The effect of hydrostatic pressures upon the conductivities of pure or substituted (Cd, Na, Tb, U) PbF2, and of pure or Ca-substituted LaF3, was studied at temperatures ranging from 300 to 700K and pressures of up to 0.25GPa (-PbF2) or 0.8GPa (LaF3). The activation volumes for defect formation and migration, impurity defect segregation and dissociation were deduced from the effect of pressure upon the conductivity.

I.V.Murin, O.V.Glumov, W.Gunsser. M.Karus: Radiation Effects and Defects in Solids, 1995, 137[1-4], 251-4