Patent ID: 8456066

Claim:
A piezoelectric/electrostrictive element provided with a piezoelectric/electrostrictive layer and a pair of electrodes having the piezoelectric/electrostrictive layer therebetween; wherein the piezoelectric/electrostrictive layer comprises a piezoelectric/electrostrictive ceramic composition comprising a complex perovskite oxide containing Pb, Sb, Nb, Mn, Ti, and Zr as main components, wherein an atomicity ratio of the atoms satisfies the following formulae: 0.99≦Pb/(Sb+Nb+Mn+Ti+Zr)≦1.05; 0.95≦Ti/Zr≦1.10; and 0.75≦Sb/Nb≦1.15; and wherein Ag is contained in the piezoelectric/electrostrictive layer.