Fig. 4
From: Room-temperature superionic-phase nanocrystals synthesized with a twinned lattice
Sub-stoichiometry-dependent crystallographic structures of the NCs. a Experimental PXRD patterns of Cu2−xS NCs for four levels of sub-stoichiometry. Reference patterns are also shown for low chalcocite (JCPDS # 33–0490), djurleite (JCPDS # 23–0959) and high chalcocite (JCPDS # 26–1116) by stick patterns. b Simulated PXRD patterns of Cu2−xS NCs in a 1:1 mixture of djurleite: low chalcocite phase and a high chalcocite phase with key peaks assigned to specific Miller planes. For the input parameters for each simulated pattern, refer to Supplementary Tables 1–3. Reference patterns are also shown for djurleite (black sticks) and high chalcocite (green sticks). c NC domain size determined from Debye-Scherrer broadening (see Supplementary Table 4) of the 2θ ~37° reflection of the experimental PXRD pattern
