Dielectric ceramic composition and laminated ceramic capacitor

Abstract

Provided is a dielectric ceramic composition suitably used for forming dielectric ceramic layers which constitute a laminated ceramic capacitor obtained by firing in a reducing atmosphere. Even when the dielectric ceramic composition is formed into thin dielectric ceramic layers, a highly reliable laminated ceramic capacitor having a small temperature coefficient of capacitance, a long lifetime under high temperature and high pressure conditions, and a small change in electrostatic capacitance with time under a DC voltage application can be realized. The dielectric ceramic composition contains a primary component, an additive component, and an auxiliary sintering agent, wherein the primary component and the additive component are represented by the formula 100BaTiO3+a{(1−b)R+bV}+cM, and 1.25≦a≦8.0, 0<b≦0.2, 1.0<c≦6.0, and a/c>1.1 are satisfied. R is a compound containing at least one element selected from the group consisting of La, Ce, Pr, Nd, Sm, Eu, Gd, Th, Dy, Ho, Er, Tm, Yb and Lu; V is a compound containing vanadium; and M is a compound containing at least one element selected from the group consisting of Mn, Ni, Mg, Fe and Zn.

Dependencies are inferred from the claim text.