Samsung Electro-mechanics Co., Ltd.

Sang Kyun Kwon

Han Wool Ryu

Young Il Lee

Jong Ho Chung

Chang Hak Choi

Jong Suk Jeong

Chang Ryul Jung

Chul Min Sim

Seong Jae Lee

Byeong Cheol Moon

Jung Young Cho

Chui Min Sim

An Fe-based nanocrystalline alloy is represented by a Compositional Formula, FeBSiMA, 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, α, and β (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.

Fe-based nanocrystalline alloy and electronic component using the same

An Fe-based nanocrystalline alloy is represented by Composition Formula, (FeMa)MBPCuM, where Mis at least one element selected from the group consisting of Co and Ni, Mis at least one element selected from the group consisting of Nb, Mo, Zr, Ta, W, Hf, Ti, V, Cr, and Mn, Mis at least two elements selected from the group consisting of C, Si, Al, Ga, and Ge but necessarily includes C, and 0≤a≤0.5, 1.5<b≤3, 10≤c≤13, 0<d≤4, 0<e≤1.5, and 8.5≤g≤12.

A coil electronic component includes a body including an insulator; a coil portion embedded in the body; aggregates dispersed in the insulator, where the aggregates each comprise a plurality of magnetic particles, coating layers formed on surfaces of the aggregates using an insulating material, and external electrodes connected to the coil portion.

Coil electronic component

A coil component includes a body having a coil portion embedded therein; and external electrodes connected to the coil portion, wherein the body includes a plurality of magnetic metal particles, and a plurality of indentations are formed in surfaces of at least some of the plurality of magnetic metal particles, and the surfaces of the magnetic metal particles connecting the plurality of indentations to each other are spherical.

Coil component

A coil component includes a body in which a coil portion is disposed, and external electrodes connected to the coil portion. The body includes metal particles formed of an Fe-based nanocrystal grain alloy, and the Fe-based nanocrystal grain alloy has one peak or two peaks in a differential scanning calorimetry (DSC) graph, and when the Fe-based nanocrystal grain alloy has the two peaks, a primary peak is smaller than a secondary peak, where the primary peak is at a lower temperature than the secondary peak.

A coil electronic component includes a body having a coil portion embedded therein, and external electrodes connected to the coil portion, wherein the body includes a plurality of magnetic portions having a form in which magnetic particles are dispersed in an insulator and one or more insulating portions disposed between the plurality of magnetic portions.

An Fe-based nanocrystalline alloy is represented by Composition Formula, (FeM)MBPCuM, where Mis at least one element selected from Co and Ni, Mis at least one element selected from the group consisting of Nb, Mo, Zr, Ta, W, Hf, Ti, V, Cr, and Mn, Mis at least one element selected from the group consisting of C, Si, Al, Ga, and Ge, and 0&#x2264;a&#x2264;0.5, 2&#x2264;b&#x2264;3, 9&#x2264;c&#x2264;11, 1&#x2264;d&#x2264;2, 0.6&#x2264;e&#x2264;1.5, and 9&#x2264;g&#x2264;11.

An inductor includes a body including a coil and an encapsulant and an external electrode on an outer surface of the body. The encapsulant includes a first core surrounding the coil and a second core surrounding the first core. The first core includes a magnetic powder having high current characteristics, and the second core includes a magnetic powder having high capacity characteristics.

Inductor

A coil electronic component includes a body having a coil portion embedded therein and having a form in which magnetic particles are dispersed in a first insulating material, a first atomic layer deposition (ALD) layer formed along a surface of the coil portion using a second insulating material, a second ALD layer formed along a surface of the first ALD layer using a third insulating material, and external electrodes connected to the coil portion.

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%.

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Suwon-si, South Korea

Sang Kyun Kwon