Research Article
Atomistic Simulation of Intrinsic Defects and Trivalent and Tetravalent Ion Doping in Hydroxyapatite
Table 7
Solution energies (eV) for substitution of the rare earth (M3+ = Eu, Sm, Nd, Pr, Ce, and La) ions in HAP.
| Mechanisms | Dopant | | | Eu3+ | Sm3+ | Nd3+ | Pr3+ | Ce3+ | La3+ |
| Equation (1) | | 2.67 | 2.64 | 2.59 | 2.55 | 2.80 | 2.08 | | 1.52 | 1.42 | 1.29 | 2.32 | 2.62 | 2.52 | Equation (2) | | 1.79 | 1.75 | 1.70 | 1.67 | 1.49 | 1.20 | | 1.52 | 1.42 | 1.29 | 2.32 | 2.62 | 2.52 | Equation (3) | | 4.29 | 4.25 | 4.19 | 4.15 | 3.93 | 3.56 | | 2.85 | 2.73 | 2.56 | 3.86 | 4.23 | 4.10 | Equation (4) | | 2.36 | 2.34 | 2.30 | 2.28 | 2.14 | 1.92 | | 1.50 | 1.43 | 1.33 | 2.10 | 2.32 | 2.25 | Equation (5) | | 9.12 | 9.04 | 8.93 | 8.66 | 3.88 | 9.34 | Equation (6) | | 8.51 | 8.42 | 8.32 | 8.05 | 3.27 | 8.72 | Equation (7) | | 18.29 | 18.18 | 18.05 | 17.73 | 12.00 | 18.54 | | 11.80 | 11.70 | 11.57 | 11.25 | 5.51 | 12.06 |
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