Research Article
Electronic, Elastic, Optical, and Thermodynamic Properties Study of Ytterbium Chalcogenides Using Density Functional Theory
Table 4
Mechanical parameters of ytterbium chalcogenides.
| Mechanical property | Compound | Reference | YbS | YbSe | YbTe |
| Bulk modulus (GPa) | 51.30 | 42.04 | 34.21 | Present study | | | | Experiment [23] |
| Young’s modulus (GPa) | 97.66 | 81.61 | 60.44 | Present study | 97.83 | 92.73 | 113.75 | Experiment [27] |
| Shear modulus (GPa) | 41.31 | 34.71 | 25.11 | Present study | 31 | 27.16 | 34.48 | Experiment [27] |
| Poisson’s ratio | 0.18 | 0.17 | 0.20 | Present study | 0.23 | 0.18 | 0.09 | Experiment [27] |
| Debye sound velocity (m/s) | 2611.18 | 2249.85 | 1926.92 | — | Debye temperature (K) | 270.62 | 226.43 | 181.60 | — |
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