Fatigue rates in the Pb(Zn1/3Nb2/3)O-3-PbTiO3 perovskite solid solution wer
e investigated for different compositions in the rhombohedral and tetragona
l phases in a variety of directions, at various field levels. It was found
that the fatigue rates depend on both the ferroelectric phase and crystallo
graphic orientation. In the rhombohedral phase when the field is applied al
ong the [001](C) direction (where the direction is given in terms of the cu
bic prototype), excellent fatigue resistance was obtained. (C) 2000 America
n Institute of Physics. [S0021-8979(00)06321-0].