Patent ID: 6878307

Claim:
A piezoelectric ceramic composition represented by the general formula: [(Pb 1-m-n-p Sr m Ba n Cd p )(Zr x Ti 1-x ) 1-k (Bi a Mn b ) k ]O 3 +y(weight %)Bi 2 O 3 +z(weight %)F wherein F is LiF or MgF 2 and the following conditions are satisfied: 0.00≦m<0.15, 0.00≦n<0.15, 0.00<(m+n)<0.21, 0.00<p<0.04 0.50≦x≦0.56, 0.00<a≦1.00, 0.00<b≦1.00, 0.00<k<0.04 0.00≦y≦1.00 (in weight %), and 0.00≦z≦1.00 (in weight %).