Table 1 Fitting parameters and PT-modes describing two-component reconstructed PAL spectra in g-Gax[(As/Sb)0.40Se0.60]100-x
From: Effect of Rare-Earth Doping on Free-Volume Nanostructure of Ga-Codoped Glassy (As/Sb)2Se3
ChG sample | Fitting parameters | Positron trapping modes | |||||||
|---|---|---|---|---|---|---|---|---|---|
τ 1 | τ 2 | I 2 | τ av. | τ b | κ d | τ 2 -τ b | τ 2 /τ b | η d | |
ns | ns | a.u. | ns | ns | ns−1 | Ns | – | – | |
g-As40Se60 | 0.210 | 0.360 | 0.462 | 0.279 | 0.260 | 0.92 | 0.10 | 1.39 | 0.19 |
g-Ga2(As0.40Se0.60)98 | 0.223 | 0.382 | 0.401 | 0.287 | 0.267 | 0.75 | 0.11 | 1.43 | 0.17 |
g-Ga2(As0.28Sb0.12Se0.60)98 | 0.210 | 0.363 | 0.422 | 0.274 | 0.255 | 0.85 | 0.11 | 1.42 | 0.18 |
Pr3+-doped (500 wppm) g-Ga2(As0.28Sb0.12Se0.60)98 | 0.218 | 0.374 | 0.376 | 0.276 | 0.258 | 0.72 | 0.12 | 1.45 | 0.16 |