Abstract: 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%.

Abstract: An Fe-based nanocrystalline alloy is represented by a Compositional Formula, FexBySizM?A?, wherein M is one or more elements selected from the group consisting of Nb, V, W, Ta, Zr, Hf, Ti, and Mo; A is one or more elements selected from the group consisting of Cu and Au, x, y, z, ?, and ? (based on atom %) satisfy the following conditions: 75%?x?81%, 7%?y?13%, and 4%?z?12%, and a peak in a differential scanning calorimetry (DSC) graph has a bimodal shape.

Abstract: The present invention relates to a device for wireless communication and a method for wireless communication. The device for wireless communication, which consists of a front surface having a display unit for displaying a screen thereon, a back surface opposite to the front surface, and a plurality of side surfaces except the front surface and the back surface, includes: a plurality of antennas provided on one surface selected from the plurality of side surfaces; and a near field communication (NFC) module connected to at least one of the plurality of antennas to transceive data and improves the degree of freedom in designing the device for wireless communication while increasing a read range and a read rate of near field communication.

Abstract: Disclosed herein are a soft magnetic composite including an insulating layer formed along an inter-particle boundary of a soft magnetic core metal powder, a method for preparing the same, and electronic components including the same as a core material. The soft magnetic composite according to the present invention may include the insulating layer formed along the inter-particle boundary of the soft magnetic core metal particles, such that damage to a coating film caused by a molding of the existing soft magnetic powder having the insulation coating film formed therein may be prevented, whereby an eddy current loss may be minimized.

Abstract: Disclosed herein are a soft magnetic metal powder having a pearlite lamellar structure in which ferrite structures and cementite structures are repeated, a method for preparing the same, and an electronic component including the same as a core material. According to the present invention, the soft magnetic metal powder having the pearlite lamellar structure in which the ferrite structures and the cementite structures are repeated may be easily prepared, and an eddy current loss may be easily decreased without changing the existing molding process, such that the soft magnetic metal powder may be used as a core material of various electronic components such as an inductor, a motor, an actuator, a sensor, a transformer, and a reactor, requiring soft magnetic properties.

Abstract: Provided are a magnetic sheet for use in a radio frequency identification (RFID) antenna, an RFID antenna including the magnetic sheet, and a method of manufacturing the magnetic sheet, in which the magnetic sheet includes an amorphous alloy selected from the group consisting of Fe—Si—B, Fe—Si—B—Cu—Nb, Fe—Zr—B and Co—Fe—Si—B. The magnetic sheet is made by laminating amorphous alloy ribbons made of an amorphous alloy between magnetic sheet layers formed of alloy powder including at least one amorphous alloy and then compression-molding the amorphous alloy ribbons, to thereby control microcrack of the amorphous alloy ribbons and enhance characteristic of an end-product. The magnetic sheet is also thin, and has an excellent magnetic permeability, and a simple manufacturing process.

Abstract: A flake powder for an electromagnetic wave absorber and a method of manufacturing the flake powder are described. The flake powder is made-up of nano-sized metals and pores forming a flake body having a composite structure formed by aggregation of nano-sized magnetic metals. The method includes the steps of preparing a metal oxide; milling the metal oxide into nano-sized powder; reducing the milled metal oxide powder to form a magnetic metal powder; flaking the reduced magnetic metal powder; and heat treating the flaked magnetic metal powder to relieve residual stress thereof.

Abstract: Provided are a magnetic sheet for use in a radio frequency identification (RFID) antenna, an RFID antenna including the magnetic sheet, and a method of manufacturing the magnetic sheet, in which the magnetic sheet includes an amorphous alloy selected from the group consisting of Fe—Si—B, Fe—Si—B—Cu—Nb, Fe—Zr—B and Co—Fe—Si—B. The magnetic sheet is made by laminating amorphous alloy ribbons made of an amorphous alloy between magnetic sheet layers formed of alloy powder including at least one amorphous alloy and then compression-molding the amorphous alloy ribbons, to thereby control microcrack of the amorphous alloy ribbons and enhance characteristic of an end-product. The magnetic sheet is also thin, and has an excellent magnetic permeability, and a simple manufacturing process.