Figure 2.

Reconstructed precession images of the hk0 plane of (a) a single crystal of Al-stabilized LLZO directly after synthesis with some selected Bragg reflections indexed and (b) a single crystal after hydro­thermal alteration at 150 °C for 28 d. Note the presence of sharp superstructure reflections, which obey Ia d symmetry. In part (b), the yellow encircled Bragg reflections are the same as in part (a), while the blue encircled reflections in the rectangular box correspond (from left to right) to the 0, 0, 0,… Bragg reflections.