Patent ID: 7911764
Filing Date: 2011-03-22
Classification: C04B,H01B,H01G

Abstract:
1. A dielectric ceramic comprising a perovskite compound represented by the general formula ABO 3 in which A is Ba or Ba in combination with at least one of Ca and Sr, and B is Ti or Ti in combination with at least one of Zr and Hf as a main ingredient, a rare earth element R which is at least one member selected from the group consisting of La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu and Y, and Ni, and having crystal grains and crystal grain boundaries, wherein said Ni is uniformly or substantially uniformly solid-solved in the crystal grains, and an average solid-solution region of said rare earth element R in a cross section of said crystal grains is 10% or less.