The X-ray diffraction patterns of (1x)BNT–xBT ceramics are
shown inFig. 1(a). These patterns show a pure perovskite structure
phase. A fine scanning of ceramics in the 2h ranges 45–48 is
shown in theFig. 1(b). The rhombohedral phase of pure NBT at
room temperature is characterized by a single (20 2) peak. Similar
to pure BNT, it can be seen that for x< 0.065, the ceramic has a
rhombohedral perovskite structure.