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US 2024/0404754 A1Published application
Dielectric ceramic composition and multilayer ceramic electronic device
AssigneeTaiyo Yuden Co., Ltd.
InventorsYamato SASAKI, Mika NISHIZAWA
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Abstract
A dielectric ceramic composition includes a first crystal grain that has a perovskite structure expressed by a general formula of BaTiO3, and has a core portion and a shell portion surrounding the core portion and including dysprosium, and a second crystal grain in which an elemental ratio of barium to titanium is 0.70 or less and a main component is barium titanate composite oxide. An elemental ratio of barium to titanium of the dielectric ceramic composition is 0.90 or more and 0.98 or less.
Claims11
A dielectric ceramic composition comprising:
- a first crystal grain that has a perovskite structure expressed by a general formula of BaTiO3, and has a core portion and a shell portion surrounding the core portion and including dysprosium;
- and
- a second crystal grain in which an elemental ratio of barium to titanium is 0.70 or less and a main component is barium titanate composite oxide,
- wherein an elemental ratio of barium to titanium of the dielectric ceramic composition is 0.90 or more and 0.98 or less.
1 more element
A dielectric ceramic composition comprising:
- barium titanate as a main component,
- wherein an elemental ratio of barium to titanium is 0.90 or more and 0.98 or less, and
- wherein the dielectric ceramic composition contains 0.5 mol or more and 3.0 mol or less of dysprosium per 100 mol of titanium, contains 0.05 mol or more and 0.5 mol or less of a donor element per 100 mol of titanium, contains 0.05 mol or more and 3.0 mol or less of an acceptor element per 100 mol of titanium, and contains 0.5 mol or more and 3.0 mol or less of silicon per 100 mol of titanium.
Dependencies are inferred from the claim text.