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Calculated Mg-Mg separations and activation energies using classical pair-potential method for the magnesium ion migration between two adjacent Mg sites (refer to Fig. 3).
| Migration path | Mg-Mg separation/Å | Activation energy/eV |
|---|---|---|
| A | 3.1069 | 0.88 |
| B | 3.5973 | 0.74 |
