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

Electrical and Dielectric Investigations of the Conduction Processes in Y3KF10 Crystals. A.P.Ayala, M.A.S.Oliveira, J.Y.Gesland, R.L.Moreira: Journal of Physics - Condensed Matter, 1998, 10[23], 5161-70