Ac conductivity and ultrasonic studies in $KHCO_3$ compound

Özet

The total conductivity of KHCO3 compound is studied in the frequency range 50Hz–1MHz and in the temperature range 300–370K. The conductivity frequency dependence relation is divided into three regions: one at low frequency (dcconductivity), while the others appear at a moderate and relatively higher frequency range. In general, the conductivity frequency dependence conductivity obeys a double power law relation, $\sigma_{tot}= \sigma_{dc} +A\omega^p +B\omega^q$ . The powers p and q have been found to be in the range 0 to 1 and 1 to 2,respectively. The attenuation coeffcient $\beta$ of KHCO3 compound was studied over a temperature range from room temperature up to 370 K. The general behavior showed two essential activated regions.The activation energies are estimated and discussed.