A magnetic material and an inductor capable of attaining both higher magnetic permeability and improved DC superposition characteristics. A composite magnetic material contains metal magnetic particles, in which the metal magnetic particles include first particles having a median diameter D.sub.50 of 1.3 m or more and 5.0 m or less (i.e., from 1.3 m to 5.0 m), and second particles having a median diameter D.sub.50 larger than the first particles. The first and second particles each include a core portion made of a metal magnetic material, and an insulating film provided on a surface of the core portion. The insulating film of the second particles has an average thickness of 40 nm or more and 100 nm or less (i.e., from 40 nm to 100 nm). The insulating film of the first particles has an average thickness smaller than that of the insulating film of the second particles.

A plurality of flaky magnetic metal particles of embodiments is a plurality of flaky magnetic metal particles having an average thickness of from 10 nm to 100 m, each of the flaky magnetic metal particles having a flat surface; a magnetic metal phase containing at least one first element selected from the group consisting of Fe, Co, and Ni; and the difference in coercivity on the basis of direction within the flat surface, the average value of the ratio of the average length within the flat surface with respect to the thickness being from 5 to 10,000, and the flaky magnetic metal particles including a flaky magnetic metal particle having either a crack in the direction of the thickness of the flaky magnetic metal particle, the crack having a depth equivalent to 10% or more of the thickness of the flaky magnetic metal particle and a width shorter than the depth, or a crack in a direction parallel to the flat surface, the crack having a length equivalent to 10% or more of the thickness of the flaky magnetic metal particle and a width shorter than the length, or the flaky magnetic metal particle having both of the cracks.

A method for manufacturing a powder magnetic core according to an aspect includes filling a case with a soft magnetic powder obtained by pulverizing a soft magnetic foil having an amorphous structure or a nanocrystal structure, applying at least one of a vibration and a magnetic field to the soft magnetic powder contained in the case and thereby aligning the soft magnetic powder, and injecting a curable resin into the case, impregnating the aligned soft magnetic powder with the curable resin, and then curing the curable resin while deaerating the curable resin under a reduced pressure.

A coil component having high inductance while suppressing core loss is obtained. The coil component includes a coil and a magnetic core. The magnetic core has a laminated body in which soft magnetic layers are laminated. The volume occupation of a magnetic material in the laminated body is 50% or more and 99.5% or less. A structure consisting of Fe-based nanocrystals is observed in the soft magnetic layers.

A coil component having high inductance while suppressing core loss is obtained. The coil component includes a coil and a magnetic core. The magnetic core has a laminated body in which soft magnetic layers are laminated. The thickness of each of the soft magnetic layers is 10 m or more and 30 m or less. A structure made of Fe-based nano-crystals is observed in the soft magnetic layers.

A coil component is constituted by a composite magnetic material containing alloy grains whose oxygen atom concentration in their surfaces is 50 percent or less, and resin, and also by a coil. The alloy grains are comprised of first alloy grains and second alloy grains which have different compositions and different average grain sizes. The coil component using the composite magnetic material does not require high pressure when formed.

A coil component includes a body having a coil part embedded therein, and an external electrode connected to the coil part. The body contains a plurality of first magnetic particles and a plurality of second magnetic particles, the second magnetic particles being smaller than the first magnetic particles, and the pluralities of first and second magnetic particles are dispersed in a main insulating portion. The plurality of second magnetic particles are dispersed in each of a plurality of sub-insulating portions to constitute composites, and a volume percentage of the second magnetic particles in the composites is 80% to 90%.

A magnetic shielding sheet is provided. The magnetic shielding sheet according to an embodiment of the present invention comprises: a plate-shaped magnetic sheet made of a magnetic material containing a metal component; and a cover member for covering the entire surface of the magnetic sheet so as to prevent the surface of the magnetic sheet from being exposed to the outside.

A coil component includes a body having one surface and the other surface facing each other, and a plurality of wall surfaces connecting the one surface and the other surface, and having a distance from the one surface to the other surface of 0.65 mm or less (excluding 0 mm); and a coil portion embedded in the body, wherein the body comprises an FeSiBNbCu-based metal magnetic powder particle represented by the following chemical formula 1, wherein the FeSiBNbCu-based metal magnetic powder particle comprises a crystal grain of 20 nm or less (excluding 0 mm),

Fe.sub.aSi.sub.bB.sub.cNb.sub.dCu.sub.e[Chemical Formula 1] (where 73 atom %a77 atom %, 10 atom %b14 atom %, 9 atom%c11 atom %, 2 atom %d3 atom %, 0.5 atom %e1 atom %, and a+b+c+d+e=100).

A coil component includes a body including magnetic metal powder particles and an insulating resin; a coil portion embedded in the body; and first and second external electrodes respectively disposed on the body to be spaced apart from each other and respectively connected to both end portions of the coil portion. A magnetic metal powder particle exposed from a surface of the body, among the magnetic metal powder particles, has a plating prevention film formed on at least a portion of a surface thereof and containing metal ions of the exposed magnetic metal powder particle.