Table 1 Oxygen self-diffusion parameters for MgO global fit as a function of pressure and temperature (from Ita and Cohen14)
From: Periclase deforms more slowly than bridgmanite under mantle conditions
Parameter | Symbol | Value |
|---|---|---|
Attempt frequency | νa | 5.4 THz |
Activation entropy at P = 0 | S0 | 4 kB |
S0 pressure derivative | S’0 | 0.02 kB GPa−1 |
Activation energy | E0 | 0.4 × 10−19 J |
Activation volume at P = 0 | V0 | 16.7 Å3 |
V0 pressure derivative | V’0 | −0.038 Å3 GPa−1 |
