Fig. 1: The crystal structure and some of the analysis results of Cu2-xS.
From: Evidence of tuned anharmonicity in the thermoelectric material Cu2-xS
a Crystal structure of Cu2-xS, where the Cu1 and Cu2 sites are not fully occupied, as illustrated by white portions in the structure. The compositional and temperature dependence of b lattice constant, c the ratio of NTot(Cu1) and NTot(Cu2), and d the volume of the [Cu2]4-tetrahedra. Here, NTot(Cu1) and NTot(Cu2) imply the total number of Cu atoms per chemical formula at the 8c (Cu1) and the 32 f (Cu2) site, respectively (see text). The error bars represent standard deviations obtained from Rietveld refinement.
