A soft magnetic alloy powder contains Fe, Si, and at least one of Cr and Al, as constituent elements, wherein, on the surface of each grain constituting the alloy powder, an oxide film is provided which is such that: it contains Si, as well as at least one of Cr and Al, as constituent elements; these elements are contained at higher percentages by mass than those in the alloy part inside the grain; and the content of Si, expressed in percentage by mass, is higher than the total content of Cr and Al. The soft magnetic metal powder can achieve a higher filling rate.

A module includes a circuit board and an inductor. The circuit board has a facing surface and a rear surface which are located at opposite sides to each other in an up-down direction. The inductor has a magnetic core and a coil. The magnetic core is made of a soft magnetic metal material. The magnetic core has a facing surface and a radiating surface which are located at opposite sides to each other in the up-down direction. The facing surface of the magnetic core is arranged to face the facing surface of the circuit board in the up-down direction. The radiating surface of the magnetic core is arranged to be radiatable heat outward. The coil has a coil portion and a connection end. The coil portion winds, at least in part, the magnetic core. The connection end is connected to the facing surface of the circuit board.

An embodiment provides a magnetic core comprising a first powder and a second powder, wherein the hardness of the first powder is lower than that of the second powder, and the volume of the first powder is 40% to 60% with respect to the combined volume of the first powder and the second powder.

A bar-shaped stainless steel product contains, by mass %, 0.001 to 0.030% of C, 0.01 to 4.00% of Si, 0.01 to 2.00% of Mn, 0.01 to 4.00% of Ni, 6.0 to 35.0% of Cr, 0.01 to 5.00% of Mo, 0.01 to 2.00% of Cu, and 0.001 to 0.050% of N. In the product, an F value is 20 or less, a rolling-direction-crystal-orientation RD//<100> fraction is 0.05 or more, and preferably a rolling-direction-crystal-orientation RD//<334> fraction is 0.2 or less. The above RD//<100> fraction means an area ratio of crystal having 25 degrees or less of an orientation difference between a <100> orientation and a rolling direction, and the above RD//<334> fraction means an area ratio of crystal having 10 degrees or less of an orientation difference between a <334> orientation and a rolling direction. F value=700C+800N+20Ni+10Cu+10Mn−6.2Cr−9.2Si−9.3Mo−74.4Ti−37.2A1−3.1Nb+63.2

Grain-oriented electrical steel sheet excellent in magnetic properties and excellent in adhesion of a primary coating to a base steel sheet, an annealing separator utilized for manufacture of grain-oriented electrical steel sheet, and a method for manufacturing grain-oriented electrical steel sheet are proposed. The grain-oriented electrical steel sheet is provided with a base metal steel sheet containing comprising a predetermined chemical composition and a primary coating formed on a surface of the base steel sheet and comprising Mg.sub.2SiO.sub.4 as a main constituent. The primary coating satisfies the conditions of (1) the number density D3 of the Al concentrated region: 0.020 to 0.180/μm.sup.2, (2) (total area S5 of regions which is anchoring oxide layer regions and is also Al concentrated regions)/(total area S3 of Al concentrated regions)≥33%, (3) distance H5 of mean value of length in thickness direction of regions which is anchoring oxide layer regions and is also Al concentrated regions minus H0: 0.4 to 4.0 μm, (4) (total area S1 of anchoring oxide layer regions)/(observed area S0)≥15%.

A coil component includes a base body, a coil conductor disposed in or on the base body, a first external electrode electrically connected to the coil conductor, and a second external electrode electrically connected to the coil conductor. The base body includes a first metal magnetic particle group and a second metal magnetic particle group. The first metal magnetic particle group is composed of plural first metal magnetic particles each including Fe, and the second metal magnetic particle group is composed of plural second metal magnetic particles each including Fe. The first metal magnetic particle group has a first average particle size and a first degree of circularity of 0.75 or higher. The second metal magnetic particle group has a second average particle size smaller than the first average particle size and a second average degree of circularity larger than the first average degree of circularity.

A coil-type electronic component comprises an element including a magnetic element body and a coil conductor. A portion of the magnetic element body in between layers of the coil conductor adjacent to each other in an axis direction of the coil conductor includes first soft magnetic metal particles. A portion of the magnetic element body on an outer side along the axis includes second soft magnetic metal particles. The first soft magnetic metal particles have a saturation magnetization (Ms) higher than that of the second soft magnetic metal particles.

A coil component comprises a coil conductor including a circling portion extending around a coil axis, a base body covering the circling portion, a first external electrode, and a second external electrode. The base body has a first surface intersecting the coil axis, a second surface opposite to the first surface, and an outer surface including a connecting surface connecting the first surface with the second surface. The outer surface of the base body includes a main body portion and at least one high resistance portion. The high resistance portion occupies an area of the connecting surface between the first external electrode and the second external electrode, other than the part occupied by the main body portion. The area extends along an entire length of a circumference of the base body around the coil axis. The high resistance portion has a higher volume resistivity than the main body portion.

A composite particle includes a large particle and binder particles. The large particle has a particle size of 10 μm to 50 μm. The binder particles are attached on the large particle and each have a particle size smaller than that of the large particle.

A multicomponent FeCoSiM soft magnetic alloy is provided. M of the alloy is one or more of V, Cr and Ni. A sum of atomic percentages of alloy elements in the alloy is 100%. The atomic percents of the alloy elements meet the following conditions: Fe, 68˜78 at %; Co, 4˜12 at %; Si, 14˜18 at %; V, 0˜4 at %; Cr, 0˜4 at %; and Ni, 0˜4 at %. The preparation method of the alloy includes weighing raw materials according to the atomic percentages of the alloy elements and then performing melting and annealing heat treatment each in vacuum or a protective atmosphere. The alloy is obtained by a reasonable design of compositions and contents. A magnetocrystalline anisotropy constant of the alloy is low, a magnetostrictive coefficient of the alloy approaches zero and the alloy has characteristics of high saturation flux density and low coercivity.