Figure 4
From: Suppression of abnormal grain growth in K0.5Na0.5NbO3: phase transitions and compatibility
Temperature-dependent lattice constants determination, refinement and compatibility results. (a) Left: temperature-dependent development of the lattice constants in KNN and the best performing KNNex sample respectively. Right: fitting results for the phase transition region for the tetragonal to cubic phase transition. (b) Rietveld refinement results for the KNNex sample shown in (a) and enlarged depictions of the fit for the (100) and (110) orientations. (c) Thermal hysteresis and phase compatibility (λ2) correlation for KNN and KNNex.
