Samsung Electro-mechanics Co., Ltd.

Min Sung Song

Sung Hyung Kang

Du Won Choi

Jong Hyun Cho

Chang Hoon Kim

Il Ho An

Byoung Hwa Lee

Jae Sung Park

Ki Yong Lee

Sang Hoon Kwon

Chan Hee Nam

Jae Hun Choe

Byung Kil Yun

Min Hoe Kim

Yo Han Seo

Jung Wun Hwang

A ceramic electronic component includes a body, including a dielectric layer and an internal electrode. The dielectric layer includes a plurality of dielectric grains, and at least one of the plurality of dielectric grains has a core-dual shell structure having a core and a dual shell. The dual shell includes a first shell, surrounding at least a portion of the core, and a second shell, surrounding at least a portion of the first shell. The dual shell includes different types of rare earth elements R1 and R2, and R2/R1is 0.01 or less and R2/R1is 0.5 to 3.0, where R1and R1denote concentrations of R1 included in the first shell and the second shell, respectively, and R2and R2denote concentrations of R2 included in the first shell and the second shell, respectively.

Ceramic electronic component comprising dielectric grains having a core-dual shell structure and method of manufacturing the same

A multilayer capacitor includes a body having a plurality of dielectric layers and first and second internal electrodes alternately disposed with the dielectric layers interposed therebetween, and further including an active region in which the first and second internal electrodes overlap each other, and upper and lower covers disposed above and below the active region, respectively; and first and second external electrodes disposed on the body to be connected to the first and second internal electrodes, respectively, wherein the upper and lower covers include barium titanate (BT, BaTiO) and Yttria-stabilized zirconia (YSZ).

Multilayer capacitor and board having the same mounted thereon

A dielectric ceramic composition includes: a base material powder BaTiO(0.995&#x2266;m&#x2266;1.010); 0.2 to 2.0 moles of a first accessory ingredient, an oxide or carbide containing at least one of Ba and Ca, based on 100 moles of the base material powder; a second accessory ingredient, an oxide containing Si or a glass compound containing Si; 0.2 to 1.5 moles of a third accessory ingredient, an oxide containing at least one of Sc, Y, La, Ac, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu, based on 100 moles of the base material powder; and 0.05 to 0.80 mole of a fourth accessory ingredient, an oxide containing at least one of Cr, Mo, W, Mn, Fe, Co, and Ni, based on 100 moles of the base material powder, a content ratio of the first accessory ingredient to the second accessory ingredient being 0.5 to 1.7.

Dielectric ceramic composition and multilayer ceramic capacitor including the same

A dielectric ceramic composition including a base material represented by (Ba+RE)mTiO(here, 0.995&#x2266;m&#x2266;1.010, 0.001&#x3c;x&#x3c;0.010, and RE is at least one rare earth (RE) atom selected from a group consisting of Dy, Y, Ho, Sm, and Gd) or Ba(Ti+RE)O(here, 0.995&#x2266;m&#x2266;1.010, 0.001&#x3c;x&#x3c;0.010, and RE is at least one RE atom selected from a group consisting of Dy, Y, Ho, Sm, and Gd) as a main component, and a multi-layer ceramic capacitor using the same. In the dielectric ceramic composition, high permittivity (dielectric constant of 1800 or more) and high temperature reliability may be secured by using a RE atom doped/solid-solubilized base material and adding oxides, which are sub-components.

Dielectric ceramic composition and multi-layer ceramic capacitor comprising the same

There is provided a dielectric composition, including; a base powder including BaTiO(0.995&#x2266;m&#x2266;1.010); a first sub-component including 0.05 to 4.00 moles of an oxide or carbonate containing at least one rare-earth element based on 100 moles of the base powder; a second sub-component including 0.05 to 0.70 moles of an oxide or carbonate containing at least one transition metal; a third sub-component including 0.20 to 2.00 moles of a Si oxide; a fourth sub-component including 0.02 to 1.00 mole of an Al oxide; and a fifth sub-component including 20 to 140% of an oxide containing at least one of Ba and Ca, based on the third sub-component.

Dielectric composition and ceramic electronic component including the same

There is provided a dielectric composition, including: a basic powder including BaTiO(0.995&#x2266;m&#x2266;1.010); a first subcomponent including 0.1 to 0.6 mole of zirconium (Zr) oxide or carbide, based on 100 moles of the basic powder; a second subcomponent including 0.8 to 6.0 moles of oxide or carbide including at least one of magnesium (Mg), strontium (Sr), and barium (Ba); a third subcomponent including 0.2 to 1.8 moles of oxide including at least one rare earth element; a fourth subcomponent including 0.05 to 0.30 mole of oxide including at least one transition metal; a fifth subcomponent including 0.05 to 0.35 mole of oxide including at least one of vanadium (V), niobium (Nb), and tantalum (Ta); and a sixth subcomponent including 0.5 to 4.0 moles of oxide including at least one of silicon (Si) and aluminum (Al).

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Gyunggi-do, South Korea

Min Sung Song