The conductivities of pure and doped single crystals were measured between room temperature and 900C (table 186). The results were in accordance with the presence of anti-Frenkel disorder.

W.Bollmann, P.Görlich, W.Hauk, H.Mothes: Physica Status Solidi A, 1970, 2[1], 157-70

Table 186

Activation Energies for Ionic Conduction

in Pure and Doped CaF2 Crystals