Dielectric composition with high-temperature stability and stacked ceramic capacitor comprising same
AssigneeAmotech Co., Ltd.
InventorsHansae JU, Heerim KIM, Myoungsoo KIM, Sungjin HONG
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Abstract
Disclosed is a dielectric composition comprising a barium titanate-based base material major component and a minor component. The dielectric composition includes any one of oxides and carbonates of at least one of Y and Dy elements among oxides and carbonates of Mg, Si, V, Mn and Cr, Ba, Y and Dy elements. A stacked ceramic capacitor formed by sintering the dielectric composition satisfies the X7R properties specified by the EIA specification and has high permittivity.
Claims11
A dielectric composition comprising:
- a barium titanate-based base material major component;
- and
- a minor component,
- wherein the minor component includes at least one of a first minor component including at least one of oxides and carbonates of fixed-valance acceptor element including Mg;
- a second minor component including at least one selected from the group consisting of oxides, carbonates and glass of Si element;
- a third minor component including at least one of oxides of at least one element selected from the group consisting of V, Mo and W and carbonates thereof;
- a fourth minor component including at least one selected from the group consisting of oxides and carbonates of variable-valence acceptor element including at least one of Mn, Cr, Fe, Ni, Co, Cu and Zn;
- a fifth minor component including at least one selected from the group consisting of oxides and carbonates of at least one element selected from the group consisting of Ba and Ca;
- and a sixth minor component including at least one selected from the group consisting of oxides and carbonates of at least one rare-earth element including Y and Dy;
- the minor component includes the sixth minor component;
- and
- a total content of the Y and Dy elements included in the sixth minor component is from 0 part by mole to 4 parts by mole with respect to 100 parts by mole of the base material major component.
A stacked ceramic capacitor having a structure in which a dielectric layer and an internal electrode layer are alternately stacked,
- wherein the dielectric layer includes a barium titanate-based base material major component and at least one minor component;
- the minor component includes at least one of a first minor component including at least one of oxides and carbonates of fixed-valance acceptor element including Mg;
- a second minor component including at least one selected from the group consisting of oxides, carbonates and glass of Si element;
- a third minor component including at least one of oxides of at least one element selected from the group consisting of V, Mo and W and carbonates thereof;
- a fourth minor component including at least one selected from the group consisting of oxides and carbonates of variable-valence acceptor element including at least one of Mn, Cr, Fe, Ni, Co, Cu and Zn;
- a fifth minor component including at least one selected from the group consisting of oxides and carbonates of at least one element selected from the group consisting of Ba and Ca;
- and a sixth minor component including at least one selected from the group consisting of oxides and carbonates of at least one rare-earth element including Y and Dy;
- the minor component includes the sixth minor component;
- and
- a total content of the Y and Dy elements included in the sixth minor component is from 0 part by mole to 4 parts by mole with respect to 100 parts by mole of the base material major component.
Dependencies are inferred from the claim text.