Fig. 7. (Color online) (a) Schematic of the salt flux crystal growth. (b) SEM image of a Ba
3Zr
2S
7 crystal. (c) XRD of the crystal and the ground powder. The 00
l reflections and other reflections are indicated with cyan and black bars. (d) STEM image of a Ba
3Zr
2S
7 crystal viewed along
a-axis, the inset is the corresponding SAED pattern. Adapted with permission from Ref. [
70]. Copyright 2018 American Chemical Society.