fig1
Figure 1. (A) Phase diagram of PNN-PZ-PT ternary system (reproduced from Ref.8)[8]; (B) XRD patterns and SEM images of (C) the cross-section and (D) polished surface after annealing treatment for 0.555PNN-0.145PZ-0.30PT ceramics. SEM: Scanning electron microscopy; XRD: X-ray diffraction; PNN-PZ-PT: Pb(Ni1/3Nb2/3)O3-PbZrO3-PbTiO3.
