Patent ID: 6522521
Filing Date: 2003-02-18
Classification: C04B,H01G

Abstract:
A reduction-resistant dielectric ceramic compact comprising:a solid solution comprising barium titanate as a primary component and an auxiliary sintering agent which has an x-ray diffraction crystalline axis ratio c/a in a temperature range of âˆ’25Â° C. or above of 1.000&lE;c/a&lE;1.003 and a maximum peak for temperature dependence of a dielectric constant measured at an electric strength of 2 Vrms/mm or less and at an AC frequency of 1 kHz at a temperature of below âˆ’25Â° C., wherein the primary component is represented by the formula ABO3+aR+bM, in which ABO3 is a barium titanate-based perovskite compound having A-site and B-site elements such that 1.000R is a compound containing at least one element selected from the group consisting of La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu, M is a compound containing at least one element selected from the group consisting of Mn, Ni, Mg, Fe, Al, Cr and Zn, and a and b are in moles such that 0.005&lE;a&lE;0.12, and 0.005&lE;b&lE;0.12.