Multilayered capacitor and manufacturing method thereof
AssigneeSamsung Electro-Mechanics Co., Ltd.
InventorsMyungwoo Lee, Haesol Jung, Wonsik Jeong, Sungsoo Choi, Won Woo Lee, Gunhwan Ryu
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Abstract
A multilayered capacitor includes a capacitor body including a dielectric layer and an internal electrode, and an external electrode outside the capacitor body, wherein the dielectric layer includes a plurality of dielectric crystal grains, the dielectric crystal grains include Bax(Ti1-yZry)O3 as a main component and satisfy 0<y≤0.0018 at a center of the dielectric crystal grains, D50 of the dielectric crystal grains is about 130 nm to about 170 nm, and a coefficient of variation (standard deviation of size/D50) of the dielectric crystal grain size is 35% to 45%.
Claims10
A multilayered capacitor, comprising
- a capacitor body including a dielectric layer and an internal electrode, and
- an external electrode disposed on an outer surface of the capacitor body,
- wherein the dielectric layer includes a plurality of dielectric crystal grains,
- at least one of the plurality of dielectric crystal grains includes Bax(Ti1-yZry)O3 wherein 0.995≤x≤1.010 as a main component and satisfy 0<y≤0.0018 at a center of the dielectric crystal grains,
- D50 of the plurality of dielectric crystal grains is about 130 nm to about 170 nm, and
- a coefficient of variation (standard deviation of size/D50) of the plurality of dielectric crystal grain is 35% to 45%.
A multilayered capacitor, comprising
- a capacitor body including a dielectric layer and an internal electrode, and
- an external electrode disposed on an outer surface of the capacitor body,
- wherein the dielectric layer includes a plurality of dielectric crystal grains,
- at least one of the plurality of dielectric crystal grains includes Bax(Ti1-yZry)O3 as a main component and satisfy 0<y≤0.0018 at a center of the dielectric crystal grains, and
- at least one of the plurality of dielectric crystal grains include about 0.5 parts by mole to about 1.0 part by mole of Dy2O3, about 0.25 parts by mole to about 0.75 parts by mole of Tb2O3, 0 parts by mole to about 0.3 parts by mole of MnO2, about 0.05 parts by mole to about 0.15 parts by mole of V2O5, about 1.0 part by mole to about 2.0 parts by mole of BaCO3, about 0.5 parts by mole to about 3.0 parts by mole of SiO2, and about 0.4 parts by mole to about 0.6 parts by mole of Al2O3 as subcomponents based on 100 parts by mole of the main component.
Dependencies are inferred from the claim text.