| 摘要 |
<p>A dielectric ceramic that contains, as its main constituent, main-phase grains including a perovskite-type compound containing Ba, Ca, and Ti; first heterogeneous-phase grains containing Ca, a rare-earth element, and Si; and second heterogeneous-phase grains containing no Ca and containing the rare-earth element and Si. The second heterogeneous-phase grains are present in the dielectric ceramic in a ratio of 0.05 or less (including 0) of the number of the second heterogeneous-phase grains to the total of the first heterogeneous-phase grains and the second heterogeneous-phase grains. In the first heterogeneous-phase grains, the content of Ca is preferably 8% or more in terms of molar ratio with respect to the total content of Ca, the rare-earth element, and Si.</p> |
