presents the thermal evolution, from XRPD, of the scattering intensity for two $2 \theta$ intervals, corresponding to $2 \theta=24^{\circ}-26^{\circ}(111;-111)$ monoclinic primitive reflections and to $2 \theta=92^{\circ}-96^{\circ}$ (see below, (642) cubic Fm $\overline{3} m$ reflection).
presents the thermal evolution, from XRPD, of the scattering intensity for two 2 \theta intervals, corresponding to 2 \theta=24^{\circ}-26^{\circ}(111;-111) monoclinic primitive reflections and to 2 \theta=92^{\circ}-96^{\circ} (see below, (642) cubic Fm \overline{3} m reflection).