Fig xA The strain asymmetry of PLZT from

Aging of Pb0.91La0.09(Zr0.70Ti0.30)0.9775O3 PLZT (9/70/30) and Pb0.91La0.09(Zr0.65Ti0.35)0.9775O3 PLZT (9/65/35) resulted in the carrageenan change of dielectric and induced strain behavior. After aged, PLZT (9/70/30) showed pinching in polarization hysteresis loop (P–E) and disappeared remnant strain of electric field induced-strain (s–E loop), due to defect dipoles of 180 domains in rhombohedral phase but PLZT (9/65/35) showed decreased both polarization and strain.