Samsung Electro-mechanics Co., Ltd.

Hee Sun Chun

Jae Sung Park

Hyeg Soon An

Jin Woo Kim

Tae Hyung Kim

Seok Hyun Yoon

Seung In Baik

Hyo Ju Lee

Jeong Wook Seo

Ji Su Hong

Eun Ha Jang

Hui Sun Park

Jong Han Kim

Jeong Ryeol Kim

In Tae Seo

Hong Gi Nam

Hyung Soon Kwon

Hyoung Uk Kim

Jae Choon Cho

Je Hee Lee

Ji Hong Jo

Sung Hyun Kim

Chung Eun Lee

Kyung Sik Kim

Choon Keun Lee

Hyung Joon Jeon

Chung Hee Lee

Jong Yoon Jang

Sea Han Na Doo

Jong Su Park

Ku Tak Lee

A dielectric material includes a main component represented by (BaCa)(Ti(Zr, Sn, Hf))O(0≤x≤1 and 0≤y≤0.5); a first subcomponent including at least one of elements among Y, Dy, Ho, Er, Gd, Ce, Nd, Nb, Sm, Tb, Eu, Tm, La, Lu, and Yb; a second subcomponent including Si and/or Al; and a third subcomponent including Ba and/or Ca.

Dielectric material and multilayer ceramic electronic component including the same

A multilayer electronic component includes a body including a dielectric layer including a plurality of dielectric grains and internal electrodes alternately disposed with the dielectric layer in a first direction and external electrodes disposed on the body, wherein at least one of the plurality of dielectric grains has a core-shell structure including an inner core and a shell covering at least a portion of the core, a ratio of an average size of the core to an average size of the dielectric grains having the core-shell structure is 0.4 or more and 0.8 or less, a ratio ((Dy+Tb)/Sn) of the sum of the moles of dysprosium (Dy) and the moles of terbium (Tb) to the moles of tin (Sn) included in the dielectric layer satisfies 0.7 or more and 1.5 or less, and at least one of the dielectric layers has four or more dielectric grains in the first direction.

Multilayer electronic component

A multilayer capacitor includes a body including a laminate structure in which at least one first internal electrode and at least one second internal electrode are alternately stacked in a first direction with at least one dielectric layer therebetween, and first and second external electrodes spaced apart on the body, to be connected to at least one first internal electrode and at least one second internal electrode, respectively. The body includes, in a larger molar content, at least one selected from the group consisting of Dy, Tb, Y, Sm, Ho, Gd, Er, Ce, La and Nd in a capacitance formation region including a region between at least one first internal electrode and at least one second internal electrode than in a margin region including a region between a boundary line of at least one first internal electrode and at least one second internal electrode and a surface of the body.

Multilayer capacitor

A dielectric composition includes a BaTiO-based component as a main component, a donor component including a first element and a second element each having a shorter ionic radius and greater atomic weight than Ba, and an acceptor component including at least one of Mg, Al, Mn and V. An ionic radius of the second element is greater than an ionic radius of the first element, a molar content of the second element is less than a molar content of the first element, and a molar content of the acceptor component is greater than a molar content of the donor component.

Dielectric composition and multilayer capacitor comprising the same

A ceramic electronic component includes a body, including a dielectric layer and an internal electrode, and an external electrode disposed on the body and connected to the internal electrode. At least a region of the dielectric layer includes tin (Sn) and a lanthanide rare earth element (RE) including dysprosium (Dy). In the at least a region of the dielectric layer, a molar ratio of tin (Sn) to dysprosium (Dy) is from 0.15 to 0.30.

Ceramic electronic component

A ceramic electronic component includes: a body including an active portion, including a first dielectric layer and an internal electrode, and a margin portion disposed a side surface of the active portion and including a second dielectric layer; and an external electrode disposed on the body and connected to the internal electrode. The first and second dielectric layers have different dielectric compositions. The first dielectric layer includes tin (Sn) and dysprosium (Dy). The second dielectric layer includes magnesium (Mg).

Ceramic electronic component including dielectric layers having different dielectric compositions

A multilayer capacitor includes a body including a plurality of dielectric layers and a plurality of internal electrodes laminated in a first direction, and external electrodes. The body includes an active portion, in which the plurality of internal electrodes are disposed to form capacitance, corresponding to a region between internal electrodes disposed on an outermost side in the first direction, among the plurality of internal electrodes, a cover portion covering the active portion in the first direction, and a side margin portion covering the active portion in a second direction, perpendicular to the first direction, and 1.49<A1/A2<2.50 where A1 is an average grain size of the dielectric layer in a central region of the active portion, and A2 is an average grain size of the dielectric layer in an active-cover boundary portion, adjacent to the cover portion, of the active portion.

