PIEZOELECTRIC PROPERTIES OF PB[ZR0.45TI0.5-XLUX(MN1 3SB2/3)(0.05)]O-3CERAMICS/

The piezoelectric properties of Pb[Zr0.45Ti0.5-xLux(Mn1/3Sb2/3)(0.05)] O-3 ceramics, with 0 less than or equal to x 0.03, have been investiga ted. The partial substitution of Ti4+ with Lu3+ permitted improvement of the electromechanical coupling factor (k(p)), the dielectric consta nt (epsilon(33)(T)), and the piezoelectric constant (d(33)), while the dielectric loss (tan delta) increased and the mechanical quality fact or (Q(m)) decreased with an increase of x, A pertinent piezoelectric m aterial for actuator applications was Pb[Zr0.45Ti0.48Lu0.02(Mn1/3Sb2/3 )(0.05)]O-3, and the piezoelectric properties were k(p) = (58.5 +/- 0. 5)%, epsilon(33)(T) = 32 +/- 25, d(33) = (373 +/- 6) x 10(-12) C/N, Q( m) = 714 +/- 22, and tan delta = (0.98 +/- 0.03)%.