Piezoelectric/electrostrictive device

摘要

A piezoelectric/electrostrictive device (10) comprises a piezoelectric/electrostrictive layer (24) and at least a pair of electrodes (26a, 26b) formed on the piezoelectric/electrostrictive layer (24), wherein the piezoelectric/electrostrictive layer (24) is composed of a material containing Mn in an amount corresponding to 0.1 to 0.5 % by weight as converted into an amount of MnO2, in PZT (lead zirconate titanate), or a material containing Mn in an amount corresponding to 0.1 to 0.5 % by weight as converted into an amount of MnO2, in a perovskite type piezoelectric/electrostrictive material based on Pb(Mg1/3Nb2/3)O3-PbZrO3-PbTiO3 which contains Pb and in which a part of Pb is substituted with Sr. <IMAGE>