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Table 1 Values of conductivity and activation energies in different materials

From: Ionic Transport Properties in Nanocrystalline Ce0.8A0.2O2-δ (with A = Eu, Gd, Dy, and Ho) Materials

Materials Eσ(eV) σgi(S cm−1) (at 550°C) σgb(S cm−1) (at 550°C) σ (S cm−1) (550°C)
GDC0.2 1.07 5.8 × 10−4 7.3 × 10−4 1.8 × 10−4
EuDC0.2 0.91 (480–550°C) 1.13 (250–470°C) 3.45 × 10−4 4.4 × 10−4 1.39 × 10−4
DyDC0.2 1.16    1.36 × 10−4
HDC0.2 1.26    1.4 × 10−4
  1. Eσ is the total activation energy, whereas σ, σgi, and σgb are the total conductivity, grain interior conductivity and grain boundary conductivity, respectively