[摘要]:The dielectric response of (1-x)Pb(Zn1/3Nb2/3)O-3-xPbTiO(3) (PZN-x% PT, 4.5 <= x <= 12) single crystals is reported for ac field amplitudes up to similar to 2 kV/cm at 1 kHz. The Rayleigh law is used to study the dielectric nonlinear response. It is found