O3+bMnO+cV2O5+dMoO3+eCuO+fB2O3+gLi2O+xSrO+yCaO (wherein Re represents one or more elements selected from among Eu, Gd, Dy, Ho, Er, Yb, and Y; and a-h each represents the mole number of each component with respect to 100 mol of the main component that is composed of BaTiO3). When the molar ratio of (Ba+Sr+Ca)/Ti contained in the dielectric ceramic composition is represented by m, the 0.10?a?0.50, 0.20?b?0.80, 0?c?0.12, 0?d?0.07, 0.04?c+d?0.12, 0?e?1.00, 0.50?f?2.00, 0.6?(100(m?1)+2g)/2f?1.3, and 0.5?100(m?1)/2g?5.1 are satisfied.

Abstract: A laminated ceramic capacitor includes multiple dielectric layers, internal electrodes having Cu as the primary component and embedded between the dielectric layers, and external electrodes. The dielectric layers contain a primary component comprised of a CaZrO3 compound and auxiliary components that include Mn, B, Si, and Li wherein a primary phase comprised of the primary component, segregation phases containing Ca and at least one of the auxiliary components, and secondary phases containing at last Ca and Zr are formed. The ratio of Ca to Zr in the secondary phases is smaller than the ratio of Ca to Zr in the primary phase, and the number of secondary phases with a diameter of 100 nm or greater in a cross section of the dielectric layers averages 30 or less per 10 square ?m.

Abstract: A laminated ceramic capacitor has multiple layered dielectric ceramic layers of a dielectric ceramic constituted by primary phase grains whose primary component is BaTiO3, secondary phase grains containing at least Re (Re represents at least one of Eu, Gd, Dy, Ho, Er, Yb, and Y), Ba, and Ti, and grain boundary phase containing at least one of B and Li or both; and internal electrodes which are made of Cu or Cu alloy. When a thickness of the dielectric ceramic layer is given by t, and when grain sizes at cumulative 20%, cumulative 50%, and cumulative 95% points of a cumulative count distribution of the primary phase grains are given by D20, D50, and D95, respectively, D20?D50×70%, D50?t/4, D95?t/2, and CV value ((standard deviation between D20 and D95)/D50)<40% are satisfied.

Abstract: A laminated ceramic capacitor has multiple layered dielectric ceramic layers of a dielectric ceramic constituted by primary phase grains whose primary component is BaTiO3, secondary phase grains containing at least Re (Re represents at least one of Eu, Gd, Dy, Ho, Er, Yb, and Y), Ba, and Ti, and grain boundary phase containing at least one of B and Li or both; and internal electrodes which are made of Cu or Cu alloy. When a thickness of the dielectric ceramic layer is given by t, and when grain sizes at cumulative 20%, cumulative 50%, and cumulative 95% points of a cumulative count distribution of the primary phase grains are given by D20, D50, and D95, respectively, D20?D50×70%, D50?t/4, D95?t/2, and CV value ((standard deviation between D20 and D95)/D50)<40% are satisfied.