Effect of uniaxial stress on the large-signal electromechanical properties of electrostrictive and piezoelectric lead magnesium niobate lead titanate ceramics

摘要

The electromechanical performance characteristics of electrostrictive 0.9 Pb(Mg_(1/3)Nb_(2/3))O_(3)-0.1 PbTiO_(3) and piezoelectric 0.7 Pb(Mg_(1/3)Nb_(2/3))O_(3)-0.3 PbTiO_(3) ceramics have been investigated under uniaxial stress (σ). The results demonstrate that the large-signal electromechanical properties of electrostrictive ceramics are decreased with increasing σ, whereas those of the piezoelectric are increased but accompanied by significantly increased hysteretic losses.