Figure 3
Comparison of the observed (crosses) and calculated (solid line) powder diffraction patterns of high-temperature AlPO4 tridymite (a) at 473 K and (b) at 463 K. The arrows in (b) point to weak satellite reflections. The difference patterns are shown below. The short bars indicate the positions of the reflections of corundum (first row) and tridymite (second row). |