Table 3 Calculated lattice parameter “a” in Å, error with respect to experiment in %, bulk modulus B in GPa, lattice volume V in Å3.
System | a (Å) | aexp (Å) | Error (%) | B (GPa) | V (Å3) | Vexp (Å3) | |
---|---|---|---|---|---|---|---|
PBE-GGA | Cu30 | 3.53466 | 3.505 | 0.85 | 204.088 | 44.16 | 43.09 |
Cu50 | 3.57983 | 3.511 | 1.96 | 156.3555 | 45.88 | 43.28 | |
Cu70 | 3.61528 | 3.513 | 2.91 | 165.0271 | 47.25 | 43.39 | |
WC-GGA | Cu30 | 3.48829 | 3.505 | 0.48 | 222.3901 | 42.45 | 43.09 |
Cu50 | 3.51915 | 3.511 | 0.23 | 202.579 | 43.58 | 43.28 | |
Cu70 | 3.53466 | 3.513 | 0.62 | 317.6368 | 44.16 | 43.39 |