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Table 1: The values of z, for various Fe pnictides. Na-111 means NaFeAs, K-Ba122 means , and so forth.

Compound (K) Ref. Na111 1.41 15.5 [35] K-Ba122 1.37 38 [36] F-La1111 1.34 26 [37] F-Nd1111 1.37 46 [38] F-Ce1111 1.34 35 [39] F-Pr1111 1.32 47 [40] F-La1111 1.32 20 [41] Pr1111 1.32 47 [40] O-Sm1111 1.37 34 [42] V-Nd1111 1.38 51 [43] Co-La1111 1.34 14.3 [44] Fe(Se0.416Te0.584) 1.65 14 [45] Fe(Se0.493Te0.507) 1.62 14 [45] Li111 1.51 10 [46] Li111 1.68 18 [47] F-Sm1111 1.36 46 [48] F-Tb1111 1.38 44 [49] V-Nd1111 1.37 51 [43] Co-SrFeAsF 1.35 4 [50] K-Ba122 1.38 38 [36]