Figure 2

Rietveld refined X-ray powder diffraction patterns of (1 − x)KNN-xBST for (a) x = 0 using Amm2 model (b) x = 0.025 and (c) x = 0.10 using Amm2 + P4mm model (d) x = 0.20 using P4mm+\(Pm\overline{3 }m\) model and (e) x = 0.30 using \(Pm\overline{3 }m\) model. The inset shows a magnified view of the fitted {200}pc and {222}pc reflections.