| abstract |
Disclosed is a dielectric ceramic having crystal particles mainly composed of barium titan ate and an intergranular phase formed between the crystal particles. This dielectric ceramic is characterized by containing 0.01-0.06 mole of magnesium in terms of MgO, 0.0007-0.03 mole of yttrium in terms of Y2O3 and 0.0002-0.03 mole of manganese in terms of MnO per 1 mole of barium constituting the barium titan ate, and 10.4-26.1 parts by mass of tantalum in terms of Ta2O5 per 100 parts by mass of the barium titan ate. The dielectric ceramic is also characterized in that the crystal particles have an average particle diameter of 0.05-0.2 [mu] m. Also disclosed is a capacitor which is composed of a laminate of a dielectric layer, which is made of such a dielectric ceramic, and a conductor layer. |