DC and AC conductivity of barium hydrogen phosphate (BaHPO4)

D.C. conductivity of the ferroelectric BaHFO4 is measured acid is found to lie between usual conductivities of semiconductor and insulator. its temper ature dependence shows intrinsic conduction in defective crystals due to H ions. The a.c. conductivity calculated from the measured dielectric consta nt follows sigma similar to omega(154), a power law. Frequency of 20 kHz re solves the resistivity peak of a.c. conduction into two Gaussians. The ln s igma vs f plots at different temperatures show an exponential dependence an d existence of a focal point.