Patent ID: 7276462

Claim:
A dielectric composition comprising, as a primary component, a composition represented by the following formula (1): Pb x Bi p (Mg y/3 Nb 2/3 ) a Ti b-z M z Zr c O 3 (1) (wherein x, p, and y satisfy the following relations: 0.85≦x≦1.03, 0.02≦p≦0.1, and 0.8≦y≦1.0; a, b, and c are decimal numbers falling within a region formed by connecting the following five points (0.550, 0.425, 0.025), (0.550, 0.150, 0.300), (0.100, 0.150, 0.750), (0.100, 0.525, 0.375), and (0.375, 0.425, 0.200) in a triangular coordinate system of (a, b, c) having the following three vertexes (1, 0, 0), (0, 1, 0), and (0, 0, 1); z satisfies the following relation: 0.02≦z≦0.10; and M is at least one element selected from among Nb, Ta, Mo, and W, which dielectric composition contains Ni in an amount of 0.05 to 2.0 wt. % as reduced to NiO).