| 简介 |
A dielectric ceramic constituting a ceramic sintered article, which is represented by the general formula : 100(Ba1-x-ySrxCay)m(Ti1-zZrz)O3 + aBaO + bR2O3 + cMgO + dMnO + eCuO + fV2O5 + gXuOv [where R represents a specific rare earth element such as La, Ce or Pr, and XuOv represents a group of oxides comprising Si], wherein 0 ≤ x ≤ 0.05, 0 ≤ y ≤ 0.08 (preferably 0.02 ≤ y ≤ 0.08), 0 ≤ z ≤ 0.05, 0.990 ≤ m, 100.2 ≤ (100m + a) ≤ 102, 0.05 ≤ b ≤ 0.5, 0.05 ≤ c ≤2, 0.05 ≤ d ≤ 1.3, 0.1 ≤ e ≤ 1.0, 0.02 ≤ f ≤ 0.15, and 0.2 ≤ g ≤ 2 are satisfied. The above dielectric ceramic can be used for providing a laminated ceramic capacitor which has a dielectric layer having a reduced thickness and exhibits good dielectric characteristics and temperature characteristics even when a voltage exhibiting a high electric field strength is applied thereto, is good in insulating property, the resistance to voltage and the high temperature load life, and is excellent in reliability. |
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