Dielectric constant, alternating-current and direct-current conductivity measurements were performed on monocrystals of the fluorite at temperatures ranging from 100 to 770K. The dielectric response revealed both dipolar and charge-carrier contributions. The conductivity varied over more than 11 orders of magnitude, and indicated the existence of 2 thermally activated processes; with activation energies of 1.71 and 1.17eV for the higher and lower temperature regions, respectively. The conduction mechanisms were explained in terms of the various conduction pathways for F-vacancy motion in the crystal.

Y3KF10 Diffusion in Halides ZnF4

A.P.Ayala, M.A.S.Oliveira, J.Y.Gesland, R.L.Moreira: Journal of Physics - Condensed Matter, 1998, 10[23], 5161-70

Dielectric constant, alternating-current and direct-current conductivity measurements were performed on monocrystals of the fluorite at temperatures ranging from 100 to 770K. The dielectric response revealed both dipolar and charge-carrier contributions. The conductivity varied over more than 11 orders of magnitude, and indicated the existence of 2 thermally activated processes; with activation energies of 1.71 and 1.17eV for the higher and lower temperature regions, respectively. The conduction mechanisms were explained in terms of the various conduction pathways for F-vacancy motion in the crystal.

A.P.Ayala, M.A.S.Oliveira, J.Y.Gesland, R.L.Moreira: Journal of Physics - Condensed Matter, 1998, 10[23], 5161-70