Crystal Research and Technology
Cryst. Res. Technol. 35 (2000) 615 - Abstract -

T. R. Trivedi, A. T. Oza, V. A. Patel, S.K.Arora

Department of Physics, Sardar Patel University, Gujarat, India

DC and AC Conductivity of Barium Hydrogen Phosphate (BaHPO4)

D.C. conductivity of the ferroelectric BaHPO4 is measured and is found to lie between usual conductivities of semiconductor and insulator. Its temperature dependence shows intrinsic conduction in defective crystals due to H+ ions. The a.c. conductivity calculated from the measured dielectric constant follows sigma~omega1.54, a power law. Frequency of 20 kHz resolves the resistivity peak of a.c. conduction into two Gaussians. The ln sigma vs f plots at different temperatures show an exponential dependence and existence of a focal point.

Keywords: AC and DC conductivity, BaHPO4 crystal, gel method


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