Abstract
Lead-free (1-f)[0.73Bi0.5Na0.5TiO3–0.27SrTiO3]–f[0.75Bi0.5Na0.5TiO3–0.25SrTiO3] composites were synthesized using a conventional solid-state reaction method. The f = 0.5 composites exhibited a giant unipolar strain of 0.176 % under an ultralow driving field of 2 kV/mm, corresponding to a high normalized strain of 880 pm/V. This value is comparable with that of other macro ferroelectric/relaxor composite materials under higher electric fields and even higher than those for commercial lead-based piezoceramic materials. We believe that these bismuth sodium titanate-based composites are extremely competitive in the practical applications of actuators at low electric fields.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