A multilayer electronic component includes a body including a plurality of dielectric layers, side margin portions disposed on the body, and external electrodes disposed on the body. The reliability of the multilayer electronic component is improved by controlling the contents of Si for each position of the dielectric layer and the side margin portion.

Multilayer electronic component including side margin portion having composition gradient across thickness thereof

A multilayer ceramic electronic component includes: a ceramic body including a dielectric layer having a main component represented by (BaCa)(Ti(Zr, Sn, Hf))O(where, 0≤x≤1, 0≤y≤0.5), and having a plurality of grains and grain boundaries disposed between the plurality of grains, and including first and second internal electrodes alternately stacked with the dielectric layer interposed therebetween; a first external electrode; and a second external electrode, wherein the dielectric layer includes a triple point in contact with three grain boundaries and a secondary phase of Si disposed inside the triple point, wherein a dispersion of an Si content at an interface between the dielectric layer and the internal electrode may be 1% by weight or less.

Multilayer ceramic electronic component

A ceramic electronic component includes a body including a dielectric layer and internal electrodes; and external electrodes disposed on the body and connected to the internal electrodes. The dielectric layer includes a plurality of grains and a grain boundary disposed between adjacent grains, and GB1/G1 is 5 or more in mass ratio, where G1 is a content of Si of one of the plurality of grains and GB1 is a content of Si of the grain boundary.

A multilayer ceramic electronic component includes: a ceramic body having a capacitance formation portion, and including a dielectric layer and a first internal electrode and a second internal electrode with the dielectric layer interposed therebetween, a first margin portion disposed on the surface of the capacitance formation portion, and a second margin portion disposed on the other surface of the capacitance formation portion; a first external electrode; and a second external electrode. A following formula 1 is satisfied, [formula 1]&#x2212;0.1&#x2264;(Tm&#x2212;Ta)/Ta, where in the formula 1, Tm is an average height of a central region of the margin portion, and Ta is an average height of an outer region of the capacitance formation portion in a second direction.

A multilayer ceramic capacitor includes a ceramic body including first and second surfaces opposing each other, and third and fourth surfaces connecting the first and second surfaces, a plurality of internal electrodes disposed inside the ceramic body, exposed from the first and second surfaces, and having an end exposed from the third surface or the fourth surface, and a first side margin and a second side margin respectively disposed on the first and second surfaces, from which end portions of the plurality of internal electrodes are exposed. The first and second side margins include a base material powder of a barium titanate-based base powder and a subcomponent. The subcomponent includes terbium (Tb) as a first subcomponent including a lanthanide rare earth element, and a content ratio of the terbium (Tb) to a content of the first subcomponent (RE) excluding the terbium (Tb) satisfies 0.110&#x2264;Tb/RE&#x2264;2.333.

Multilayer ceramic capacitor

A multilayer capacitor includes a body including a plurality of dielectric layers and a plurality of internal electrodes laminated in a first direction, and external electrodes. The body includes an active portion, in which the plurality of internal electrodes are disposed to form capacitance, corresponding to a region between internal electrodes disposed on an outermost side in the first direction, among the plurality of internal electrodes, a cover portion covering the active portion in the first direction, and a side margin portion covering the active portion in a second direction, perpendicular to the first direction, and 1.49&#x3c;A1/A2&#x3c;2.50 where A1 is an average grain size of the dielectric layer in a central region of the active portion, and A2 is an average grain size of the dielectric layer in an active-cover boundary portion, adjacent to the cover portion, of the active portion.

A dielectric composition includes: a BaTiO-based main component and a first accessory component, wherein the first accessory component includes dysprosium (Dy) and terbium (Tb), the sum (Dy+Tb) of contents of dysprosium (Dy) and terbium (Tb) is more than 1.5 mol and 2.0 mol or less based on 100 mol of Ti of the main component, and 0.1&#x2264;Tb/Dy&#x3c;0.15 in which Tb/Dy is a ratio of the content of terbium (Tb) to the content of dysprosium (Dy).

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Suwon-si, South Korea

Hee Sun Chun