A. Megriche et M. Troccaz, EFFECTS OF EXCESS PBO ADDITION ON THE PROPERTIES OF FERROELECTRIC DOPED PZT CERAMICS, Materials research bulletin, 33(4), 1998, pp. 569-574
The influence of a PbO excess in the PZT composition Pb0.92 + xSr0.08
(Zr0.515Ti0.455Nb0.02Mn0.01)O3 + x (0 < x < 0.12) was investigated. A
sintering method was chosen for the ceramics manufacture. Weight-loss
experiments were performed to compare the final PbO content values to
the theoretical x, and a nearly stoichiometric area was observed for 0
.01 < x < 0.08, corresponding to optimal piezoelectric coefficients. S
ubstitution of Mn ion in a +2 or +4 valency state was studied. Measure
ments of vibration velocities with a view to ultrasonic motors applica
tion were carried out. (C) 1998 Elsevier Science Ltd.