Figure 5
The revised phase diagram for KNN produced as a result of this study. The grey shaded region shows the assignments of this paper from x = 0.24 to x = 0.36 (with our proposed space groups in red), superimposed on the 1976 phase diagram of Ahtee and Glazer, denoted in blue. The region enclosed by the dotted red lines shows the width of the two-phase monoclinic–tetragonal region. |