| 简介 |
Provided is a laminated ceramic capacitor which exhibits excellent life properties in a high-temperature load test. The laminated ceramic capacitor comprises : a laminate which comprises multiple dielectric material layers each comprising crystal particles and a grain boundary and multiple internal electrodes; and an external electrode. The laminated ceramic capacitor is characterized in that the laminate has a chemical composition which contains a perovskite-type compound containing Ba and Ti and optionally containing Ca as the main component and additionally contains a rare earth element R, Mn, Mg, V and Si, wherein the total content (100×m) (expressed in part by mole) of Ba and Ca fulfills the formula : 0.950 ≤ m < 1.000, the content (a) (expressed in part by mole) of R fulfills the formula : 0.3 ≤ a ≤ 2.5, the content (b) of Mn (expressed in part by mole) fulfills the formula : 0.05 ≤ b ≤ 0.5, the content (c) of Mg (expressed in part by mole) of fulfills the formula : 0.5 ≤ c ≤ 2.0, the content (d) of V (expressed in part by mole) fulfills the formula : 0.05 ≤ d ≤ 0.25, the content (e) of Si (expressed in part by mole) fulfills the formula : 0.5 ≤ e ≤ 3.0 and the Ca/(Ba+Ca) ratio (x) by mole fulfills the formula : 0 ≤ x ≤ 0.10 wherein the content of Ti is 100 parts by mole, and wherein the abundance ratio of the rare earth element R at a location that is located on the inside by 4 nm of the surface of the grain boundary is 20% or more. |
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