Back to results
US 2024/0409470 A1Published application
Dielectric ceramic composition and multilayer ceramic electronic device
AssigneeTaiyo Yuden Co., Ltd.
InventorsKazuki MISAWA, Keiichi HATANO
Life of this patent
Estimating the term…
Abstract
A dielectric ceramic composition includes a first crystal grain that has a perovskite structure expressed by a general formula of BaCaTiO3, and has a core portion and a shell portion surrounding the core portion and including a rare earth element and manganese, and a second crystal grain in which an elemental ratio of total of barium and calcium to titanium is 0.70 or less and a main component is barium calcium titanate.
Claims20
A dielectric ceramic composition comprising:
- a first crystal grain that has a perovskite structure expressed by a general formula of BaCaTiO3, and has a core portion and a shell portion surrounding the core portion and including a rare earth element and manganese;
- and
- a second crystal grain in which an elemental ratio of total of barium and calcium to titanium is 0.70 or less and a main component is barium calcium titanate.
A dielectric ceramic composition comprising:
- a first crystal grain that has a perovskite structure expressed by a general formula of BaCaTiO3, and has a core portion and a shell portion surrounding the core portion and including a rare earth element and manganese;
- and
- a second crystal grain which is barium titanate composite oxide in which an elemental ratio of total of barium and calcium to the barium titanate composite oxide is smaller than an elemental ratio of titanium to the barium titanate composite oxide,
- wherein the second crystal grain includes manganese and has an elemental ratio of manganese to titanium of 0.02 or more and 0.10 or less.
1 more element
Dependencies are inferred from the claim text.