Fig. 6. Bi L_III-edge k³ weighted experimental EXAFS data and the corresponding Artemis best fit for Bi₂Te₃ thin film and bulk samples; (a) and (b) respectively. (c) Schematic crystal structure of Bi₂Te₃.⁵⁴ Fitting parameters: k-range = 2.2–10, dk = 0, k-window = Hanning, k-weight = 1, 2, 3, R-range = 2.2–4, dR = 0, R-window = Hanning, fitting space = r, background function = yes.