Piezoelectric Properties of Pb[Zr0.45Ti0.5‐xLux(Mn1/3Sb2/3)0.05]O3 Ceramics

The piezoelectric properties of Pb[Zr 0.45 Ti 0.5‐ x Lu x (Mn 1/3 ‐Sb 2/3 ) 0.05 ]O 3 ceramics, with 0 lessthan equal to x lessthan equal to 0.03, have been investigated. The partial substitution of Ti 4+ with Lu 3+ permitted improvement of the electromechanical coupling factor ( k p ), the dielectric constant (epsilon T 33 ), and the piezoelectric constant ( d 33 ), while the dielectric loss (tan delta) increased and the mechanical quality factor ( Q m ) decreased with an increase of x . A pertinent piezoelectric material for actuator applications was Pb[Zr 0.45 Ti 0.48 Lu 0.02 (Mn 1/3 Sb 2/3 ) 0.05 ]O 3 , and the piezoelectric properties were k p = (58.5 ± 0.5)%, epsilon T 33 = 32 ± 25, d 33 = (373 ± 6) 10 ‐12 C/N, Q m = 714 ± 22, and tan delta = (0.98 ± 0.03)%.