Patent ID: 8231803

Claim:
A piezoelectric ceramic comprising a three-component solid solution as a major component, the three-component solid solution being represented by the following general formula (1): x(Bi 1/2 Na 1/2 )TiO 3 −y(Bi 1/2 Li 1/2 )TiO 3 −z(Bi 1/2 K 1/2 )TiO 3 (1) wherein x, y and z satisfy the following formulas (2), (3), (4) and (5) 0.80≦x≦0.96 (2) 0.02≦y≦0.08 (3) 0.01≦z≦0.15 (4) x+y+z =1 (5) comprising manganese element dispersed in the major component as an additive, wherein the manganese element content is no greater than 0.93 mass % in terms of MnO with respect to the major component.