An electrode structure on a circuit board, the electrode structure comprising a metal structure disposed on and electrically connected to the circuit board, wherein the metal structure and a surface of the circuit board forms a space therebetween, wherein at least one first electrical component is disposed in the space and an outer surface of the metal structure forms an electrode for electrically connecting with an external component.

Provided is soft magnetic powder used to manufacture a dust core having good mechanical strength and superior formability while iron loss is reduced. The soft magnetic powder for dust cores according to the invention is soft magnetic mixed powder that includes pure iron powder and soft magnetic iron-base alloy powder, wherein the proportion of the soft magnetic iron-base alloy powder in the mixture is 5 to 60 mass %, the ratio of the modes of the particle size distributions of the soft magnetic iron-base alloy powder and the pure iron powder ((the mode of the particle size distribution of the soft magnetic iron-base alloy powder)/(the mode of the particle size distribution of the pure iron powder)) is 0.9 or more and less than 5, and the ratio R.sub.over/R.sub.under is 1.2 or more, where R.sub.over is the mass proportion of soft magnetic iron-base alloy powder in mixed powder with a particle size of D50 or more based on the mass fraction, and R.sub.under is the mass proportion of soft magnetic iron-base alloy powder in mixed powder with a particle size of less than D50 based on the mass fraction.

Provided is soft magnetic powder used to manufacture a dust core having good mechanical strength and superior formability while iron loss is reduced. The soft magnetic powder for dust cores according to the invention is soft magnetic mixed powder that includes pure iron powder and soft magnetic iron-base alloy powder, wherein the proportion of the soft magnetic iron-base alloy powder in the mixture is 5 to 60 mass %, the ratio of the modes of the particle size distributions of the soft magnetic iron-base alloy powder and the pure iron powder ((the mode of the particle size distribution of the soft magnetic iron-base alloy powder)/(the mode of the particle size distribution of the pure iron powder)) is 0.9 or more and less than 5, and the ratio R.sub.over/R.sub.under is 1.2 or more, where R.sub.over is the mass proportion of soft magnetic iron-base alloy powder in mixed powder with a particle size of D50 or more based on the mass fraction, and R.sub.under is the mass proportion of soft magnetic iron-base alloy powder in mixed powder with a particle size of less than D50 based on the mass fraction.

A magnetic powder is represented by general formula Fe.sub.a(Si.sub.bB.sub.cP.sub.d).sub.100-a, and is produced with a gas atomization method. When the value of a and the value of b in the general formula is represented (a, b), (a, b) is within a predetermined region V1. Similarly, (a, c) and (a, d) are within a predetermined region, respectively. Whereby, it is possible to obtain an alloy magnetic powder which has high saturation magnetic flux density, low magnetic loss, and is spherical and easy to handle; and a magnetic core, a variety of coil components, and a motor can be realized by using the magnetic material.

A magnetic powder is represented by general formula Fe.sub.aSi.sub.bB.sub.cP.sub.dCu.sub.e. 71.0≦a≦81.0, 0.14≦b/c≦5, 0≦d≦14, 0<e≦1.4, d≦0.8a−50, e<−0.1(a+d)+10, and a+b+c+d+e=100. A crystallinity is not more than 30% in the case of containing an amorphous phase and a compound phase, and is not more than 60% in the case of not containing a compound phase. The magnetic powder is produced with a gas atomization method. Whereby, it is possible to obtain an alloy magnetic material which has high saturation magnetic flux density and low magnetic loss; and a magnetic core, coil components, and a motor can be realized.

A liquid adhesive coating composition that cures into a solid form, used to non-permanently adhere interior floor or wall coverings to substrate floor or wall surfaces respectively, includes a polymer incorporating iron or other paramagnetic, superparamagnetic, ferromagnetic, or ferrimagnetic ingredients, that becomes permanently adhered to the substrate as it cures, and thereafter provides a low-tack adhesive surface that is also magnetically attractive, upon which magnetized floor or wall coverings including certain types of carpet, linoleum, vinyl, wallpaper, and other types of magnetically-backed coverings can be subsequently installed. The combined low-tack adhesive and magnetic adhesion qualities of the cured composition of the invention allow for the magnetically-backed floor or wall coverings to be sufficiently well adhered to the surface of the cured adhesive composition to remain in place during normal usage while retaining the ability for the coverings to be subsequently removed, repositioned or replaced without damaging the respective coverings, adhesive coating composition layer, or substrate.

A liquid adhesive coating composition that cures into a solid form, used to non-permanently adhere interior floor or wall coverings to substrate floor or wall surfaces respectively, includes a polymer incorporating iron or other paramagnetic, superparamagnetic, ferromagnetic, or ferrimagnetic ingredients, that becomes permanently adhered to the substrate as it cures, and thereafter provides a low-tack adhesive surface that is also magnetically attractive, upon which magnetized floor or wall coverings including certain types of carpet, linoleum, vinyl, wallpaper, and other types of magnetically-backed coverings can be subsequently installed. The combined low-tack adhesive and magnetic adhesion qualities of the cured composition of the invention allow for the magnetically-backed floor or wall coverings to be sufficiently well adhered to the surface of the cured adhesive composition to remain in place during normal usage while retaining the ability for the coverings to be subsequently removed, repositioned or replaced without damaging the respective coverings, adhesive coating composition layer, or substrate.

In a rotary electric machine, magnets provided in a core generate circumferentially arranged magnetic poles. Each magnetic pole defines d- and q-axes. The d-axis represents a center of the corresponding magnetic pole. The rotary electric machine includes an armature including an armature winding. Each magnet includes a magnet body having opposing first and second flux effective surfaces. The first flux effective surface is a surface out of which magnetic flux flows. The second flux effective surface into which magnetic flux flows. The magnet body has a thickness defined as a minimum distance between the first and second flux effective surfaces. The magnet body has easy axes of magnetization. A length of a line along at least one of the easy axes of magnetization between the first and second flux effective surfaces is longer than the thickness of the magnet body.

In a rotary electric machine, magnets provided in a core generate circumferentially arranged magnetic poles. Each magnetic pole defines d- and q-axes. The d-axis represents a center of the corresponding magnetic pole. The rotary electric machine includes an armature including an armature winding. Each magnet includes a magnet body having opposing first and second flux effective surfaces. The first flux effective surface is a surface out of which magnetic flux flows. The second flux effective surface into which magnetic flux flows. The magnet body has a thickness defined as a minimum distance between the first and second flux effective surfaces. The magnet body has easy axes of magnetization. A length of a line along at least one of the easy axes of magnetization between the first and second flux effective surfaces is longer than the thickness of the magnet body.

A soft magnetic powder including a core containing a soft magnetic metal material and an insulating film covering the surface of the core. The insulating film contains an insulating metal oxide and an iron component, and the iron component is embedded in the insulating film.