Table 4. The calculated mechanical parameters for KMgX3(X = O, S and Se) compounds.
| Compound | KMgO3 | KMgS3 | KMgSe3 |
|---|---|---|---|
| G V (GPA) | 42.04 | 9.12 | 33.26 |
| G R (GPA) | 30.22 | 2.44 | 32.79 |
| G H (GPA) | 36.13 | 5.79 | 33.03 |
| B o | 87.14 | 22.66 | 35.66 |
| Y | 108.6 | 24.14 | 76.12 |
| B/G | 2.41 | 3.92 | 1.08 |
| C′′ Cauchy's pressure | 17.07 | 7.45 | −19.78 |
| λ Lame's first parameter | 59.11 | 16.58 | 13.48 |
| μ shear modulus | 42.04 | 9.13 | 33.26 |
| ν Poisson's ratio | 0.29 | 0.32 | 0.14 |
| ζ kleinman parameter | 0.41 | 0.37 | 0.43 |
| A anisotropic ratio | 0.30 | 0.07 | 1.28 |
| C′ shear constant | 72.45 | 20.51 | 28.53 |