摘要:
A dielectric ceramic contains a barium titanate compound oxide as a main component; at least one rare earth element R selected from Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu; Mg; and Ni, such that a crystalline compound oxide containing the rare earth element R, Ni, and Ti as main components is present. Dielectric ceramic layers are made of the dielectric ceramic. Accordingly, even when a higher electric field is continuously applied under a high-temperature atmosphere for a long time, high reliability can be ensured.
摘要:
Provided is a dielectric ceramic which exhibits desired high temperature load resistance characteristics even under a high electric field strength on the order of 15 kV/mm. The dielectric ceramic contains, as its main constituent, a perovskite compound represented by the general formula (Ba1-h-i-mCahSriGdm)k(Ti1-y-j-n-o-pZryHfjMgnZnoMnp)O3, 0≦h≦0.03, 0≦i≦0.03; 0.042≦m≦0.074; 0.94≦k≦1.075; 0≦(y+j)≦0.05; 0.015≦n≦0.07; 0≦o≦0.04; 0≦p≦0.05; and 1.0
摘要:
A laminated ceramic capacitor which has a dielectric ceramic with a high dielectric constant and has excellent reliability against changes in temperature and mechanical shocks, even when dielectric ceramic layers are reduced in thickness employs a dielectric ceramic containing (Ba1-xCax)yTiO3 (where 0.045≦x≦0.15 and 0.98≦y≦1.05) as its main constituent and containing Re2O3 (where Re is at least one of Gd, Dy, Ho, Yb, and Y), MgO, MnO, V2O5, and SiO2 as accessory constituents, which is represented by the general formula: 100(Ba1-xCax)yTiO3+aRe2O3+bMgO+cMnO+dV2O5+eSiO2, and satisfies each of the following conditions: 0.65≦a≦1.5; 0.98≦y≦1.05; 0.15≦b≦2.0; 0.4≦c≦1.5; 0.02≦d≦0.25; and 0.2≦e≦3.0.
摘要:
A dielectric ceramic contains a barium titanate compound oxide as a main component; at least one rare earth element R selected from Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu; Mg; and Ni, such that a crystalline compound oxide containing the rare earth element R, Ni, and Ti as main components is present. Dielectric ceramic layers are made of the dielectric ceramic. Accordingly, even when a higher electric field is continuously applied under a high-temperature atmosphere for a long time, high reliability can be ensured.